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From Jonas Krauss <jkraus...@gmail.com>
Subject Passing worker JVM options not working as expected
Date Wed, 18 Nov 2020 16:03:45 GMT
Hi all,

we are running Storm 2.2.0 on openjdk build
1.8.0_272-8u272-b10-0+deb9u1-b10 in a cluster with five supervisors. We are
trying to set individual worker child options for a topology via the Java
Config object like so:

Config conf = new Config();
conf.put(Config.WORKER_CHILDOPTS, "-Xmx%HEAP-MEM%m -XX:+UseG1GC");

Looking at the java processes of the topology on the cluster, we do not see
the JVM options to be present, e.g. the string -XX:+UseG1GC is not found
anywhere in htop. However, when submitting the topology everything seems
fine, as the options are printed from the storm submitter:

13:15:01.939 [main] INFO  o.a.s.StormSubmitter - Submitting topology
test_topology in distributed mode with conf
{...,"worker.childopts":"-Xmx%HEAP-MEM%m
-XX:+UseG1GC",...}

Any idea why this is not working?

Thanks

Jonas

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