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[MAPREDUCE-1155] Streaming tests swallow exceptions
...Many of the streaming tests (including TestMultipleArchiveFiles) catch exceptions and print their stack trace rather than failing the job. This means that tests do not fail even when the job...
, 2010-08-24, 21:19
[MAPREDUCE-1089] Fair Scheduler preemption triggers NPE when tasks are scheduled but not running
...We see exceptions like this when preemption runs when a task has been scheduled on a TT but has not yet started running.2009-10-09 14:30:53,989 INFO org.apache.hadoop.mapred.FairScheduler: S...
, 2010-08-24, 21:18
[MAPREDUCE-1985] java.lang.ArrayIndexOutOfBoundsException in analysejobhistory.jsp of jobs with 0 maps
...This is Yahoo bug #3460762 included in ydist, but couldn't find a public JIRA for it. Uploading patch from YDH in case anyone else has run into this on the 0.20 branch....
, 2010-08-02, 10:08
[MAPREDUCE-1120] JobClient poll intervals should be job configurations, not cluster configurations
...Job.waitForCompletion gets the poll interval from the Cluster object's configuration rather than its own Job configuration. This is counter-intuitive - Chris and I both made this same mistak...
, 2010-07-02, 00:04
[MAPREDUCE-1499] JobTracker.finalizeJob inverts lock order and causes potential deadlock
...This issue was brought up by Matei in MAPREDUCE-1436 as a fairsched bug, but it turns out it's a JT bug even with the fifo scheduler in unpatched 0.20.2. JobTracker.finalizeJob locks JT.jobs...
, 2010-02-25, 01:20
[MAPREDUCE-1441] Configuration of directory lists should trim whitespace
...HADOOP-2366 added a getTrimmedStringCollection method to Configuration. MapReduce should use this for all the cases where it configures a list of directories. This solves issues that come up...
, 2010-02-13, 18:33
[MAPREDUCE-119] JobTracker and TaskTracker enter infinite loop when TaskTracker reports bad taskid
...If the TaskTracker somehow gets into a state where it has a task in COMMIT_PENDING state that the JobTracker does not know about, the JobTracker will throw NPEs while processing heartbeats. ...
, 2010-02-11, 07:04
[MAPREDUCE-1451] Minor lock inversions in capacity scheduler
...Running jcarder on the contrib unit tests yielded 3 lock inversions in the capacity scheduler. I don't know enough about the scheduler to know if they're problems - they look harmless enough...
, 2010-02-04, 03:37
[MAPREDUCE-1268] Update streaming tests to JUnit 4 style
...Suggested by Chris in MAPREDUCE-1155...
, 2010-01-04, 23:18
[MAPREDUCE-1228] OutOfMemoryErrors in ReducerTask due to int overflow on >2G RAM tasks
...The ReduceTask RAMManager uses ints for tracking amounts of memory. For tasks with >2G RAM allocated, these can overflow and cause memory usage to become incorrectly tracked and run away....
, 2009-11-21, 00:33
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