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https://issues.apache.org/jira/browse/ZOOKEEPER-4701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhanglu153 updated ZOOKEEPER-4701:
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Description:
After upgrading from version 3.4.14 to version 3.6.4, it was found that other
JVM memory options such as - XX: MaxRAMPercentage cannot be used to control the
memory usage of zookeeper. Upon investigation, it was found that the reason was
due to the addition of a default setting for heap size in the zkEnv.sh script
in version 3.5, with a default value of 1000M.
{code:java}
ZK_SERVER_HEAP="${ZK_SERVER_HEAP:-1000}"
export SERVER_JVMFLAGS="-Xmx${ZK_SERVER_HEAP}m $SERVER_JVMFLAGS"{code}
When the user uses - XX: MaxRAMPercentage to control the memory usage of
zookeeper, it is found that the memory configuration will be overwritten by the
default - Xmx configuration value. This does not meet the memory usage
configuration required by the user.
In [ZOOKEEPER-4391|[ZOOKEEPER-4391] Unable to use newer JVM memory settings as
Xmx overrides - ASF JIRA (apache.org)], it is also proposed to add a flag to
disable the memory configuration behavior by default. This default value can
only be optionally released when users need to use the default heap size
configuration.
was:
After upgrading from version 3.4.14 to version 3.6.4, it was found that other
JVM memory options such as - XX: MaxRAMPercentage cannot be used to control the
memory usage of zookeeper. Upon investigation, it was found that the reason was
due to the addition of a default setting for heap size in the zkEnv.sh script
in version 3.5, with a default value of 1000M.
{code:java}
ZK_SERVER_HEAP="${ZK_SERVER_HEAP:-1000}"
export SERVER_JVMFLAGS="-Xmx${ZK_SERVER_HEAP}m $SERVER_JVMFLAGS"{code}
When the user uses - XX: MaxRAMPercentage to control the memory usage of
zookeeper, it is found that the memory configuration will be overwritten by the
default - Xmx configuration value. This does not meet the memory usage
configuration required by the user.
In Zookeeper-4391, it is also proposed to add a flag to disable the memory
configuration behavior by default. This default value can only be optionally
released when users need to use the default heap size configuration.
> Unable to use other JVM memory options to control zookeeper memory usage.
> -------------------------------------------------------------------------
>
> Key: ZOOKEEPER-4701
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4701
> Project: ZooKeeper
> Issue Type: Improvement
> Components: scripts
> Affects Versions: 3.5.9, 3.5.10, 3.5.0, 3.5.1, 3.5.2, 3.5.3, 3.5.4, 3.6.0,
> 3.6.3, 3.7.0, 3.5.5, 3.5.6, 3.5.7, 3.6.1, 3.5.8, 3.6.2, 3.8.0, 3.7.1, 3.6.4,
> 3.8.1
> Reporter: zhanglu153
> Priority: Minor
> Labels: Zookeeper
>
> After upgrading from version 3.4.14 to version 3.6.4, it was found that other
> JVM memory options such as - XX: MaxRAMPercentage cannot be used to control
> the memory usage of zookeeper. Upon investigation, it was found that the
> reason was due to the addition of a default setting for heap size in the
> zkEnv.sh script in version 3.5, with a default value of 1000M.
> {code:java}
> ZK_SERVER_HEAP="${ZK_SERVER_HEAP:-1000}"
> export SERVER_JVMFLAGS="-Xmx${ZK_SERVER_HEAP}m $SERVER_JVMFLAGS"{code}
> When the user uses - XX: MaxRAMPercentage to control the memory usage of
> zookeeper, it is found that the memory configuration will be overwritten by
> the default - Xmx configuration value. This does not meet the memory usage
> configuration required by the user.
> In [ZOOKEEPER-4391|[ZOOKEEPER-4391] Unable to use newer JVM memory settings
> as Xmx overrides - ASF JIRA (apache.org)], it is also proposed to add a flag
> to disable the memory configuration behavior by default. This default value
> can only be optionally released when users need to use the default heap size
> configuration.
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