Help Center/ MapReduce Service/ Component Operation Guide (LTS) (Paris Region)/ Using Flink/ Flink Configuration Management/ Environment
Updated on 2022-12-14 GMT+08:00
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Environment

Scenario

In scenarios raising special requirements on JVM configuration, users can use configuration items to transfer JVM parameters to the client, JobManager, and TaskManager.

Configuration

Configuration items include JVM parameters.

Table 1 Parameter description

Parameter

Description

Default Value

Mandatory

env.java.opts

JVM parameter, which is transferred to the startup script, JobManager, TaskManager, and Yarn client. For example, transfer remote debugging parameters.

-Xloggc:<LOG_DIR>/gc.log -XX:+PrintGCDetails -XX:-OmitStackTraceInFastThrow -XX:+PrintGCTimeStamps -XX:+PrintGCDateStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=20 -XX:GCLogFileSize=20M -Djdk.tls.ephemeralDHKeySize=2048 -Djava.library.path=${HADOOP_COMMON_HOME}/lib/native -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv6Addresses=false -Dbeetle.application.home.path=/opt/xxx/Bigdata/common/runtime/security/config

No