Separate installation of mapreduce libraries from YARN_HOME
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Key: MAPREDUCE-3352
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3352
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2
Affects Versions: 0.23.0
Reporter: Vinod Kumar Vavilapalli
Time and again, I am running into scenarios where I just want to fix bugs in
mapreduce app, replace the mapreduce libraries without bringing down YARN
daemons and/or replacing the YARN RM/NM installation.
Today, we have separate HADOOP_MAPRED_HOME and YARN_HOME, but the installation
directory is the same. We need to separate this.
We will need this eventually anyways, as MR is strictly a user-land library,
just like PIG, HIVE etc.
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