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https://issues.apache.org/jira/browse/FLINK-18702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17173144#comment-17173144
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Jun Qin commented on FLINK-18702:
---------------------------------
This has been merged into master. See:
[https://github.com/apache/flink/pull/13068]
Closing now.
> Flink elasticsearch connector leaks threads and classloaders thereof
> --------------------------------------------------------------------
>
> Key: FLINK-18702
> URL: https://issues.apache.org/jira/browse/FLINK-18702
> Project: Flink
> Issue Type: Bug
> Components: Connectors / ElasticSearch
> Affects Versions: 1.10.0, 1.10.1
> Reporter: Jun Qin
> Assignee: Jun Qin
> Priority: Major
>
> Flink elasticsearch connector leaking threads and classloaders thereof. This
> results in OOM Metaspace when ES sink fails and restarted many times.
> This issue is visible in Flink 1.10 but not in 1.11 because Flink 1.11 does
> not create new class loaders in case of recoveries (FLINK-16408)
>
> Reproduction:
> * Start a job with ES sink in a Flink 1.10 cluster, without starting the ES
> cluster.
>
>
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