Be sure to report any Grakn boot up issues!


#19

Hi @marco,

While i install new version, in the meantime just wanted to know your views on below.

What if an Ubuntu server already has a redit server(standalone one, NOT part of Grakn) installed and running on port 6379, and then we try to install Grakn over it. I believe since Grakn also tries to run redit server on port 6379 it will lead to boot up issues! I think this is what happening in my case. We already have a Redit server running for some important and critical functions in Prod on port 6379. Now, when we try to run Grakn, it leads to bootup problem and there is a message that gets recorded in logs/grakn-queue.log file:

37620:M 24 Sep 08:02:34.365 # Creating Server TCP listening socket 127.0.0.1:6379: bind: Address already in use

Can you please help.


#20

Hi @omshanti,

the new version of Grakn does not use Redis anymore,
the queue system is now completely embedded in the Grakn process
so you should not have any of the problems you’ve mentioned.

Let us know if your problems are solved


#21

The new version worked! Excellent! Thanks!


#22

What about boot ‘down’ issues? On 1.4.0, grakn server stop sometimes never succeeds in stopping engine (some ASCII art removed):

12:01 $ grakn server stop
...

                                     THE KNOWLEDGE GRAPH



Stopping Engine.....................................................................................................................................................

This just goes forever, in the logs I see this:

2018-09-24 12:02:00,402 [main] INFO  ai.grakn.engine.GraknConfig - Project directory in use: 
/Users/nathanjohnson/src/grakn-core-1.4.0
2018-09-24 12:02:00,406 [main] INFO  ai.grakn.engine.GraknConfig - Configuration file in use: 
/Users/nathanjohnson/src/grakn-core-1.4.0/conf/grakn.properties
2018-09-24 12:02:00,408 [main] INFO  ai.grakn.engine.GraknConfig - Project directory in use: 
/Users/nathanjohnson/src/grakn-core-1.4.0
2018-09-24 12:02:00,408 [main] INFO  ai.grakn.engine.GraknConfig - Configuration file in use: 
/Users/nathanjohnson/src/grakn-core-1.4.0/conf/grakn.properties

I had to kill the ai.grakn.engine.bootup.GraknCassandra and ai.grakn.engine.bootup.Grakn processes to take the server down. A restart and stop was then successful.


#23

We are aware of such issues!
In general the cause of this is that Grakn doesn’t like to stop when it has transactions still open. Transactions could be open via any number of mechanisms, including the Graql console, using client Java/NodeJS/Python and additionally using Workbase. Try closing any transactions you can, exit any Graql consoles, close Workbase and then asking Grakn to stop!


#24

Hi,
I’m trying to start Grakn server using ./grakn server start cmd, but it is starting only Grakn Storage and Grakn Queue. For Grakn Engine it is printing only . . . . . . After few min when i check for ./grakn server status status it is showing all the 3 (Storage, Queue and Engine) running.

Other Details:
Grakn version: 1.3
operating system: Red Hat Enterprise Linux 7 (64 bit)
Download: Downloaded from Grakn site ([https://grakn.ai/download])
o/p of “ls -la /tmp/*.pid” :
-rw-------. 1 admin wheel 5 Feb 15 14:30 /tmp/grakn-engine.pid
-rw-------. 1 admin wheel 6 Feb 15 14:29 /tmp/grakn-queue.pid
-rw-------. 1 admin wheel 5 Feb 15 14:29 /tmp/grakn-storage.pid
o/p of “ps -ef | grep redis-server”:
admin 20689 1 0 14:29 ? 00:00:00 services/redis/redis-server-linux 127.0.0.1:6379
admin 21251 21113 0 14:47 pts/1 00:00:00 grep --color=auto redis-server

getting below error in grakn.log file:

2019-02-15 10:16:04,739 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:16:04,747 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:16:04,811 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:16:04,811 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:18:33,597 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:18:33,603 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:18:33,653 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:18:33,654 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:18:33,656 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:18:33,656 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:18:34,215 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:18:34,215 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:19:34,395 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:19:34,405 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:19:46,969 [main] INFO a.g.engine.task.BackgroundTaskRunner - Registering a new background task.
2019-02-15 10:19:47,037 [main] INFO ai.grakn.engine.Server -

2019-02-15 10:19:47,038 [main] INFO ai.grakn.engine.Server -

  ________  _____     _______  __    __  __    __      _______  _______  _____     _______
 |   __   ||   _  \  |   _   ||  |  /  /|  \  |  |    |   _   ||   _   ||   _  \  |   ____|
 |  |  |__||  | |  | |  | |  ||  | /  / |   \ |  |    |  | |__||  | |  ||  | |  | |  |
 |  | ____ |  |_| /  |  |_|  ||  |/  /  |    \|  |    |  |     |  | |  ||  |_| /  |  |____
 |  ||_   ||   _  \  |   _   ||   _  \  |   _    |    |  |  __ |  | |  ||   _  \  |   ____|
 |  |__|  ||  | \  \ |  | |  ||  | \  \ |  | \   |    |  |_|  ||  |_|  ||  | \  \ |  |____
 |________||__|  \__\|__| |__||__|  \__\|__|  \__|    |_______||_______||__|  \__\|_______|

                                     THE KNOWLEDGE GRAPH

====================================================================================================
2019-02-15 10:19:47,038 [main] INFO ai.grakn.engine.Server -

