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MAPREDUCE-6070. yarn.app.am.resource.mb/cpu-vcores affects uber mode but is not documented. Contributed by Tsuyoshi OZAWA

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Jason Lowe 2014-09-11 16:19:23 +00:00
parent 4be95175cd
commit 9e28e089c6
2 changed files with 9 additions and 1 deletions
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3
hadoop-mapreduce-project/CHANGES.txt
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@ -279,6 +279,9 @@ Release 2.6.0 - UNRELEASED
MAPREDUCE-6075. HistoryServerFileSystemStateStore can create zero-length MAPREDUCE-6075. HistoryServerFileSystemStateStore can create zero-length
files (jlowe) files (jlowe)
MAPREDUCE-6070. yarn.app.am.resource.mb/cpu-vcores affects uber mode but
is not documented (Tsuyoshi OZAWA via jlowe)
Release 2.5.1 - UNRELEASED Release 2.5.1 - UNRELEASED
INCOMPATIBLE CHANGES INCOMPATIBLE CHANGES

7
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
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@ -508,7 +508,12 @@
<description>Whether to enable the small-jobs "ubertask" optimization, <description>Whether to enable the small-jobs "ubertask" optimization,
which runs "sufficiently small" jobs sequentially within a single JVM. which runs "sufficiently small" jobs sequentially within a single JVM.
"Small" is defined by the following maxmaps, maxreduces, and maxbytes "Small" is defined by the following maxmaps, maxreduces, and maxbytes
settings. Users may override this value. settings. Note that configurations for application masters also affect
the "Small" definition - yarn.app.mapreduce.am.resource.mb must be
larger than both mapreduce.map.memory.mb and mapreduce.reduce.memory.mb,
and yarn.app.mapreduce.am.resource.cpu-vcores must be larger than
both mapreduce.map.cpu.vcores and mapreduce.reduce.cpu.vcores to enable
ubertask. Users may override this value.
</description> </description>
</property> </property>