Author: sandy
Date: Fri Apr 25 21:14:25 2014
New Revision: 1590151

URL: http://svn.apache.org/r1590151
Log:
YARN-483. Improve documentation on log aggregation in yarn-default.xml (Akira 
Ajisaka via Sandy Ryza)

Modified:
    hadoop/common/branches/branch-2/hadoop-yarn-project/CHANGES.txt
    
hadoop/common/branches/branch-2/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml

Modified: hadoop/common/branches/branch-2/hadoop-yarn-project/CHANGES.txt
URL: 
http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-yarn-project/CHANGES.txt?rev=1590151&r1=1590150&r2=1590151&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-yarn-project/CHANGES.txt (original)
+++ hadoop/common/branches/branch-2/hadoop-yarn-project/CHANGES.txt Fri Apr 25 
21:14:25 2014
@@ -43,6 +43,9 @@ Release 2.5.0 - UNRELEASED
 
     YARN-1970. Prepare YARN codebase for JUnit 4.11. (cnauroth)
 
+    YARN-483. Improve documentation on log aggregation in yarn-default.xml
+    (Akira Ajisaka via Sandy Ryza)
+
   OPTIMIZATIONS
 
   BUG FIXES 

Modified: 
hadoop/common/branches/branch-2/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
URL: 
http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml?rev=1590151&r1=1590150&r2=1590151&view=diff
==============================================================================
--- 
hadoop/common/branches/branch-2/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
 (original)
+++ 
hadoop/common/branches/branch-2/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
 Fri Apr 25 21:14:25 2014
@@ -733,7 +733,14 @@
   </property>
 
   <property>
-    <description>Whether to enable log aggregation</description>
+    <description>Whether to enable log aggregation. Log aggregation collects
+      each container's logs and moves these logs onto a file-system, for e.g.
+      HDFS, after the application completes. Users can configure the
+      "yarn.nodemanager.remote-app-log-dir" and
+      "yarn.nodemanager.remote-app-log-dir-suffix" properties to determine
+      where these logs are moved to. Users can access the logs via the
+      Application Timeline Server.
+    </description>
     <name>yarn.log-aggregation-enable</name>
     <value>false</value>
   </property>


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