2019-02-15 10:19:47,043 [main] INFO ai.grakn.engine.Server - EngineID{value=blrrhl7.ad.infosys.com-a8a887e3-913f-4fc8-922d-4b65ac9300a8} is checking the system schema
2019-02-15 10:20:20,788 [main] INFO ai.grakn.engine.KeyspaceStore - Loading schema
2019-02-15 10:20:23,100 [main] INFO ai.grakn.engine.KeyspaceStore - Loaded system schema to system keyspace. Took: 36.06 s
2019-02-15 10:20:35,918 [main] INFO ai.grakn.engine.Server - Grakn started in 48.88 s
2019-02-15 10:24:04,032 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:24:04,037 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:24:04,082 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-dist-1.3.0
2019-02-15 10:24:04,082 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-dist-1.3.0/conf/grakn.properties
2019-02-15 10:49:46,977 [pool-2-thread-1] ERROR a.g.engine.task.BackgroundTaskRunner - An exception has occurred during the execution of a background task [ai.grakn.engine.task.postprocessing.PostProcessingTask@58e1d9d]. Skipping…
java.lang.NullPointerException: null
at org.janusgraph.graphdb.tinkerpop.JanusGraphBlueprintsGraph.startNewTx(JanusGraphBlueprintsGraph.java:80)
at org.janusgraph.graphdb.tinkerpop.JanusGraphBlueprintsGraph.access$000(JanusGraphBlueprintsGraph.java:47)
at org.janusgraph.graphdb.tinkerpop.JanusGraphBlueprintsGraph$GraphTransaction.doOpen(JanusGraphBlueprintsGraph.java:267)
at org.apache.tinkerpop.gremlin.structure.util.AbstractTransaction.open(AbstractTransaction.java:95)
at ai.grakn.kb.internal.GraknTxJanus.openTransaction(GraknTxJanus.java:62)
at ai.grakn.factory.TxFactoryAbstract$GraphWithTx.openTx(TxFactoryAbstract.java:105)
at ai.grakn.factory.TxFactoryAbstract.open(TxFactoryAbstract.java:66)
at ai.grakn.factory.EmbeddedGraknSession.transaction(EmbeddedGraknSession.java:133)
at ai.grakn.keyspace.KeyspaceStoreImpl.keyspaces(KeyspaceStoreImpl.java:143)
at ai.grakn.engine.task.postprocessing.PostProcessingTask.run(PostProcessingTask.java:70)
at ai.grakn.engine.task.BackgroundTaskRunner.lambda$register$0(BackgroundTaskRunner.java:65)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2019-02-15 10:50:17,493 [qtp1023745907-70] ERROR ai.grakn.engine.ServerHTTP - REST error
org.janusgraph.core.JanusGraphException: Could not call index
at org.janusgraph.graphdb.util.SubqueryIterator.(SubqueryIterator.java:71)
at org.janusgraph.graphdb.transaction.StandardJanusGraphTx$6.execute(StandardJanusGraphTx.java:1281)
at org.janusgraph.graphdb.transaction.StandardJanusGraphTx$6.execute(StandardJanusGraphTx.java:1150)
at org.janusgraph.graphdb.query.QueryProcessor$LimitAdjustingIterator.getNewIterator(QueryProcessor.java:209)
at org.janusgraph.graphdb.query.LimitAdjustingIterator.hasNext(LimitAdjustingIterator.java:68)
at org.janusgraph.graphdb.query.ResultSetIterator.nextInternal(ResultSetIterator.java:54)
at org.janusgraph.graphdb.query.ResultSetIterator.(ResultSetIterator.java:44)
at org.janusgraph.graphdb.query.QueryProcessor.iterator(QueryProcessor.java:68)
at com.google.common.collect.Iterables$7.iterator(Iterables.java:612)
at org.janusgraph.graphdb.tinkerpop.optimize.JanusGraphStep.lambda$new$0(JanusGraphStep.java:69)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.GraphStep.processNextStart(GraphStep.java:142)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:192)
at ai.grakn.kb.internal.EmbeddedGraknTx.getConcept(EmbeddedGraknTx.java:354)
at ai.grakn.kb.internal.EmbeddedGraknTx.getSchemaConcept(EmbeddedGraknTx.java:599)
at ai.grakn.kb.internal.EmbeddedGraknTx.getSchemaConcept(EmbeddedGraknTx.java:628)
at ai.grakn.kb.admin.GraknAdmin.getMetaConcept(GraknAdmin.java:51)
at ai.grakn.engine.controller.ConceptController.lambda$getTypes$12(ConceptController.java:255)
at ai.grakn.engine.controller.ConceptController.getConcepts(ConceptController.java:275)
at ai.grakn.engine.controller.ConceptController.getTypes(ConceptController.java:255)
at spark.RouteImpl$1.handle(RouteImpl.java:61)
at spark.http.matching.Routes.execute(Routes.java:61)
at spark.http.matching.MatcherFilter.doFilter(MatcherFilter.java:126)
at spark.embeddedserver.jetty.JettyHandler.doHandle(JettyHandler.java:50)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
at org.eclipse.jetty.server.Server.handle(Server.java:517)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.janusgraph.diskstorage.TemporaryBackendException: Could not successfully complete backend operation due to repeated temporary exceptions after PT10S
at org.janusgraph.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:101)
at org.janusgraph.diskstorage.util.BackendOperation.execute(BackendOperation.java:55)
at org.janusgraph.diskstorage.BackendTransaction.executeRead(BackendTransaction.java:470)
at org.janusgraph.diskstorage.BackendTransaction.indexQuery(BackendTransaction.java:396)
at org.janusgraph.graphdb.query.graph.MultiKeySliceQuery.execute(MultiKeySliceQuery.java:51)
at org.janusgraph.graphdb.database.IndexSerializer.query(IndexSerializer.java:530)
at org.janusgraph.graphdb.util.SubqueryIterator.(SubqueryIterator.java:66)
… 37 common frames omitted
Caused by: org.janusgraph.diskstorage.TemporaryBackendException: Temporary failure in storage backend
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:161)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:115)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getSlice(AstyanaxKeyColumnValueStore.java:104)
at org.janusgraph.diskstorage.keycolumnvalue.KCVSProxy.getSlice(KCVSProxy.java:77)
at org.janusgraph.diskstorage.keycolumnvalue.KCVSProxy.getSlice(KCVSProxy.java:77)
at org.janusgraph.diskstorage.BackendTransaction$5.call(BackendTransaction.java:399)
at org.janusgraph.diskstorage.BackendTransaction$5.call(BackendTransaction.java:396)
at org.janusgraph.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:69)
… 43 common frames omitted
