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[MAPREDUCE-4283] Display tail of aggregated logs by default - MapReduce - [issue]
...Similar to the manner in which the nodemanager webUI displays container logs, it would be very useful if the historyserver showed the trailing 4K or so of the aggregated logs with a link to ...
http://issues.apache.org/jira/browse/MAPREDUCE-4283    Author: Jason Lowe, 2014-04-21, 19:17
[MAPREDUCE-4937] MR AM handles an oversized split metainfo file poorly - MapReduce - [issue]
...When an job runs with a split metainfo file that's larger than it has been configured to handle then it just crashes.  This leaves the user with a less-than-ideal debug session since th...
http://issues.apache.org/jira/browse/MAPREDUCE-4937    Author: Jason Lowe, 2014-04-20, 15:09
[MAPREDUCE-5570] Map task attempt with fetch failure has incorrect attempt finish time - MapReduce - [issue]
...If a map task attempt is retroactively failed due to excessive fetch failures reported by reducers then the attempt's finish time is set to the time the task was retroactively failed rather ...
http://issues.apache.org/jira/browse/MAPREDUCE-5570    Author: Jason Lowe, 2014-04-10, 14:11
[MAPREDUCE-5670] CombineFileRecordReader should report progress when moving to the next file - MapReduce - [issue]
...If a combine split consists of many "empty" files (i.e.: no record found by the underlying record reader) then theoretically a task can timeout due to lack of reported progress....
http://issues.apache.org/jira/browse/MAPREDUCE-5670    Author: Jason Lowe, 2014-04-10, 14:11
[MAPREDUCE-5778] JobSummary does not escape newlines in the job name - MapReduce - [issue]
...JobSummary is not escaping newlines in the job name.  This can result in a job summary log entry that spans multiple lines when users are expecting one-job-per-line output....
http://issues.apache.org/jira/browse/MAPREDUCE-5778    Author: Jason Lowe, 2014-04-10, 14:11
[MAPREDUCE-5757] ConcurrentModificationException in JobControl.toList - MapReduce - [issue]
...Despite having the fix for MAPREDUCE-5513 we saw another ConcurrencyModificationException in JobControl, so something there still isn't fixed....
http://issues.apache.org/jira/browse/MAPREDUCE-5757    Author: Jason Lowe, 2014-04-10, 14:11
[MAPREDUCE-4941] Use of org.apache.hadoop.mapred.lib.CombineFileRecordReader requires casting - MapReduce - [issue]
...Unlike its counterpart in org.apache.hadoop.mapreduce.lib.input, the CombineFileRecordReader in mapred requires a user to cast to a RecordReader since the constructor specification says it m...
http://issues.apache.org/jira/browse/MAPREDUCE-4941    Author: Jason Lowe, 2014-04-08, 15:33
[MAPREDUCE-5493] In-memory map outputs can be leaked after shuffle completes - MapReduce - [issue]
...MergeManagerImpl#close adds the contents of inMemoryMergedMapOutputs and inMemoryMapOutputs to a list of map outputs that is subsequently processed, but it does not clear those sets.  T...
http://issues.apache.org/jira/browse/MAPREDUCE-5493    Author: Jason Lowe, 2014-03-19, 18:42
[MAPREDUCE-5265] History server admin service to refresh user and superuser group mappings - MapReduce - [issue]
...The history server needs an admin interface with the ability to1. refresh the super user groups configurations,2. refresh user to group mappings,3. refresh its admin acls,4. get groups given...
http://issues.apache.org/jira/browse/MAPREDUCE-5265    Author: Jason Lowe, 2014-02-24, 20:58
[MAPREDUCE-5746] Job diagnostics can implicate wrong task for a failed job - MapReduce - [issue]
...We've seen a number of cases where the history server is showing the wrong task as the reason a job failed.  For example, "Task task_1383802699973_515536_m_027135 failed 1 times" when s...
http://issues.apache.org/jira/browse/MAPREDUCE-5746    Author: Jason Lowe, 2014-02-13, 14:53
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elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB