Stephan Ewen created FLINK-2343:
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Summary: Change default garbage collector in streaming environments
Key: FLINK-2343
URL: https://issues.apache.org/jira/browse/FLINK-2343
Project: Flink
Issue Type: Improvement
Components: Start-Stop Scripts
Affects Versions: 0.10
Reporter: Stephan Ewen
Assignee: Stephan Ewen
Fix For: 0.10
When starting Flink, we don't pass any particular GC related JVM flags to the
system. That means, it uses the default garbage collectors, which are the bulk
parallel GCs for both old gen and new gen.
For streaming applications, this results in vastly fluctuating latencies.
Latencies are much more constant with either the {{CMS}} or {{G1}} GC.
I propose to make the CMS the default GC for streaming setups.
G1 may become the GC of choice in the future, but fro various articles I found,
it is still somewhat in "beta" status (see for example here:
http://jaxenter.com/kirk-pepperdine-on-the-g1-for-java-9-118190.html )
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