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[MAPREDUCE-3511] Counters occupy a good part of AM heap - MapReduce - [issue]
...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...
http://issues.apache.org/jira/browse/MAPREDUCE-3511    Author: Siddharth Seth, 2012-03-05, 02:49
[MAPREDUCE-3901] lazy load JobHistory Task and TaskAttempt details - MapReduce - [issue]
...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...
http://issues.apache.org/jira/browse/MAPREDUCE-3901    Author: Siddharth Seth, 2012-03-04, 00:29
[MAPREDUCE-3298] Improvements to the aggregated log format - MapReduce - [issue]
...allow easier access to different log types. store information about containers which may have been skipped because of the aggregation policy. add a comparatoretc....
http://issues.apache.org/jira/browse/MAPREDUCE-3298    Author: Siddharth Seth, 2012-02-26, 05:44
[MAPREDUCE-3398] Log Aggregation broken in Secure Mode - MapReduce - [issue]
...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 ...
http://issues.apache.org/jira/browse/MAPREDUCE-3398    Author: Siddharth Seth, 2012-02-26, 05:43
[MAPREDUCE-3489] EventDispatcher should have a call-back on errors for aiding tests - MapReduce - [issue]
...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...
http://issues.apache.org/jira/browse/MAPREDUCE-3489    Author: Siddharth Seth, 2012-02-26, 05:30
[MAPREDUCE-3711] AppMaster recovery for Medium to large jobs take long time - MapReduce - [issue]
...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...
http://issues.apache.org/jira/browse/MAPREDUCE-3711    Author: Siddharth Seth, 2012-02-05, 21:26
[MAPREDUCE-3640] AMRecovery should pick completed task form partial JobHistory files - MapReduce - [issue]
...Currently, if the JobHistory file has a partial record, AMRecovery will start from scratch. This will become more relevant after MAPREDUCE-3512....
http://issues.apache.org/jira/browse/MAPREDUCE-3640    Author: Siddharth Seth, 2012-02-02, 14:19
[MAPREDUCE-3764] AllocatedGB etc metrics incorrect if min-allocation-mb isn't a multiple of 1GB - MapReduce - [issue]
...MutableGaugeInt incremented as allocatedGB.incr(res.getMemory() / GB * containers);Setting yarn.scheduler.capacity.minimum-allocation-mb to 1536 - each increment is counted as 1GB.Trying to ...
http://issues.apache.org/jira/browse/MAPREDUCE-3764    Author: Siddharth Seth, 2012-01-31, 14:11
[MAPREDUCE-3713] Incorrect headroom reported to jobs - MapReduce - [issue]
...With multiple jobs submitted per user, and multiple users submitting jobs - the headroom reported to the AppMasters is incorrect (very high).Leads to a deadlock - reduces started, map tasks ...
http://issues.apache.org/jira/browse/MAPREDUCE-3713    Author: Siddharth Seth, 2012-01-26, 13:23
[MAPREDUCE-3194] "mapred mradmin" command is broken in mrv2 - MapReduce - [issue]
...$mapred  mradmin  Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/mapred/tools/MRAdminCaused by: java.lang.ClassNotFoundException: org.apache.hadoop.ma...
http://issues.apache.org/jira/browse/MAPREDUCE-3194    Author: Siddharth Seth, 2012-01-26, 13:23
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