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https://issues.apache.org/jira/browse/NIFI-2452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15406033#comment-15406033
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ASF subversion and git services commented on NIFI-2452:
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Commit e9b87dd73436b1659b1fddcc400e7248bc00f1ee in nifi's branch
refs/heads/master from [~markap14]
[ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=e9b87dd ]
NIFI-2452: Ensure that we do not close Index Readers that are still in use
> Provenance Repository's Index Readers can be prematurely closed
> ---------------------------------------------------------------
>
> Key: NIFI-2452
> URL: https://issues.apache.org/jira/browse/NIFI-2452
> Project: Apache NiFi
> Issue Type: Sub-task
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Joseph Witt
> Priority: Blocker
> Fix For: 1.0.0
>
>
> I occasionally see when I run Provenance queries against an active provenance
> repository that the JVM will crash, writing out an hs_err_pid_XXX.log file.
> This appears to be related to
> https://issues.apache.org/jira/browse/LUCENE-7183 which indicates that it's
> caused by using a closed IndexReader.
> Adding to description from nice Github comments from mark:
> Ensure that we keep track of how many references we have to each lucene
> searcher and only close the underlying index reader if there are no
> references to the searcher. Also updated to prefer newer provenance events
> over older provenance events, and calculate FlowFile lineage based on an
> event id instead of a FlowFile UUID, as it's much more efficient
> In resolving the JIRA also cleaned up logic for handling heartbeat messages
> where a few states weren't accounted for leading to an incorrect accounting
> of heartbeats.
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