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https://issues.apache.org/jira/browse/DERBY-5031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12994140#comment-12994140
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Myrna van Lunteren commented on DERBY-5031:
-------------------------------------------
Is this a duplicate of DERBY-5030? Same stack...
> Exception in thread "index-stat-thread" java.lang.NullPointerException while
> calling ControlRow.getControlRowForPage(Unknown Source)
> ------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-5031
> URL: https://issues.apache.org/jira/browse/DERBY-5031
> Project: Derby
> Issue Type: Bug
> Components: Store
> Affects Versions: 10.8.0.0
> Environment: Sun Microsystems Inc.
> 1.6.0_181069888
> 2011-02-11 18:00:25 MET
> Reporter: Mike Matrigali
>
> Nightly tests failed across many platforms with a number of failures. I
> noticed this stack from the background
> istats threa hanging out at the end
> of the output file in a some of the cases. I don't know if this stack caused
> the errors or not. It may just be a bad
> error handling on shutdown. It would be good to understand why it is printed
> when/where it is.
> FAILURES!!!
> Tests run: 13369, Failures: 3, Errors: 1
> ------------------------------
> Exception in thread "index-stat-thread" java.lang.NullPointerException
> at
> org.apache.derby.impl.store.access.btree.ControlRow.getControlRowForPage(Unknown
> Source)
> at org.apache.derby.impl.store.access.btree.ControlRow.get(Unknown
> Source)
> at org.apache.derby.impl.store.access.btree.ControlRow.get(Unknown
> Source)
> at
> org.apache.derby.impl.store.access.btree.BTreeScan.reposition(Unknown Source)
> at
> org.apache.derby.impl.store.access.btree.BTreeForwardScan.fetchRows(Unknown
> Source)
> at
> org.apache.derby.impl.store.access.btree.BTreeScan.fetchNextGroup(Unknown
> Source)
> at
> org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl$KeyComparator.fetchRows(Unknown
> Source)
> at
> org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.updateIndexStatsMinion(Unknown
> Source)
> at
> org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.generateStatistics(Unknown
> Source)
> at
> org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.run(Unknown
> Source)
> at java.lang.Thread.run(Thread.java:619)
> Here are some links from sun nightly tests runs showing this error, it
> happened in a lot of the runs but not all the ones I looked at.
> http://dbtg.foundry.sun.com/derby/test/Daily/jvm1.6/testing/testlog/lin/1069888-suitesAll_diff.txt
> http://dbtg.foundry.sun.com/derby/test/Daily/jvm1.6/testing/testlog/sles/1069888-suitesAll_diff.txt
> http://dbtg.foundry.sun.com/derby/test/Daily/jvm1.6/testing/testlog/sol/1069888-suitesAll_diff.txt
> http://dbtg.foundry.sun.com/derby/test/Daily/jvm1.6/testing/testlog/sol32/1069888-suitesAll_diff.txt
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