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Hudson commented on MAPREDUCE-6070:
-----------------------------------
SUCCESS: Integrated in Hadoop-Hdfs-trunk #1869 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1869/])
MAPREDUCE-6070. yarn.app.am.resource.mb/cpu-vcores affects uber mode but is not documented.
Contributed by Tsuyoshi OZAWA (jlowe: rev 9e28e089c6bcb0b264751bdfa1f994ce002ef2de)
* hadoop-mapreduce-project/CHANGES.txt
* hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
> yarn.app.am.resource.mb/cpu-vcores affects uber mode but is not documented
> --------------------------------------------------------------------------
>
> Key: MAPREDUCE-6070
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6070
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: documentation
> Affects Versions: 2.4.0, 2.5.0
> Reporter: Tsuyoshi OZAWA
> Assignee: Tsuyoshi OZAWA
> Priority: Trivial
> Fix For: 2.6.0
>
> Attachments: MAPREDUCE-6070.2.patch, YARN-2078.1.patch
>
>
> We should document the condition when uber mode is enabled. Currently, users need to
read following code to understand the condition.
> {code}
> boolean smallMemory =
> ( (Math.max(conf.getLong(MRJobConfig.MAP_MEMORY_MB, 0),
> conf.getLong(MRJobConfig.REDUCE_MEMORY_MB, 0))
> <= sysMemSizeForUberSlot)
> || (sysMemSizeForUberSlot == JobConf.DISABLED_MEMORY_LIMIT));
> boolean smallCpu =
> Math.max(
> conf.getInt(
> MRJobConfig.MAP_CPU_VCORES,
> MRJobConfig.DEFAULT_MAP_CPU_VCORES),
> conf.getInt(
> MRJobConfig.REDUCE_CPU_VCORES,
> MRJobConfig.DEFAULT_REDUCE_CPU_VCORES))
> <= sysCPUSizeForUberSlot
> {code}
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