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https://issues.apache.org/jira/browse/YARN-1912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13963789#comment-13963789
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stanley shi commented on YARN-1912:
---
No, it's not the minumum. On one of my environment which has 32GB mem:
{code}
/opt/jdk1.7.0_15/bin/java -XX:+PrintFlagsFinal -version 2>&1 | grep MaxHeapSize
uintx MaxHeapSize := 8415870976 {product}
{code}
And also some answer from oracle:
{quote}Server JVM heap configuration ergonomics are now the same as the Client,
except that the default maximum heap size for 32-bit JVMs is 1 gigabyte,
corresponding to a physical memory size of 4 gigabytes, and for 64-bit JVMs is
32 gigabytes, corresponding to a physical memory size of 128 gigabytes.
{quote}
http://www.oracle.com/technetwork/java/javase/6u18-142093.html
> ResourceLocalizer started without any jvm memory control
>
>
> Key: YARN-1912
> URL: https://issues.apache.org/jira/browse/YARN-1912
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
>Affects Versions: 2.2.0
>Reporter: stanley shi
>
> In the LinuxContainerExecutor.java#startLocalizer, it does not specify any
> "-Xmx" configurations in the command, this caused the ResourceLocalizer to be
> started with default memory setting.
> In an server-level hardware, it will use 25% of the system memory as the max
> heap size, this will cause memory issue in some cases.
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