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[MAPREDUCE-3979] DelegationTokens will be renewed forever if multiple jobs share tokens and the first one sets JOB_CANCEL_DELEGATION_TOKEN to false - MapReduce - [issue]
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...The first Job/App to register a token is the one which DelegationTokenRenewer associates with a a specific Token. An attempt to remove/cancel these shared tokens by subsequent jobs doesn't w...
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http://issues.apache.org/jira/browse/MAPREDUCE-3979
Author: Siddharth Seth,
2012-03-07, 01:42
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[MAPREDUCE-3905] Allow per job log aggregation configuration - MapReduce - [issue]
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...Currently, if log aggregation is enabled for a cluster - logs for all jobs will be aggregated - leading to a whole bunch of files on hdfs which users may not want.Users should be able to con...
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http://issues.apache.org/jira/browse/MAPREDUCE-3905
Author: Siddharth Seth,
2012-03-05, 22:15
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[MAPREDUCE-3710] last split generated by FileInputFormat.getSplits may not have the best locality - MapReduce - [issue]
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...The last split generated by FileInputFormat.getSplits considers blkLocations.length-1 to be the hosts for the split.The last split may be larger than the rest (SPLIT_SLOP=1.1 by default) - i...
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http://issues.apache.org/jira/browse/MAPREDUCE-3710
Author: Siddharth Seth,
2012-03-05, 02:49
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[MAPREDUCE-3511] Counters occupy a good part of AM heap - MapReduce - [issue]
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...Per task counters seem to be occupying a good part of an AMs heap. Looks like more than 50% of what's used by a TaskAttemptImpl object.This could be optimized by interning strings or possibl...
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http://issues.apache.org/jira/browse/MAPREDUCE-3511
Author: Siddharth Seth,
2012-03-05, 02:49
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[MAPREDUCE-3901] lazy load JobHistory Task and TaskAttempt details - MapReduce - [issue]
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...The job history UI and MRClientProtocol calls routed via JobHistory are very slow for large jobs. Some of this time is spent parsing the history file. A good chunk is spent pre-creating lots...
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http://issues.apache.org/jira/browse/MAPREDUCE-3901
Author: Siddharth Seth,
2012-03-04, 00:29
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[MAPREDUCE-3298] Improvements to the aggregated log format - MapReduce - [issue]
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...allow easier access to different log types. store information about containers which may have been skipped because of the aggregation policy. add a comparatoretc....
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http://issues.apache.org/jira/browse/MAPREDUCE-3298
Author: Siddharth Seth,
2012-02-26, 05:44
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[MAPREDUCE-3398] Log Aggregation broken in Secure Mode - MapReduce - [issue]
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...Log aggregation in secure mode does not work with MAPREDUCE-2977. The nodemanager relies on the users credentials to write out logs to HDFS. These credentials are currently cancelled once a ...
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http://issues.apache.org/jira/browse/MAPREDUCE-3398
Author: Siddharth Seth,
2012-02-26, 05:43
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[MAPREDUCE-3489] EventDispatcher should have a call-back on errors for aiding tests - MapReduce - [issue]
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...If one of the dispatched events generates an exception - the dispatcher kills the JVM via a System.exit. Unit tests end up not running - but they don't fail either.TestTaskAttempt is current...
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http://issues.apache.org/jira/browse/MAPREDUCE-3489
Author: Siddharth Seth,
2012-02-26, 05:30
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[MAPREDUCE-3711] AppMaster recovery for Medium to large jobs take long time - MapReduce - [issue]
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...Reported by Karam Singhyarn.resourcemanager.am.max-retries=2Ran test cases with sort job on 350 scale having 16800 maps and 680 reduces -:1. After 70 secs of Job Sumbission Am is killed usin...
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http://issues.apache.org/jira/browse/MAPREDUCE-3711
Author: Siddharth Seth,
2012-02-05, 21:26
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[MAPREDUCE-3640] AMRecovery should pick completed task form partial JobHistory files - MapReduce - [issue]
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...Currently, if the JobHistory file has a partial record, AMRecovery will start from scratch. This will become more relevant after MAPREDUCE-3512....
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http://issues.apache.org/jira/browse/MAPREDUCE-3640
Author: Siddharth Seth,
2012-02-02, 14:19
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