YARN容器内存未反映在Java Xmx设置中 [英] YARN container memory not reflected in java Xmx setting

问题描述

请帮助我理解我的理解或配置中的错误.

Please help me to understand the error in either my understanding or configuration.

我在YARN上运行Spark，并在yarn-site.xml中将最小容器内存分配设置为8GB:

I am running Spark on YARN, and have set the minimum container memory allocation to 8GB in yarn-site.xml:

<property>
    <name>yarn.scheduler.minimum-allocation-mb</name>
    <value>8192</value>
</property>

我可以在Resource Manager UI中看到此设置:

I can see this setting reflected in the Resource Manager UI:

但是，当我在服务器上ps容器的Java进程时，最大堆大小设置为1024MB，即-Xmx1024m:

However, when I ps the container's java process on the server the max heap size is set to 1024MB i.e. -Xmx1024m:

root 542 535 1 16:18 ? 00:05:58 /usr/lib/jvm/jre-1.8.0-openjdk/bin/java -server -Xmx1024m -Djava.io.tmpdir=/tmp/hadoop-root/nm-local-dir/usercache/root/appcache/application_1583021363029_0011/container_1583021363029_0011_03_000003/tmp ...

容器的Java进程ID为 542 :

The container's java process id is 542 :

Logs for container_1583021363029_0011_03_000003

0/03/02 16:18:57 INFO executor.CoarseGrainedExecutorBackend: Started daemon with process name: [e-mail]
20/03/02 16:18:57 INFO util.SignalUtils: Registered signal handler for TERM
20/03/02 16:18:57 INFO util.SignalUtils: Registered signal handler for HUP
20/03/02 16:18:57 INFO util.SignalUtils: Registered signal handler for INT

推荐答案

Java opts和YARN容器的大小是不同的属性

Java opts and YARN container sizes are distinct properties

最大堆大小设置可以在集群模式下使用 spark.driver.memory 设置，并在客户端模式下通过-driver-memory 命令行选项设置

Maximum heap size settings can be set with spark.driver.memory in the cluster mode and through the --driver-memory command line option in the client mode

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