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[MAPREDUCE-4071] NPE while executing MRAppMaster shutdown hook - MapReduce - [issue]
...While running the shutdown hook of MRAppMaster, hit NPEException in thread "Thread-1" java.lang.NullPointerException at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$ContainerAllocatorRoute...
http://issues.apache.org/jira/browse/MAPREDUCE-4071    Author: Bhallamudi Venkata Siva K..., 2014-05-13, 21:04
[MAPREDUCE-3360] Provide information about lost nodes in the UI. - MapReduce - [issue]
...Currently there is no information provided about lost nodes. Provide information in the UI....
http://issues.apache.org/jira/browse/MAPREDUCE-3360    Author: Bhallamudi Venkata Siva K..., 2013-09-10, 14:34
[MAPREDUCE-3115] OOM When the value for the property "mapred.map.multithreadedrunner.class" is set to MultithreadedMapper instance. - MapReduce - [issue]
...When we set the value for the property mapred.map.multithreadedrunner.class as instance of MultithreadedMapper, using MultithreadedMapper.setMapperClass(), it simply throws IllegalArgumentEx...
http://issues.apache.org/jira/browse/MAPREDUCE-3115    Author: Bhallamudi Venkata Siva K..., 2012-12-03, 05:54
[MAPREDUCE-4040] History links should use hostname rather than IP address. - MapReduce - [issue]
...While navigating from web page (eg: /cluster/app/<app-id> ) to HS, browser displays IP address rather than hostname.JobHistoryUtils.javaif (address.getAddress().isAnyLocalAddress() || ...
http://issues.apache.org/jira/browse/MAPREDUCE-4040    Author: Bhallamudi Venkata Siva K..., 2012-10-11, 18:48
[MAPREDUCE-4395] Possible NPE at ClientDistributedCacheManager#determineTimestamps - MapReduce - [issue]
...ClientDistributedCacheManager#determineTimestampsURI[] tfiles = DistributedCache.getCacheFiles(job);It may be possible that tfiles array contains null as it's entry, and subsequently leads t...
http://issues.apache.org/jira/browse/MAPREDUCE-4395    Author: Bhallamudi Venkata Siva K..., 2012-07-18, 12:49
Can we use String.intern inside WritableUtils#readString()? - MapReduce - [mail # dev]
...Hi All,   I noticed that WritableUtils.readString(), while deserializing the   strings, creates a string object every time. But there may be   applications, which serialize a ...
   Author: Bhallamudi Venkata Siva K..., 2012-07-12, 13:02
[MAPREDUCE-4389] Map only jobs should work even for MapOutput(Key|Value)Class configuration - MapReduce - [issue]
...I have written a Map only job and have set MapOutput(Key|Value)Class.Job was passing when I set TextOutputFormat, however, when I changed the OF to SequenceFileOutputFormat, job started fail...
http://issues.apache.org/jira/browse/MAPREDUCE-4389    Author: Bhallamudi Venkata Siva K..., 2012-07-03, 02:34
[MAPREDUCE-2346] JobClient's isSuccessful and isComplete API's can throw NPE in some cases - MapReduce - [issue]
...Description: Submit a job to the job tracker and let the job complete its execution through one of the job client's submitJob APIs. Jobclient returns a handle to the job, in the form of a Ru...
http://issues.apache.org/jira/browse/MAPREDUCE-2346    Author: Bhallamudi Venkata Siva K..., 2012-05-29, 18:50
[MAPREDUCE-3130] Output files are not moved to job output directory after task completion - MapReduce - [issue]
...When MultipleOutputs (OutputFormat set to TextOutputFormat) is used to write output files to different namedOutputFiles, turned off normal output file generation(i.e.part-r-<#reduce>) ...
http://issues.apache.org/jira/browse/MAPREDUCE-3130    Author: Bhallamudi Venkata Siva K..., 2012-05-28, 05:40
[MAPREDUCE-3870] Invalid App Metrics - MapReduce - [issue]
...I have observed incorrect Apps Completed and Apps Pending metrics when an application has failed or finished (successful) after multiple attempts(failures)....
http://issues.apache.org/jira/browse/MAPREDUCE-3870    Author: Bhallamudi Venkata Siva K..., 2012-05-22, 14:05
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