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https://issues.apache.org/jira/browse/ATLAS-2129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashutosh Mestry updated ATLAS-2129:
-----------------------------------
Attachment: import-nested-txn.patch
> Atlas shutdown during progress of bulk import throws
> ConcurrentModificationException
> ------------------------------------------------------------------------------------
>
> Key: ATLAS-2129
> URL: https://issues.apache.org/jira/browse/ATLAS-2129
> Project: Atlas
> Issue Type: Bug
> Components: atlas-core
> Affects Versions: 0.9-incubating
> Reporter: Sharmadha Sainath
> Assignee: Ashutosh Mestry
> Priority: Blocker
> Attachments: import-nested-txn.patch
>
>
> 1. Exported an hive_db containing 300 hive_table entities from cluster1 into
> a zip file .
> 2. Tried to import into cluster2.
> 3. When the import was in progress ( at 34%) , stopped Atlas.
> 4. Following exception was seen in application logs of cluster2 :
> {code}
> 2017-09-11 10:17:09,192 INFO - [pool-2-thread-9 -
> 83fe24a2-ff2b-4add-a94e-a54b09090912:] ~ bulkImport(): progress: 34% (of 301)
> -
> entity:last-imported:hive_table:[102]:(2d629a8e-5c94-40e8-b83f-8a9c91c6de8d)
> (AtlasEntityStoreV1:238)
> 2017-09-11 10:17:09,340 ERROR - [SIGTERM handler:] ~ Could not commit
> transaction [1] due to exception (StandardTitanGraph:731)
> java.util.ConcurrentModificationException
> at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
> at java.util.ArrayList$Itr.next(ArrayList.java:851)
> at
> atlas.shaded.titan.guava.common.collect.Iterators$7.computeNext(Iterators.java:701)
> at
> atlas.shaded.titan.guava.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
> at
> atlas.shaded.titan.guava.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
> at
> com.thinkaurelius.titan.graphdb.database.StandardTitanGraph.prepareCommit(StandardTitanGraph.java:473)
> at
> com.thinkaurelius.titan.graphdb.database.StandardTitanGraph.commit(StandardTitanGraph.java:654)
> at
> com.thinkaurelius.titan.graphdb.transaction.StandardTitanTx.commit(StandardTitanTx.java:1337)
> at
> com.thinkaurelius.titan.graphdb.blueprints.TitanBlueprintsGraph.shutdown(TitanBlueprintsGraph.java:120)
> at
> com.thinkaurelius.titan.graphdb.database.StandardTitanGraph.shutdownInternal(StandardTitanGraph.java:171)
> at
> com.thinkaurelius.titan.graphdb.database.StandardTitanGraph.access$700(StandardTitanGraph.java:75)
> at
> com.thinkaurelius.titan.graphdb.database.StandardTitanGraph$ShutdownThread.start(StandardTitanGraph.java:756)
> at
> java.lang.ApplicationShutdownHooks.runHooks(ApplicationShutdownHooks.java:102)
> at
> java.lang.ApplicationShutdownHooks$1.run(ApplicationShutdownHooks.java:46)
> at java.lang.Shutdown.runHooks(Shutdown.java:123)
> at java.lang.Shutdown.sequence(Shutdown.java:167)
> at java.lang.Shutdown.exit(Shutdown.java:212)
> at java.lang.Terminator$1.handle(Terminator.java:52)
> at sun.misc.Signal$1.run(Signal.java:212)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> Other operations that are called during Atlas shut down such as Shutdown hook
> , Stopping KafkaNotification service , NotificationHookConsumer ,
> HBaseBasedAuditRepository are not called.
> 5.After that , restarted Atlas. Atlas functioned properly.
> 6.Resumed import with import option , startGuid= <GUID present in logs at 33
> %. Atlas was stopped when Import was going on at 34% >
> 7. Import completed successfully.
> 8.Post import, only entities from 33% to 100% were imported . Initial 32% of
> the entities were not imported.
> 9.Fired an import command again without any interruption and without
> specifying the startGUID. All 300 hive_table entities and 1 hive_db were
> imported successfully.
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