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[MAPREDUCE-4907] TrackerDistributedCacheManager issues too many getFileStatus calls - MapReduce - [issue]
...TrackerDistributedCacheManager issues a number of redundant getFileStatus calls when determining the timestamps and visibilities of files in the distributed cache.  300 distributed cach...
http://issues.apache.org/jira/browse/MAPREDUCE-4907    Author: Sandy Ryza, 2013-01-18, 12:37
[MAPREDUCE-4655] MergeManager.reserve can OutOfMemoryError if more than 10% of max memory is used on non-MapOutputs - MapReduce - [issue]
...The MergeManager does a memory check, using a limit that defaults to 90% of Runtime.getRuntime().maxMemory(). Allocations that would bring the total memory allocated by the MergeManager over...
http://issues.apache.org/jira/browse/MAPREDUCE-4655    Author: Sandy Ryza, 2013-01-03, 19:47
[MAPREDUCE-4856] TestJobOutputCommitter uses same directory as TestJobCleanup - MapReduce - [issue]
...This can cause problems if one of the tests fails to delete....
http://issues.apache.org/jira/browse/MAPREDUCE-4856    Author: Sandy Ryza, 2012-12-21, 12:42
[MAPREDUCE-4880] TaskImpl interprets death of second attempt as RetroactiveKilledTransition even when first attempt succeeds - MapReduce - [issue]
...Consider a reduce task with 2 attempts, one running and one unassigned.  Reduce task attempt 1 succeeds.  This causes reduce task attempt 2 to be killed.  This causes reduce t...
http://issues.apache.org/jira/browse/MAPREDUCE-4880    Author: Sandy Ryza, 2012-12-17, 19:58
[MAPREDUCE-4795] TestDelegationTokenRenewal should not use static variables in Renewer - MapReduce - [issue]
...TestDelegationTokenRenewal uses static variables to access what's going on inside its Renewer class, making it so problems can occur if the tests are run in parallel....
http://issues.apache.org/jira/browse/MAPREDUCE-4795    Author: Sandy Ryza, 2012-12-07, 23:57
[MAPREDUCE-4723] Fix warnings found by findbugs 2 - MapReduce - [issue]
...The MAPREDUCE side of HADOOP-8594. Umbrella jira for fixing the warnings found by findbugs 2....
http://issues.apache.org/jira/browse/MAPREDUCE-4723    Author: Sandy Ryza, 2012-11-20, 13:21
[MAPREDUCE-4777] In TestIFile, testIFileReaderWithCodec relies on testIFileWriterWithCodec - MapReduce - [issue]
...The file used to test reading is expected to have been created by the file used to test writing...
http://issues.apache.org/jira/browse/MAPREDUCE-4777    Author: Sandy Ryza, 2012-11-08, 14:02
[MAPREDUCE-4725] Setting local variables to null causes findbugs 2 warnings - MapReduce - [issue]
...In a couple places, local variables are set to null when they are no longer used.  This is unnecessary as the compiler is able to figure this out, and causes findbugs warnings....
http://issues.apache.org/jira/browse/MAPREDUCE-4725    Author: Sandy Ryza, 2012-10-24, 01:39
[MAPREDUCE-4726] Empty catch blocks cause findbugs 2 warnings - MapReduce - [issue]
...Debug messages can be logged....
http://issues.apache.org/jira/browse/MAPREDUCE-4726    Author: Sandy Ryza, 2012-10-24, 01:39
[MAPREDUCE-4722] LocalJobRunner random ID should not be chosen with Math.abs(rand.nextInt()) - MapReduce - [issue]
...According to findbugs 2, this can cause problems if the randomly generated int is Integer.MIN_VALUE because Math.abs(Integer.MIN_VALUE) == Integer.MIN_VALUE....
http://issues.apache.org/jira/browse/MAPREDUCE-4722    Author: Sandy Ryza, 2012-10-11, 19:42
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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