Caused by: com.netflix.astyanax.connectionpool.exceptions.NoAvailableHostsException: NoAvailableHostsException: [host=None(0.0.0.0):0, latency=0(0), attempts=0]No hosts to borrow from
at com.netflix.astyanax.connectionpool.impl.RoundRobinExecuteWithFailover.(RoundRobinExecuteWithFailover.java:48)
at com.netflix.astyanax.connectionpool.impl.TokenAwareConnectionPoolImpl.newExecuteWithFailover(TokenAwareConnectionPoolImpl.java:83)
at com.netflix.astyanax.connectionpool.impl.AbstractHostPartitionConnectionPool.executeWithFailover(AbstractHostPartitionConnectionPool.java:352)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4.execute(ThriftColumnFamilyQueryImpl.java:538)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:159)
… 50 common frames omitted
2019-02-15 10:50:20,164 [qtp1023745907-89] WARN a.g.e.controller.GraqlController - Retrying transaction after {1} attempts due to exception {Could not call index}
2019-02-15 10:50:20,166 [qtp1023745907-89] ERROR ai.grakn.engine.ServerHTTP - REST error
org.janusgraph.core.JanusGraphException: Could not call index
at org.janusgraph.graphdb.util.SubqueryIterator.(SubqueryIterator.java:71)
at org.janusgraph.graphdb.transaction.StandardJanusGraphTx$6.execute(StandardJanusGraphTx.java:1281)
at org.janusgraph.graphdb.transaction.StandardJanusGraphTx$6.execute(StandardJanusGraphTx.java:1150)
at org.janusgraph.graphdb.query.QueryProcessor$LimitAdjustingIterator.getNewIterator(QueryProcessor.java:209)
at org.janusgraph.graphdb.query.LimitAdjustingIterator.hasNext(LimitAdjustingIterator.java:68)
at org.janusgraph.graphdb.query.ResultSetIterator.nextInternal(ResultSetIterator.java:54)
at org.janusgraph.graphdb.query.ResultSetIterator.(ResultSetIterator.java:44)
at org.janusgraph.graphdb.query.QueryProcessor.iterator(QueryProcessor.java:68)
at com.google.common.collect.Iterables$7.iterator(Iterables.java:612)
at org.janusgraph.graphdb.tinkerpop.optimize.JanusGraphStep.lambda$new$0(JanusGraphStep.java:69)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.GraphStep.processNextStart(GraphStep.java:142)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:192)
at ai.grakn.kb.internal.EmbeddedGraknTx.getConcept(EmbeddedGraknTx.java:354)
at ai.grakn.kb.internal.EmbeddedGraknTx.getSchemaConcept(EmbeddedGraknTx.java:599)
at ai.grakn.kb.internal.EmbeddedGraknTx.getSchemaConcept(EmbeddedGraknTx.java:628)
at ai.grakn.kb.admin.GraknAdmin.getMetaRule(GraknAdmin.java:101)
at ai.grakn.graql.internal.reasoner.rule.RuleUtils.hasRules(RuleUtils.java:62)
at ai.grakn.graql.internal.query.match.MatchInfer.stream(MatchInfer.java:60)
at ai.grakn.graql.internal.query.match.MatchTx.stream(MatchTx.java:51)
at ai.grakn.graql.internal.query.match.AbstractMatch.stream(AbstractMatch.java:69)
at ai.grakn.graql.internal.query.executor.QueryExecutorImpl.run(QueryExecutorImpl.java:72)
at ai.grakn.graql.internal.query.GetQueryImpl.stream(GetQueryImpl.java:65)
at ai.grakn.graql.Query.execute(Query.java:60)
at ai.grakn.engine.controller.GraqlController.executeAndMonitor(GraqlController.java:293)
at ai.grakn.engine.controller.GraqlController.executeQuery(GraqlController.java:280)
at ai.grakn.engine.controller.GraqlController.lambda$executeGraql$5(GraqlController.java:193)
at com.github.rholder.retry.AttemptTimeLimiters$NoAttemptTimeLimit.call(AttemptTimeLimiters.java:78)
at com.github.rholder.retry.Retryer.call(Retryer.java:160)
at ai.grakn.engine.controller.GraqlController.executeFunctionWithRetrying(GraqlController.java:209)
at ai.grakn.engine.controller.GraqlController.executeGraql(GraqlController.java:182)
at spark.RouteImpl$1.handle(RouteImpl.java:61)
at spark.http.matching.Routes.execute(Routes.java:61)
at spark.http.matching.MatcherFilter.doFilter(MatcherFilter.java:126)
at spark.embeddedserver.jetty.JettyHandler.doHandle(JettyHandler.java:50)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
at org.eclipse.jetty.server.Server.handle(Server.java:517)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.janusgraph.diskstorage.TemporaryBackendException: Could not successfully complete backend operation due to repeated temporary exceptions after PT10S
at org.janusgraph.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:101)
at org.janusgraph.diskstorage.util.BackendOperation.execute(BackendOperation.java:55)
at org.janusgraph.diskstorage.BackendTransaction.executeRead(BackendTransaction.java:470)
at org.janusgraph.diskstorage.BackendTransaction.indexQuery(BackendTransaction.java:396)
at org.janusgraph.graphdb.query.graph.MultiKeySliceQuery.execute(MultiKeySliceQuery.java:51)
at org.janusgraph.graphdb.database.IndexSerializer.query(IndexSerializer.java:530)
at org.janusgraph.graphdb.util.SubqueryIterator.(SubqueryIterator.java:66)
… 48 common frames omitted
Caused by: org.janusgraph.diskstorage.TemporaryBackendException: Temporary failure in storage backend
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:161)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:115)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getSlice(AstyanaxKeyColumnValueStore.java:104)
at org.janusgraph.diskstorage.keycolumnvalue.KCVSProxy.getSlice(KCVSProxy.java:77)
at org.janusgraph.diskstorage.keycolumnvalue.KCVSProxy.getSlice(KCVSProxy.java:77)
at org.janusgraph.diskstorage.BackendTransaction$5.call(BackendTransaction.java:399)
at org.janusgraph.diskstorage.BackendTransaction$5.call(BackendTransaction.java:396)
at org.janusgraph.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:69)
… 54 common frames omitted
Caused by: com.netflix.astyanax.connectionpool.exceptions.NoAvailableHostsException: NoAvailableHostsException: [host=None(0.0.0.0):0, latency=0(0), attempts=0]No hosts to borrow from
at com.netflix.astyanax.connectionpool.impl.RoundRobinExecuteWithFailover.(RoundRobinExecuteWithFailover.java:48)
at com.netflix.astyanax.connectionpool.impl.TokenAwareConnectionPoolImpl.newExecuteWithFailover(TokenAwareConnectionPoolImpl.java:83)
