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[MAPREDUCE-4401] Enhancements to MapReduce for Windows Server and Windows Azure development and runtime environments - MapReduce - [issue]
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...This JIRA tracks the work that needs to be done on trunk to enable Hadoop to run on Windows Server and Azure environments. This incorporates porting relevant work from the similar effort on ...
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http://issues.apache.org/jira/browse/MAPREDUCE-4401
Author: Bikas Saha,
2013-06-19, 02:44
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[MAPREDUCE-4330] TaskAttemptCompletedEventTransition invalidates previously successful attempt without checking if the newly completed attempt is successful - MapReduce - [issue]
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...The previously completed attempt is removed from successAttemptCompletionEventNoMap and marked OBSOLETE.After that, if the newly completed attempt is successful then it is added to the succe...
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http://issues.apache.org/jira/browse/MAPREDUCE-4330
Author: Bikas Saha,
2013-04-15, 23:19
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[MAPREDUCE-5115] MR app master may try to assign a reduce priority container to a map - MapReduce - [issue]
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...ScheduledRequests.assign() checks reduces.isEmpty() and releases REDUCE priority containers. But it could have received more REDUCE priority containers than reduces.size() in which case it w...
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http://issues.apache.org/jira/browse/MAPREDUCE-5115
Author: Bikas Saha,
2013-03-28, 21:43
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[MAPREDUCE-5107] MR AM needs to be able to handle unavailable HDFS - MapReduce - [issue]
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...Stuff like not starting tasks when HDFS is unavailable. Not terminating tasks that are spinning on HDFS to become available. These features exist in branch-1 JT. Some of this may already be ...
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http://issues.apache.org/jira/browse/MAPREDUCE-5107
Author: Bikas Saha,
2013-03-27, 18:34
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RE: [Vote] Merge branch-trunk-win to trunk - MapReduce - [mail # dev]
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...That's sounds like a reasonable approach. Like you say below, we need to ensure is that the Java side of OS specific optimizations is generic and wont need drastic surgery when that optimiza...
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Author: Bikas Saha,
2013-03-01, 17:55
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[MAPREDUCE-4892] CombineFileInputFormat node input split can be skewed on small clusters - MapReduce - [issue]
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...The CombineFileInputFormat split generation logic tries to group blocks by node in order to create splits. It iterates through the nodes and creates splits on them until there aren't enough ...
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http://issues.apache.org/jira/browse/MAPREDUCE-4892
Author: Bikas Saha,
2013-02-28, 13:20
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[MAPREDUCE-4893] MR AppMaster can do sub-optimal assignment of containers to map tasks leading to poor node locality - MapReduce - [issue]
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...Say the MR AppMaster asks the RM for 3 containers on nodes n1, n2 and n3. There are 10 node n1-n10 in the same rack. The RM can give it allocated containers in the list order n5, n2, n1. The...
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http://issues.apache.org/jira/browse/MAPREDUCE-4893
Author: Bikas Saha,
2013-02-15, 13:10
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[MAPREDUCE-4671] AM does not tell the RM about container requests that are no longer needed - MapReduce - [issue]
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...Say the AM wanted a container at hosts h1, h2, h3. After getting a container at h1 it should tell RM that it no longer needs containers at h2, h3. Otherwise on the RM h2, h3 remain valid all...
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http://issues.apache.org/jira/browse/MAPREDUCE-4671
Author: Bikas Saha,
2013-02-09, 12:40
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RE: How to compile the JobTracker.java - MapReduce - [mail # dev]
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...The scheduling and resource management parts of the JobTracker have been put in the ResourceManager. The Map Reduce job history in the JobHistoryServer. Each MR job is managed by its own YAR...
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Author: Bikas Saha,
2012-12-18, 17:32
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[MAPREDUCE-4436] AppRejectedTransition does not unregister app from master service and scheduler - MapReduce - [issue]
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...AttemptStartedTransition() adds the app to the ApplicationMasterService and scheduler. when the scheduler rejects the app then AppRejectedTransition() forgets to unregister it from the Appli...
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http://issues.apache.org/jira/browse/MAPREDUCE-4436
Author: Bikas Saha,
2012-10-10, 00:57
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