Daniel Kimsey created ZOOKEEPER-4391:
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Summary: Unable to use newer JVM memory settings as Xmx overrides
Key: ZOOKEEPER-4391
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4391
Project: ZooKeeper
Issue Type: Improvement
Components: scripts
Reporter: Daniel Kimsey
The Zookeeper environment initialization scripts
[forcibly|https://gitbox.apache.org/repos/asf?p=zookeeper.git;a=blob;f=bin/zkEnv.sh;h=8d93a50c7c0cedee6a23746362e7b6fff96ad61c;hb=refs/heads/master#l144]
set an {{Xmx}} setting. This is an issue for more flexible configuration JVM
memory options like ({{MaxRAMPercentage}} and {{InitialRAMPercentage}}) as Xmx
overrides them.
Ideally, if SERVER_JVMFLAGS/CLIENT_JVMFLAGS are set, we should not attempt to
modify them as the operator has decided what flags to set. However, this would
be a behavior change, I don't know if the project is interested/willing to do
that. Alternatively, we add a flag to disable the default (current) behavior.
{code:sh}
# default heap for zookeeper server
if [ "$ZK_SKIP_XMX" != "yes" ];
ZK_SERVER_HEAP="${ZK_SERVER_HEAP:-1000}"
export SERVER_JVMFLAGS="-Xmx${ZK_SERVER_HEAP}m $SERVER_JVMFLAGS"
fi
{code}
Repeat for CLIENT_JVMFLAGS.
Thank you
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