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From "Murtadha Hubail (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ASTERIXDB-1114) managix stop [instance_name] throws NullPointerException during checkpoint
Date Sun, 27 Sep 2015 02:30:04 GMT

    [ https://issues.apache.org/jira/browse/ASTERIXDB-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14909567#comment-14909567
] 

Murtadha Hubail commented on ASTERIXDB-1114:
--------------------------------------------

I had a reproducible scenario and figured out the exact reason behind this NPE then fixed
it. What worried me is that none of the recovery test cases caught this, which means some
of them might not be testing what they are supposed to test. I'm going to have a look at them
and add a test case if there is a need to.

> managix stop [instance_name] throws NullPointerException during checkpoint
> --------------------------------------------------------------------------
>
>                 Key: ASTERIXDB-1114
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-1114
>             Project: Apache AsterixDB
>          Issue Type: Bug
>            Reporter: Young-Seok Kim
>            Assignee: Murtadha Hubail
>
> When AsterixDB instance is stopped after inserting a record, checkpoint from the recovery
manager throws NullPointerException, which doesn't make NCDriver stop. 
> The exception is shown below:
> INFO: Stopping NodeControllerService
> java.lang.NullPointerException
>     at org.apache.asterix.common.context.BaseOperationTracker.beforeOperation(BaseOperationTracker.java:45)
>     at org.apache.hyracks.storage.am.lsm.common.impls.LSMHarness.enterComponents(LSMHarness.java:178)
>     at org.apache.hyracks.storage.am.lsm.common.impls.LSMHarness.getAndEnterComponents(LSMHarness.java:113)
>     at org.apache.hyracks.storage.am.lsm.common.impls.LSMHarness.scheduleFlush(LSMHarness.java:376)
>     at org.apache.hyracks.storage.am.lsm.common.impls.LSMTreeIndexAccessor.scheduleFlush(LSMTreeIndexAccessor.java:122)
>     at org.apache.asterix.common.context.DatasetLifecycleManager.flushAndWaitForIO(DatasetLifecycleManager.java:237)
>     at org.apache.asterix.common.context.DatasetLifecycleManager.flushDatasetOpenIndexes(DatasetLifecycleManager.java:518)
>     at org.apache.asterix.common.context.DatasetLifecycleManager.flushAllDatasets(DatasetLifecycleManager.java:439)
>     at org.apache.asterix.transaction.management.service.recovery.RecoveryManager.checkpoint(RecoveryManager.java:379)
>     at org.apache.asterix.hyracks.bootstrap.NCApplicationEntryPoint.stop(NCApplicationEntryPoint.java:138)
>     at org.apache.hyracks.control.nc.NodeControllerService.stop(NodeControllerService.java:343)
>     at org.apache.hyracks.control.nc.NCDriver$1.run(NCDriver.java:53)



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