Two things. mapred in the past did not echo its command before running, neither does hdfs, only yarn seems to. I would prefer to see this removed.

Also I see that we tag all other commands with this -Dproc_ also. But I could not find any documentation on why, and no use of these values in the code. Is this for monitoring or something?

-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12515967/MAPREDUCE-3918.patch
against trunk revision .

+1 @author. The patch does not contain any @author tags.

-1 tests included. The patch doesn't appear to include any new or modified tests.
Please justify why no new tests are needed for this patch.
Also please list what manual steps were performed to verify this patch.

+1 javadoc. The javadoc tool did not generate any warning messages.

+1 javac. The applied patch does not increase the total number of javac compiler warnings.

+1 eclipse:eclipse. The patch built with eclipse:eclipse.

+1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9) warnings.

+1 release audit. The applied patch does not increase the total number of release audit warnings.

+1 core tests. The patch passed unit tests in .

+1 contrib tests. The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1927//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1927//console

This message is automatically generated.

No tests required for this script change.

In the past, the -Dproc_historyserver was the first argument on the
command line for monitoring purposes. This allows quick and easy determination of what processes are running using ps on the command line.

Uploading patch reflecting the intent of MAPREDUCE-3866

Patch also addresses Bobby's comment

+1 I just commited this to trunk and branch-0.23

Thanks bobby.

Integrated in Hadoop-Common-0.23-Commit #590 (See https://builds.apache.org/job/Hadoop-Common-0.23-Commit/590/)
svn merge -c 1293469 trunk ot branch-0.23 FIXES MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293470)

Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293470
Files :

• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Hdfs-trunk-Commit #1850 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1850/)
MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293469)

Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293469
Files :

• /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/trunk/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Common-trunk-Commit #1776 (See https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1776/)
MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293469)

Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293469
Files :

• /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/trunk/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Hdfs-0.23-Commit #578 (See https://builds.apache.org/job/Hadoop-Hdfs-0.23-Commit/578/)
svn merge -c 1293469 trunk ot branch-0.23 FIXES MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293470)

Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293470
Files :

• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Mapreduce-trunk-Commit #1787 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1787/)
MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293469)

Result = ABORTED
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293469
Files :

• /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/trunk/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Mapreduce-0.23-Commit #593 (See https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Commit/593/)
svn merge -c 1293469 trunk ot branch-0.23 FIXES MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293470)

Result = ABORTED
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293470
Files :

• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Hdfs-trunk #966 (See https://builds.apache.org/job/Hadoop-Hdfs-trunk/966/)
MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293469)

Result = FAILURE
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293469
Files :

• /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/trunk/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Hdfs-0.23-Build #179 (See https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/179/)
svn merge -c 1293469 trunk ot branch-0.23 FIXES MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293470)

Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293470
Files :

• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Mapreduce-0.23-Build #207 (See https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Build/207/)
svn merge -c 1293469 trunk ot branch-0.23 FIXES MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293470)

Result = FAILURE
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293470
Files :

• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/bin/mapred

Integrated in Hadoop-Mapreduce-trunk #1001 (See https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1001/)
MAPREDUCE-3918 proc_historyserver no longer in command line arguments for HistoryServer (Jon Eagles via bobby) (Revision 1293469)

Result = SUCCESS
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1293469
Files :

• /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
• /hadoop/common/trunk/hadoop-mapreduce-project/bin/mapred