Author: acmurthy
Date: Fri Jul 5 03:23:29 2013
New Revision: 1499906
URL: http://svn.apache.org/r1499906
Log:
MAPREDUCE-5368. Reduce memory footprint of JobTracker by using non-default
values for hash-tables to store Locality and Avataar for TaskAttempts.
Contributed by zhaoyunjiong.
Modified:
hadoop/common/branches/branch-1/CHANGES.txt
hadoop/common/branches/branch-1/src/mapred/org/apache/hadoop/mapred/TaskInProgress.java
Modified: hadoop/common/branches/branch-1/CHANGES.txt
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/branch-1/CHANGES.txt?rev=1499906&r1=1499905&r2=1499906&view=diff
==============================================================================
--- hadoop/common/branches/branch-1/CHANGES.txt (original)
+++ hadoop/common/branches/branch-1/CHANGES.txt Fri Jul 5 03:23:29 2013
@@ -120,6 +120,10 @@ Release 1.2.1 - Unreleased
MAPREDUCE-5375. Use short name for renewing delegation tokens. (Venkat
Ranganathan via acmurthy)
+ MAPREDUCE-5368. Reduce memory footprint of JobTracker by using non-default
+ values for hash-tables to store Locality and Avataar for TaskAttempts.
+ (zhaoyunjiong via acmurthy)
+
Release 1.2.0 - 2013.05.05
INCOMPATIBLE CHANGES
Modified:
hadoop/common/branches/branch-1/src/mapred/org/apache/hadoop/mapred/TaskInProgress.java
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/branch-1/src/mapred/org/apache/hadoop/mapred/TaskInProgress.java?rev=1499906&r1=1499905&r2=1499906&view=diff
==============================================================================
---
hadoop/common/branches/branch-1/src/mapred/org/apache/hadoop/mapred/TaskInProgress.java
(original)
+++
hadoop/common/branches/branch-1/src/mapred/org/apache/hadoop/mapred/TaskInProgress.java
Fri Jul 5 03:23:29 2013
@@ -133,9 +133,9 @@ class TaskInProgress {
private String user;
private Map<TaskAttemptID, Locality> taskLocality =
- new ConcurrentHashMap<TaskAttemptID, Locality>();
+ new ConcurrentHashMap<TaskAttemptID, Locality>(4, 0.75f, 2);
private Map<TaskAttemptID, Avataar> taskAvataar =
- new ConcurrentHashMap<TaskAttemptID, Avataar>();
+ new ConcurrentHashMap<TaskAttemptID, Avataar>(4, 0.75f, 2);
/**
* Constructor for MapTask
