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https://issues.apache.org/jira/browse/MAPREDUCE-5608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17630602#comment-17630602
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ASF GitHub Bot commented on MAPREDUCE-5608:
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ashutoshcipher commented on code in PR #5014:
URL: https://github.com/apache/hadoop/pull/5014#discussion_r1017073570
##########
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java:
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@@ -577,6 +577,8 @@ public interface MRJobConfig {
public static final String MAX_SHUFFLE_FETCH_HOST_FAILURES =
"mapreduce.reduce.shuffle.max-host-failures";
public static final int DEFAULT_MAX_SHUFFLE_FETCH_HOST_FAILURES = 5;
+ String SHUFFLE_INDEX_CACHE = "mapreduce.reduce.shuffle.indexcache.mb";
Review Comment:
yes, makes sense.
> Replace and deprecate mapred.tasktracker.indexcache.mb
> ------------------------------------------------------
>
> Key: MAPREDUCE-5608
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5608
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 2.2.0
> Reporter: Sandy Ryza
> Assignee: Ashutosh Gupta
> Priority: Major
> Labels: BB2015-05-TBR, configuration, newbie,
> pull-request-available
> Attachments: MAPREDUCE-5608-002.patch, MAPREDUCE-5608.003.patch,
> MAPREDUCE-5608.patch
>
>
> In MR2 mapred.tasktracker.indexcache.mb still works for configuring the size
> of the shuffle service index cache. As the tasktracker no longer exists, we
> should replace this with something like mapreduce.shuffle.indexcache.mb.
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