at com.netflix.astyanax.connectionpool.impl.AbstractHostPartitionConnectionPool.executeWithFailover(AbstractHostPartitionConnectionPool.java:352)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4.execute(ThriftColumnFamilyQueryImpl.java:538)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:159)
… 61 common frames omitted
2019-02-15 10:50:23,555 [qtp1023745907-55] WARN a.g.e.controller.GraqlController - Retrying transaction after {1} attempts due to exception {Could not call index}
2019-02-15 10:50:23,556 [qtp1023745907-55] ERROR ai.grakn.engine.ServerHTTP - REST error
org.janusgraph.core.JanusGraphException: Could not call index
at org.janusgraph.graphdb.util.SubqueryIterator.(SubqueryIterator.java:71)
at org.janusgraph.graphdb.transaction.StandardJanusGraphTx$6.execute(StandardJanusGraphTx.java:1281)
at org.janusgraph.graphdb.transaction.StandardJanusGraphTx$6.execute(StandardJanusGraphTx.java:1150)
at org.janusgraph.graphdb.query.QueryProcessor$LimitAdjustingIterator.getNewIterator(QueryProcessor.java:209)
at org.janusgraph.graphdb.query.LimitAdjustingIterator.hasNext(LimitAdjustingIterator.java:68)
at org.janusgraph.graphdb.query.ResultSetIterator.nextInternal(ResultSetIterator.java:54)
at org.janusgraph.graphdb.query.ResultSetIterator.(ResultSetIterator.java:44)
at org.janusgraph.graphdb.query.QueryProcessor.iterator(QueryProcessor.java:68)
at com.google.common.collect.Iterables$7.iterator(Iterables.java:612)
at org.janusgraph.graphdb.tinkerpop.optimize.JanusGraphStep.lambda$new$0(JanusGraphStep.java:69)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.GraphStep.processNextStart(GraphStep.java:142)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:192)
at ai.grakn.kb.internal.EmbeddedGraknTx.getConcept(EmbeddedGraknTx.java:354)
at ai.grakn.kb.internal.EmbeddedGraknTx.getSchemaConcept(EmbeddedGraknTx.java:599)
at ai.grakn.kb.internal.EmbeddedGraknTx.getSchemaConcept(EmbeddedGraknTx.java:628)
at ai.grakn.kb.admin.GraknAdmin.getMetaRule(GraknAdmin.java:101)
at ai.grakn.graql.internal.reasoner.rule.RuleUtils.hasRules(RuleUtils.java:62)
at ai.grakn.graql.internal.query.match.MatchInfer.stream(MatchInfer.java:60)
at ai.grakn.graql.internal.query.match.MatchTx.stream(MatchTx.java:51)
at ai.grakn.graql.internal.query.match.AbstractMatch.stream(AbstractMatch.java:69)
at ai.grakn.graql.internal.query.executor.QueryExecutorImpl.run(QueryExecutorImpl.java:72)
at ai.grakn.graql.internal.query.GetQueryImpl.stream(GetQueryImpl.java:65)
at ai.grakn.graql.Query.execute(Query.java:60)
at ai.grakn.engine.controller.GraqlController.executeAndMonitor(GraqlController.java:293)
at ai.grakn.engine.controller.GraqlController.executeQuery(GraqlController.java:280)
at ai.grakn.engine.controller.GraqlController.lambda$executeGraql$5(GraqlController.java:193)
at com.github.rholder.retry.AttemptTimeLimiters$NoAttemptTimeLimit.call(AttemptTimeLimiters.java:78)
at com.github.rholder.retry.Retryer.call(Retryer.java:160)
at ai.grakn.engine.controller.GraqlController.executeFunctionWithRetrying(GraqlController.java:209)
at ai.grakn.engine.controller.GraqlController.executeGraql(GraqlController.java:182)
at spark.RouteImpl$1.handle(RouteImpl.java:61)
at spark.http.matching.Routes.execute(Routes.java:61)
at spark.http.matching.MatcherFilter.doFilter(MatcherFilter.java:126)
at spark.embeddedserver.jetty.JettyHandler.doHandle(JettyHandler.java:50)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
at org.eclipse.jetty.server.Server.handle(Server.java:517)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.janusgraph.diskstorage.TemporaryBackendException: Could not successfully complete backend operation due to repeated temporary exceptions after PT10S
at org.janusgraph.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:101)
at org.janusgraph.diskstorage.util.BackendOperation.execute(BackendOperation.java:55)
at org.janusgraph.diskstorage.BackendTransaction.executeRead(BackendTransaction.java:470)
at org.janusgraph.diskstorage.BackendTransaction.indexQuery(BackendTransaction.java:396)
at org.janusgraph.graphdb.query.graph.MultiKeySliceQuery.execute(MultiKeySliceQuery.java:51)
at org.janusgraph.graphdb.database.IndexSerializer.query(IndexSerializer.java:530)
at org.janusgraph.graphdb.util.SubqueryIterator.(SubqueryIterator.java:66)
… 48 common frames omitted
Caused by: org.janusgraph.diskstorage.TemporaryBackendException: Temporary failure in storage backend
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:161)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:115)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getSlice(AstyanaxKeyColumnValueStore.java:104)
at org.janusgraph.diskstorage.keycolumnvalue.KCVSProxy.getSlice(KCVSProxy.java:77)
at org.janusgraph.diskstorage.keycolumnvalue.KCVSProxy.getSlice(KCVSProxy.java:77)
at org.janusgraph.diskstorage.BackendTransaction$5.call(BackendTransaction.java:399)
at org.janusgraph.diskstorage.BackendTransaction$5.call(BackendTransaction.java:396)
at org.janusgraph.diskstorage.util.BackendOperation.executeDirect(BackendOperation.java:69)
… 54 common frames omitted
Caused by: com.netflix.astyanax.connectionpool.exceptions.NoAvailableHostsException: NoAvailableHostsException: [host=None(0.0.0.0):0, latency=0(0), attempts=0]No hosts to borrow from
at com.netflix.astyanax.connectionpool.impl.RoundRobinExecuteWithFailover.(RoundRobinExecuteWithFailover.java:48)
at com.netflix.astyanax.connectionpool.impl.TokenAwareConnectionPoolImpl.newExecuteWithFailover(TokenAwareConnectionPoolImpl.java:83)
at com.netflix.astyanax.connectionpool.impl.AbstractHostPartitionConnectionPool.executeWithFailover(AbstractHostPartitionConnectionPool.java:352)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$4.execute(ThriftColumnFamilyQueryImpl.java:538)
at org.janusgraph.diskstorage.cassandra.astyanax.AstyanaxKeyColumnValueStore.getNamesSlice(AstyanaxKeyColumnValueStore.java:159)
… 61 common frames omitted

