Nico Kruber created FLINK-9878:
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Summary: 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: 1.5.1, 1.5.0, 1.6.0
Reporter: Nico Kruber
Assignee: Nico Kruber
Fix For: 1.5.2, 1.6.0
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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