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https://issues.apache.org/jira/browse/DRILL-5083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roman Kulyk updated DRILL-5083:
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Attachment: Reproduce5083.jpg
> RecordIterator can sometimes restart a query on close
> -----------------------------------------------------
>
> Key: DRILL-5083
> URL: https://issues.apache.org/jira/browse/DRILL-5083
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.8.0
> Reporter: Paul Rogers
> Assignee: Roman Kulyk
> Priority: Minor
> Labels: ready-to-commit
> Fix For: 1.11.0
>
> Attachments: DrillOperatorErrorHandlingRedesign.pdf, Reproduce5083.jpg
>
>
> This one is very confusing...
> In a test with a MergeJoin and external sort, operators are stacked something
> like this:
> {code}
> Screen
> - MergeJoin
> - - External Sort
> ...
> {code}
> Using the injector to force a OOM in spill, the external sort threw a
> UserException up the stack. This was handed by:
> {code}
> IteratorValidatorBatchIterator.next( )
> RecordIterator.clearInflightBatches( )
> RecordIterator.close( )
> MergeJoinBatch.close( )
> {code}
> Which does the following:
> {code}
> // Check whether next() should even have been called in current state.
> if (null != exceptionState) {
> throw new IllegalStateException(
> {code}
> But, the exceptionState is set, so we end up throwing an
> IllegalStateException during cleanup.
> Seems the code should agree: if {{next( )}} will be called during cleanup,
> then {{next( )}} should gracefully handle that case.
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