Can anyone help me in solving this ?


#25

Hi @sudhakar,

can you please download and try Grakn 1.4.3?

We have removed the Queue component, so you should not have this problem anymore.


#26

Hi Macro
I tried with latest version(1.4.3) also it is giving same error. Able to start Storage not Engine.


#27

Hey @sudhakar,

please reboot your machine or make sure there are not broken processes still running from your previous attempts of running Grakn 1.3.

With a fresh machine try running 1.4.3 and if it still fails please report what’s printed in logs/grakn.log

Thank you


#28

Hi @macro
As per your suggestion i restarted my system n tried to start Grakn 1.4.3. Now it is throwing below error

Starting Storage…FAILED!
Unable to start Storage.
Process exited with code ‘3’: ‘’
An error has occurred during boot-up. Please run ‘grakn server status’ or check the logs located under the ‘logs’ directory.
Process exited with code ‘3’: ‘’

grakn.log:

2019-02-18 10:42:08,223 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-core-1.4.3
2019-02-18 10:42:08,228 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-core-1.4.3/conf/grakn.properties
2019-02-18 10:42:08,232 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-core-1.4.3
2019-02-18 10:42:08,232 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-core-1.4.3/conf/grakn.properties
2019-02-18 10:42:08,234 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: /home/admin/Softwares/grakn-core-1.4.3
2019-02-18 10:42:08,234 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: /home/admin/Softwares/grakn-core-1.4.3/conf/grakn.properties
2019-02-18 10:42:40,218 [main] ERROR ai.grakn.engine.bootup.GraknBootup - An error has occurred during boot-up. Please run ‘grakn server status’ or check the logs located under the ‘logs’ directory.
ai.grakn.engine.bootup.BootupException: Process exited with code ‘3’: ‘’
at ai.grakn.engine.bootup.StorageBootup.start(StorageBootup.java:157)
at ai.grakn.engine.bootup.StorageBootup.startIfNotRunning(StorageBootup.java:82)
at ai.grakn.engine.bootup.GraknBootup.serverStart(GraknBootup.java:181)
at ai.grakn.engine.bootup.GraknBootup.server(GraknBootup.java:141)
at ai.grakn.engine.bootup.GraknBootup.run(GraknBootup.java:128)
at ai.grakn.engine.bootup.GraknBootup.main(GraknBootup.java:70)

Note : Before starting grakn , if i execute “ls -la /tmp/*.pid” command. Its showing pid file in tmp folder.

o/p of ls -la /tmp/*.pid cmd:

-rw-------. 1 root root 5 Feb 15 15:58 /tmp/grakn-engine.pid


#29

Adding cassandra.log :

