MAPREDUCE-7062. Update mapreduce.job.tags description for making use for ATSv2 
purpose. Contributed by Charan Hebri.


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/6cc59a09
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/6cc59a09
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/6cc59a09

Branch: refs/heads/HDFS-7240
Commit: 6cc59a09e7330dc893b386d84c8f2aa86c02eace
Parents: c048711
Author: Rohith Sharma K S <rohithsharm...@apache.org>
Authored: Wed Apr 11 09:45:39 2018 +0530
Committer: Rohith Sharma K S <rohithsharm...@apache.org>
Committed: Wed Apr 11 09:45:39 2018 +0530

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 .../src/main/resources/mapred-default.xml                      | 6 ++++++
 1 file changed, 6 insertions(+)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/6cc59a09/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
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diff --git 
a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
 
b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
index cf8be33..d47c0ff 100644
--- 
a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
+++ 
b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
@@ -1045,6 +1045,12 @@
     <value></value>
     <description> Tags for the job that will be passed to YARN at submission
       time. Queries to YARN for applications can filter on these tags.
+      If these tags are intended to be used with The YARN Timeline Service v.2,
+      prefix them with the appropriate tag names for flow name, flow version 
and
+      flow run id. Example:
+      timeline_flow_name_tag:foo,
+      timeline_flow_version_tag:3df8b0d6100530080d2e0decf9e528e57c42a90a,
+      timeline_flow_run_id_tag:1465246348599
     </description>
   </property>
 


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