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Weihua Hu commented on FLINK-32980: ----------------------------------- [~Zhanghao Chen] Thanks for reporting this. you are assigned > Support env.java.opts.all & env.java.opts.cli config for starting Session > cluster CLIs > -------------------------------------------------------------------------------------- > > Key: FLINK-32980 > URL: https://issues.apache.org/jira/browse/FLINK-32980 > Project: Flink > Issue Type: Improvement > Components: Command Line Client, Deployment / Scripts > Affects Versions: 1.18.0 > Reporter: Zhanghao Chen > Priority: Minor > Fix For: 1.19.0 > > > *Problem* > The following configs are supposed to be supported: > |h5. env.java.opts.all|(none)|String|Java options to start the JVM of all > Flink processes with.| > |h5. env.java.opts.client|(none)|String|Java options to start the JVM of the > Flink Client with.| > However, the two configs do not take effect for starting Flink session > clusters using kubernetes-session.sh and yarn-session.sh. This can lead to > problems in complex production envs. For example, in my company, some nodes > are IPv6-only, and the connection between Flink client and K8s/YARN control > plane is via a domain name whose backend is on IPv4/v6 dual stack, and the > JVM arg -Djava.net.preferIPv6Addresses=true needs to be set to make Java > connect to IPv6 addresses in favor of IPv4 ones otherwise the K8s/YARN > control plane is inaccessible. > > *Proposal* > The fix is straight-forward, simply apply the following changes to the > session scripts: > ` > FLINK_ENV_JAVA_OPTS="${FLINK_ENV_JAVA_OPTS} ${FLINK_ENV_JAVA_OPTS_CLI}" > exec $JAVA_RUN $JVM_ARGS $FLINK_ENV_JAVA_OPTS xxx > ` -- This message was sent by Atlassian Jira (v8.20.10#820010)