INFO [main] 2019-02-18 10:42:34,656 CassandraDaemon.java:480 - JVM vendor/version: OpenJDK 64-Bit Server VM/1.8.0_171
INFO [main] 2019-02-18 10:42:34,658 CassandraDaemon.java:481 - Heap size: 481.500MiB/6.946GiB
INFO [main] 2019-02-18 10:42:34,659 CassandraDaemon.java:486 - Code Cache Non-heap memory: init = 2555904(2496K) used = 4247424(4147K) committed = 4259840(4160K) max = 251658240(245760K)
INFO [main] 2019-02-18 10:42:34,659 CassandraDaemon.java:486 - Metaspace Non-heap memory: init = 0(0K) used = 19832248(19367K) committed = 20316160(19840K) max = -1(-1K)
INFO [main] 2019-02-18 10:42:34,660 CassandraDaemon.java:486 - Compressed Class Space Non-heap memory: init = 0(0K) used = 2299528(2245K) committed = 2490368(2432K) max = 1073741824(1048576K)
INFO [main] 2019-02-18 10:42:34,660 CassandraDaemon.java:486 - PS Eden Space Heap memory: init = 132120576(129024K) used = 116279048(113553K) committed = 132120576(129024K) max = 2753560576(2689024K)
INFO [main] 2019-02-18 10:42:34,660 CassandraDaemon.java:486 - PS Survivor Space Heap memory: init = 21495808(20992K) used = 0(0K) committed = 21495808(20992K) max = 21495808(20992K)
INFO [main] 2019-02-18 10:42:34,661 CassandraDaemon.java:486 - PS Old Gen Heap memory: init = 351272960(343040K) used = 0(0K) committed = 351272960(343040K) max = 5594152960(5463040K)
INFO [main] 2019-02-18 10:42:34,661 CassandraDaemon.java:488 - Classpath: /home/admin/Softwares/grakn-core-1.4.3/services/lib/logback-classic-1.2.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/guava-23.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/groovy-2.4.15-indy.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-mapreduce-client-common-2.7.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-mapreduce-client-shuffle-2.7.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-mapreduce-client-jobclient-2.7.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jackson-mapper-asl-1.9.13.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/chill-java-0.8.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/minlog-1.3.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/objenesis-2.5.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/xbean-asm5-shaded-4.4.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-crypto-1.0.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/spark-unsafe_2.11-2.2.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/mail-1.4.7.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/lz4-1.3.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-net-2.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/json4s-ast_2.11-3.2.11.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/scalap-2.11.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/javax.annotation-api-1.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jersey-guava-2.22.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/pyrolite-4.13.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/snappy-java-1.0.5-M3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jts-core-1.15.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jffi-1.2.16-native.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/log4j-over-slf4j-1.7.20.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jcl-over-slf4j-1.7.20.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/json-simple-1.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/airline-0.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/reporter-config3-3.0.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/reporter-config-base-3.0.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hibernate-validator-4.3.0.Final.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/ant-launcher-1.7.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/snowball-stemmer-1.3.0.581.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/concurrent-trees-2.4.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jna-4.2.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-pool-1.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/astyanax-cassandra-all-shaded-3.10.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-collections-3.2.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/httpclient-4.5.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jackson-module-scala_2.11-2.9.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jackson-module-paranamer-2.9.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/paranamer-2.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/grakn-kb-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-gremlin-3.3.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/ivy-2.4.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jsp-api-2.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/protobuf-java-3.5.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/htrace-core-3.1.0-incubating.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/xml-apis-1.0.b2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/leveldbjni-all-1.8.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/spark-core_2.11-2.2.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/janino-2.7.8.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-configuration-1.10.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/snakeyaml-1.18.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/javapoet-1.8.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-lang3-3.5.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-logging-1.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/rxjava-1.3.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/groovy-groovysh-2.4.15-indy.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/groovy-swing-2.4.15.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jline-2.12.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-annotations-2.7.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-cli-1.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/xmlenc-0.52.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-httpclient-3.1.jar:/home/admin/Softwares/grakn-core-1.4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-thrift-3.10.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jsr311-api-1.1.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/guava-retrying-2.0.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hystrix-core-1.5.12.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/opencensus-contrib-grpc-metrics-0.12.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/proto-google-common-protos-1.0.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/netty-buffer-4.1.30.Final.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/netty-handler-proxy-4.1.30.Final.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/netty-codec-socks-4.1.30.Final.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/migration-xml-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/migration-csv-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-csv-1.4.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/migration-json-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/migration-export-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/metrics-servlets-3.2.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/profiler-1.0.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/simpleclient_servlet-0.0.13.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/simpleclient-0.0.13.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jetty-server-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/zt-exec-1.10.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/scala-compiler-2.11.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/slf4j-api-1.7.20.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-compiler-2.7.8.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/pf4j-1.3.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/grakn-graql-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jcabi-manifests-1.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jcabi-log-0.14.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/exp4j-0.4.8.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/tinkergraph-gremlin-3.3.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/httpcore-4.4.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-codec-1.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jackson-databind-2.9.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/groovy-templates-2.4.15.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/groovy-xml-2.4.15.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/groovy-jsr223-2.4.15-indy.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jbcrypt-0.3m.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/caffeine-2.2.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/apacheds-i18n-2.0.0-M15.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/api-asn1-api-1.0.0-M20.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/api-util-1.0.0-M20.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/zookeeper-3.4.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/xz-1.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/xercesImpl-2.9.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-mapreduce-client-app-2.7.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-yarn-client-2.7.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-yarn-server-common-2.7.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/avro-1.7.7.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/chill_2.11-0.8.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/kryo-shaded-3.0.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/mx4j-3.0.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jul-to-slf4j-1.7.16.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/compress-lzf-1.0.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/RoaringBitmap-0.5.11.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/json4s-jackson_2.11-3.2.11.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/json4s-core_2.11-3.2.11.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jersey-client-2.22.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/javax.ws.rs-api-2.0.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jersey-common-2.22.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/validation-api-1.1.0.Final.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/stream-2.7.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/scala-xml_2.11-1.0.5.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/metrics-graphite-3.0.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/reflections-0.9.9-RC1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/high-scale-lib-1.1.4.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/noggit-0.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-text-1.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/elasticsearch-rest-client-6.0.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/httpcore-nio-4.4.5.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/sesame-rio-rdfxml-2.7.10.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jnr-ffi-2.1.7.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/antlr-3.5.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jamm-0.3.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/joda-time-2.4.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/ohc-core-0.4.4.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/ohc-core-j8-0.4.4.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jctools-core-1.2.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/uuid-3.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/astyanax-cassandra-3.10.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jersey-client-1.19.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/archaius-core-0.4.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/HdrHistogram-2.1.9.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/grpc-protobuf-1.15.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/grpc-core-1.15.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/netty-codec-http-4.1.30.Final.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/netty-common-4.1.30.Final.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jetty-http-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jetty-io-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jetty-webapp-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jetty-security-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/websocket-api-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/websocket-client-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/websocket-servlet-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jackson-dataformat-yaml-2.9.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/grakn-factory-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/scala-parser-combinators_2.11-1.0.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/grakn-dist-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/commons-lang-2.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/javatuples-1.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hppc-0.7.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/scala-reflect-2.11.8.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hadoop-yarn-common-2.7.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/spark-network-shuffle_2.11-2.2.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jets3t-0.9.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/hk2-utils-2.4.0-b34.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/javassist-3.16.1-GA.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/janusgraph-hadoop-0.3.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/janusgraph-core-0.3.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/concurrentlinkedhashmap-lru-1.4.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/ST4-4.0.8.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jboss-logging-3.1.0.CR2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/libthrift-0.9.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/ant-1.7.0.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/astyanax-core-3.10.2.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/org.abego.treelayout.core-1.0.1.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/client-java-1.4.3.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jetty-xml-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/jetty-servlet-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/websocket-server-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/websocket-common-9.3.6.v20151106.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/high-scale-lib-1.0.6.jar:/home/admin/Softwares/grakn-core-1.4.3/services/lib/netty-tcnative-boringssl-static-2.0.14.Final.jar:/home/admin/Softwares/grakn-core-1.4.3/services/cassandra
INFO [main] 2019-02-18 10:42:34,662 CassandraDaemon.java:490 - JVM Arguments: [-Dlogback.configurationFile=/home/admin/Softwares/grakn-core-1.4.3/services/cassandra/logback.xml, -Dcassandra.logdir=/home/admin/Softwares/grakn-core-1.4.3/./logs, -Dcassandra-pidfile=/tmp/grakn-storage.pid, -Dcassandra.superuser_setup_delay_ms=0, -Dcassandra.jmx.local.port=7199, -XX:+CrashOnOutOfMemoryError]
WARN [main] 2019-02-18 10:42:34,762 NativeLibrary.java:187 - Unable to lock JVM memory (ENOMEM). This can result in part of the JVM being swapped out, especially with mmapped I/O enabled. Increase RLIMIT_MEMLOCK or run Cassandra as root.
WARN [main] 2019-02-18 10:42:34,762 StartupChecks.java:136 - jemalloc shared library could not be preloaded to speed up memory allocations
WARN [main] 2019-02-18 10:42:34,762 StartupChecks.java:169 - JMX is not enabled to receive remote connections. Please see cassandra-env.sh for more info.
INFO [main] 2019-02-18 10:42:34,766 SigarLibrary.java:44 - Initializing SIGAR library
INFO [main] 2019-02-18 10:42:34,794 SigarLibrary.java:57 - Could not initialize SIGAR library org.hyperic.sigar.Sigar.getFileSystemListNative()[Lorg/hyperic/sigar/FileSystem;
INFO [main] 2019-02-18 10:42:34,794 SigarLibrary.java:185 - Sigar could not be initialized, test for checking degraded mode omitted.
WARN [main] 2019-02-18 10:42:34,801 StartupChecks.java:311 - Maximum number of memory map areas per process (vm.max_map_count) 65530 is too low, recommended value: 1048575, you can change it with sysctl.
ERROR [main] 2019-02-18 10:42:35,055 CassandraDaemon.java:708 - Unable to verify sstable files on disk
java.nio.file.AccessDeniedException: db/cassandra/data/grakn
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.newDirectoryStream(UnixFileSystemProvider.java:427)
at java.nio.file.Files.newDirectoryStream(Files.java:457)
at java.nio.file.FileTreeWalker.visit(FileTreeWalker.java:300)
at java.nio.file.FileTreeWalker.next(FileTreeWalker.java:372)
at java.nio.file.Files.walkFileTree(Files.java:2706)
at java.nio.file.Files.walkFileTree(Files.java:2742)
at org.apache.cassandra.service.StartupChecks$9.execute(StartupChecks.java:390)
at org.apache.cassandra.service.StartupChecks.verify(StartupChecks.java:125)
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:200)
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:602)
at ai.grakn.engine.bootup.GraknCassandra.main(GraknCassandra.java:39)


