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https://issues.apache.org/jira/browse/DERBY-7059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17612556#comment-17612556
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Liam Sharp commented on DERBY-7059:
-----------------------------------
I work with [~dangonz] and can offer a bit more info on this, but not much.
We've since updated our product to run with Java 17.0.2, so the stack trace
looks a bit different now (This is Derby version 10.15.2.0):
{code:java}
java.lang.NullPointerException: Cannot invoke
"org.apache.derby.iapi.sql.execute.ExecutionContext.getExecutionFactory()"
because "<local1>" is null
at
org.apache.derby.iapi.sql.dictionary.IndexRowGenerator.getExecutionFactory(IndexRowGenerator.java:401)
at
org.apache.derby.iapi.sql.dictionary.IndexRowGenerator.getIndexRowTemplate(IndexRowGenerator.java:125)
at
org.apache.derby.iapi.sql.dictionary.IndexRowGenerator.getNullIndexRow(IndexRowGenerator.java:143)
at
org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.updateIndexStatsMinion(IndexStatisticsDaemonImpl.java:479)
at
org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.generateStatistics(IndexStatisticsDaemonImpl.java:354)
at
org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.processingLoop(IndexStatisticsDaemonImpl.java:934)
at
org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.run(IndexStatisticsDaemonImpl.java:850)
at java.base/java.lang.Thread.run(Thread.java:833){code}
this is in the thread named:
{code:java}
derby.index-stat-thread,5,derby.daemons{code}
This isn't something we can reproduce I'm afraid. We've seen this from
customers on the following platforms (as reported by Java):
'Windows 10' Version '10.0' Arch 'amd64'
'Windows Server 2016' Version '10.0' Arch 'amd64'
'Mac OS X' Version '12.2.1' Arch 'x86_64'
> NullPointerException IndexRowGenerator.getExecutionFactory
> ----------------------------------------------------------
>
> Key: DERBY-7059
> URL: https://issues.apache.org/jira/browse/DERBY-7059
> Project: Derby
> Issue Type: Bug
> Components: Store
> Affects Versions: 10.14.2.0
> Reporter: Daniel Gonzalez
> Priority: Major
>
> We have had a couple of customers which have experienced the crash show below
> in the derby.index-stat-thread.
> We can't recreate the issue locally, but what may be the cause of this? Is
> there anything in particular that may be provoking this?
>
> {{java.lang.NullPointerException}}{{at
> org.apache.derby.iapi.sql.dictionary.IndexRowGenerator.getExecutionFactory(Unknown
> Source)}}{{at
> org.apache.derby.iapi.sql.dictionary.IndexRowGenerator.getIndexRowTemplate(Unknown
> Source)}}{{at
> org.apache.derby.iapi.sql.dictionary.IndexRowGenerator.getNullIndexRow(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.processingLoop(Unknown
> Source)}}{{at
> org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.run(Unknown
> Source)}}{{at java.lang.Thread.run(Thread.java:748)}}
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