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https://issues.apache.org/jira/browse/NIFI-2452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15404632#comment-15404632
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ASF GitHub Bot commented on NIFI-2452:
--------------------------------------
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/771#discussion_r73220319
--- Diff:
nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/FlowController.java
---
@@ -16,7 +16,38 @@
*/
package org.apache.nifi.controller;
-import com.sun.jersey.api.client.ClientHandlerException;
--- End diff --
@joewitt this change was due to a bug that I ran into when testing this PR.
The bug was preventing me from moving forward, and was a rather trivial fix, so
I just included it in the PR. I could have created a separate JIRA and PR but
since it would have blocked this PR it seemed more prudent to just roll it in.
> 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
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