#30

@sudhakar you can see here that Cassandra throws an AccessDenied exception,

are you sure you have given grakn the right permission to write to that folder? db/cassandra/data/grakn

Your errors seem to be related to write permissions on folders.
Maybe try running grakn in a non-admin directory just to make sure it starts successfully.


#31

Hi @macro
I tried to run grakn with root user, able to start Storage but not Engine.

[root@VSOLSOCH101 grakn-core-1.4.3]# ./grakn server start

  ________  _____     _______  __    __  __    __      _______  _______  _____     _______
 |   __   ||   _  \  |   _   ||  |  /  /|  \  |  |    |   _   ||   _   ||   _  \  |   ____|
 |  |  |__||  | |  | |  | |  ||  | /  / |   \ |  |    |  | |__||  | |  ||  | |  | |  |
 |  | ____ |  |_| /  |  |_|  ||  |/  /  |    \|  |    |  |     |  | |  ||  |_| /  |  |____
 |  ||_   ||   _  \  |   _   ||   _  \  |   _    |    |  |  __ |  | |  ||   _  \  |   ____|
 |  |__|  ||  | \  \ |  | |  ||  | \  \ |  | \   |    |  |_|  ||  |_|  ||  | \  \ |  |____
 |________||__|  \__\|__| |__||__|  \__\|__|  \__|    |_______||_______||__|  \__\|_______|

                                     THE KNOWLEDGE GRAPH

====================================================================================================

Starting Storage…SUCCESS
Starting Engine…FAILED!
Unable to start Engine.

If i run same zip file(1.4.3) in another vm its working perfectly fine. Is there any changes i have to make in my system to run grakn?


