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https://issues.apache.org/jira/browse/FLINK-9878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann updated FLINK-9878:
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Fix Version/s: (was: 1.6.1)
> IO worker threads BLOCKED on SSL Session Cache while CMS full gc
> ----------------------------------------------------------------
>
> Key: FLINK-9878
> URL: https://issues.apache.org/jira/browse/FLINK-9878
> Project: Flink
> Issue Type: Bug
> Components: Network
> Affects Versions: 1.5.0, 1.5.1, 1.6.0
> Reporter: Nico Kruber
> Assignee: Nico Kruber
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.7.0, 1.6.2, 1.5.5
>
>
> According to https://github.com/netty/netty/issues/832, there is a JDK issue
> during garbage collection when the SSL session cache is not limited. We
> should allow the user to configure this and further (advanced) SSL parameters
> for fine-tuning to fix this and similar issues. In particular, the following
> parameters should be configurable:
> - SSL session cache size
> - SSL session timeout
> - SSL handshake timeout
> - SSL close notify flush timeout
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