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https://issues.apache.org/jira/browse/HADOOP-5564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12748872#action_12748872
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Edward Capriolo commented on HADOOP-5564:
-----------------------------------------
Steve,
You definitely need this patch with java update 14&15. I have 18.3 and u 15.
There are no surface errors! but my map tasks produced no output! Good thing I
caught it relatively quickly.
> hadoop command uses large JVM heap size
> ---------------------------------------
>
> Key: HADOOP-5564
> URL: https://issues.apache.org/jira/browse/HADOOP-5564
> Project: Hadoop Common
> Issue Type: Bug
> Components: build
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Priority: Blocker
> Fix For: 0.20.0
>
> Attachments: 5564.patch, 5564.trunk.patch, 5564.trunk.patch
>
>
> Command used to determine JAVA_PLATFORM in bin/hadoop command does not set
> the heap size. The command uses default 1GB heap size. The tasks invoking
> hadoop command end up using large heap size in streaming jobs. If the
> maximum memory that can be used by a task is restricted, this could result in
> map/reduce job failures.
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