#32

@sudhakar Well without the grakn.log we can’t help you. Please share. Or join our Slack channel to chat directly with uts


#33

@macro uploaded both grakn.log and cassandra.log. PFA.

grakn.log (2.7 KB)

cassandra.log (49.2 KB)


#34

No errors in the log. grakn.log says Grakn is up and running.

Restart the machine and run grakn as root, everything seems to be working this time


#35

Hi,

I am getting this error to do with the engine when trying to start the grakn core:

====================================================================================================
________ _____ _______ __ __ __ __ _______ _______ _____ _______
| __ || _ \ | _ || | / /| \ | | | _ || _ || _ \ | |
| | ||| | | | | | | || | / / | \ | | | | ||| | | || | | | | |
| | ____ | |
| / | |
| || |/ / | | | | | | | | || |
| / | |
___
| ||_ || _ \ | _ || _ \ | _ | | | __ | | | || _ \ | |
| |__| || | \ \ | | | || | \ \ | | \ | | |
| || |
| || | \ \ | |
__
|||| __|| |||| _|__| _| |||||__| _|______|

                                     THE KNOWLEDGE GRAPH

====================================================================================================

Storage is already running
Starting Engine…FAILED!
Unable to start Engine.
Process exited with code ‘1’: ‘’
An error has occurred during boot-up. Please run ‘grakn server status’ or check the logs located under the ‘logs’ directory.
Process exited with code ‘1’: ‘’


  1. Grakn version: 1.4.3

  2. Operating system: Windows 10 Professional

  3. I downloaded Grakn manually from the zip folder.

  4. Tried to start the server using ./grakn server start

  5. Storage running but Engine Failed.

  6. Here are the logs:

2019-03-05 14:51:45,953 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3
2019-03-05 14:51:45,969 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3\conf\grakn.properties
2019-03-05 14:51:45,969 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3
2019-03-05 14:51:45,969 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3\conf\grakn.properties
2019-03-05 14:55:43,203 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3
2019-03-05 14:55:43,219 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3\conf\grakn.properties
2019-03-05 14:55:43,219 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3
2019-03-05 14:55:43,219 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3\conf\grakn.properties
2019-03-05 14:55:43,219 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3
2019-03-05 14:55:43,219 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3\conf\grakn.properties
2019-03-05 14:55:44,937 [main] INFO ai.grakn.engine.GraknConfig - Project directory in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3
2019-03-05 14:55:44,937 [main] INFO ai.grakn.engine.GraknConfig - Configuration file in use: C:\Users\U89580\Documents\Data Science Training Notes and Sources\Useful Sources\Grakn\grakn-core-1.4.3\conf\grakn.properties
2019-03-05 14:55:44,999 [main] ERROR ai.grakn.engine.bootup.Grakn - Uncaught exception at thread [main]
java.lang.ExceptionInInitializerError: null
at org.rocksdb.RocksDB.loadLibrary(RocksDB.java:64)
at org.rocksdb.RocksDB.(RocksDB.java:35)
at org.rocksdb.Options.(Options.java:25)
at ai.grakn.engine.attribute.deduplicator.queue.RocksDbQueue.(RocksDbQueue.java:61)
at ai.grakn.engine.attribute.deduplicator.AttributeDeduplicatorDaemonImpl.(AttributeDeduplicatorDaemonImpl.java:77)
at ai.grakn.engine.ServerFactory.createServer(ServerFactory.java:70)
at ai.grakn.engine.bootup.Grakn.main(Grakn.java:62)
Caused by: java.lang.UnsupportedOperationException: Cannot determine JNI library name for ARCH=‘x86’ OS=‘windows 10’ name=‘rocksdb’
at org.rocksdb.util.Environment.getJniLibraryName(Environment.java:78)
at org.rocksdb.NativeLibraryLoader.(NativeLibraryLoader.java:19)
… 7 common frames omitted
2019-03-05 14:55:45,937 [main] ERROR ai.grakn.engine.bootup.GraknBootup - An error has occurred during boot-up. Please run ‘grakn server status’ or check the logs located under the ‘logs’ directory.
ai.grakn.engine.bootup.BootupException: Process exited with code ‘1’: ‘’
at ai.grakn.engine.bootup.EngineBootup.start(EngineBootup.java:146)
at ai.grakn.engine.bootup.EngineBootup.startIfNotRunning(EngineBootup.java:80)
at ai.grakn.engine.bootup.GraknBootup.serverStart(GraknBootup.java:182)
at ai.grakn.engine.bootup.GraknBootup.server(GraknBootup.java:141)
at ai.grakn.engine.bootup.GraknBootup.run(GraknBootup.java:128)
at ai.grakn.engine.bootup.GraknBootup.main(GraknBootup.java:70)

Any help would be very appreciated, Thanks!

Kieran


#36

Hi @kieranv96,

it looks like you’re running java 32bit, (ARCH=‘x86’) from:

Caused by: java.lang.UnsupportedOperationException: Cannot determine JNI library name for ARCH=‘x86’ OS=‘windows 10’ name=‘rocksdb’

can you check if you have java 64bit with java -version.

If it’s 32bit please update to java 1.8 64bit

Marco


#37

Hi Marco,

Thank you for your reply. Running -java version gives this:

C:\Users\U89580>java -version
java version “1.8.0_201”
Java™ SE Runtime Environment (build 1.8.0_201-b09)
Java HotSpot™ Client VM (build 25.201-b09, mixed mode)

I’m not sure if this is 32bit or 64bit? However, I did just install java 64bit through the java website just to make sure it is on my system and I am still getting the same error with the engine failing on startup.

Thanks,

Kieran


#38

The output of java -version should mention 64-bit otherwise it’s 32 bit, example:

java version "1.8.0_152"
Java(TM) SE Runtime Environment (build 1.8.0_152-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.152-b16, mixed mode)

Remove current version and install 64bit, (verify using java -version), reboot your machine and try again