Vinod Kumar Vavilapalli
Arun C Murthy
Robert Joseph Evans
Vinay Kumar Thota
Joydeep Sen Sarma
Bhallamudi Venkata Siva K...
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[MAPREDUCE-4166] Implement renewal / cancellation of Delegation Tokens
...Currently, delegation tokens issues by the RM and History server cannot be renewed or cancelled. This needs to be implemented....
, 2012-04-18, 23:42
[MAPREDUCE-3978] getTotalMaps, getTotalReduces is incorrect for JobHistory PartialJob
...These are currently returning the number of completed map / reduce tasks - instead of the total. The information doesn't make it over to the history server via the job history file name....
, 2012-03-08, 18:16
[MAPREDUCE-3961] Map/ReduceSlotMillis computation incorrect
...Map/ReduceSlot millis are currently computed based on a fixed container size. They should instead be based on the minimum container size offered by the cluster.There's another jira to rename...
, 2012-03-07, 13:25
[MAPREDUCE-3979] DelegationTokens will be renewed forever if multiple jobs share tokens and the first one sets JOB_CANCEL_DELEGATION_TOKEN to false
...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...
, 2012-03-07, 01:42
[MAPREDUCE-3905] Allow per job log aggregation configuration
...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...
, 2012-03-05, 22:15
[MAPREDUCE-3710] last split generated by FileInputFormat.getSplits may not have the best locality
...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...
, 2012-03-05, 02:49
[MAPREDUCE-3511] Counters occupy a good part of AM heap
...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...
, 2012-03-05, 02:49
[MAPREDUCE-3901] lazy load JobHistory Task and TaskAttempt details
...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...
, 2012-03-04, 00:29
[MAPREDUCE-3298] Improvements to the aggregated log format
...allow easier access to different log types. store information about containers which may have been skipped because of the aggregation policy. add a comparatoretc....
, 2012-02-26, 05:44
[MAPREDUCE-3398] Log Aggregation broken in Secure Mode
...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 ...
, 2012-02-26, 05:43
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