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[MAPREDUCE-6279] AM should explicity exit JVM after all services have stopped - MapReduce - [issue]
...Occasionally the MapReduce AM can "get stuck" trying to shut down.  MAPREDUCE-6049 and MAPREDUCE-5888 were specific instances that have been fixed, but this can also occur with uber job...
http://issues.apache.org/jira/browse/MAPREDUCE-6279    Author: Jason Lowe, 2015-05-02, 20:42
[MAPREDUCE-3517]  "map.input.path" is null at the first split when use CombieFileInputFormat - MapReduce - [issue]
..."map.input.path" is null at the first split when use CombieFileInputFormat. because in runNewMapper function, mapContext instead of taskContext which is set "map.input.path".  so we nee...
http://issues.apache.org/jira/browse/MAPREDUCE-3517    Author: wanbin, 2015-05-02, 20:15
[MAPREDUCE-5577] Allow querying the JobHistoryServer by job arrival time - MapReduce - [issue]
... The JobHistoryServer REST APIs currently allow querying by job submit time and finish time.  However, jobs don't necessarily arrive in order of their finish time, meaning that a c...
http://issues.apache.org/jira/browse/MAPREDUCE-5577    Author: Sandy Ryza, 2015-05-02, 20:10
[MAPREDUCE-6351] Reducer hung in copy phase. - MapReduce - [issue]
...ProblemReducer gets stuck in copy phase and doesn't make progress for very long time. After killing this task for couple of times manually, it gets completed. Observations Verfied gc logs. F...
http://issues.apache.org/jira/browse/MAPREDUCE-6351    Author: Laxman, 2015-05-02, 19:42
[MAPREDUCE-5227] JobTrackerMetricsSource and QueueMetrics should standardize naming rules - MapReduce - [issue]
...JobTrackerMetricsSource and QueueMetrics provides users with some metrics, but its naming rules( "jobs_running", "running_maps", "running_reduces") sometimes confuses users. It should be sta...
http://issues.apache.org/jira/browse/MAPREDUCE-5227    Author: Tsuyoshi Ozawa, 2015-05-02, 19:28
[MAPREDUCE-5225] SplitSampler in mapreduce.lib should use a SPLIT_STEP to jump around splits - MapReduce - [issue]
...Now, SplitSampler only samples the first maxSplitsSampled splits, caused by MAPREDUCE-1820. However, jumping around all splits is in general preferable than the first N splits....
http://issues.apache.org/jira/browse/MAPREDUCE-5225    Author: Zhijie Shen, 2015-05-02, 19:27
[MAPREDUCE-4487] Reduce job latency by removing hardcoded sleep statements - MapReduce - [issue]
...There are a few places in MapReduce where there are hardcoded sleep statements. By replacing them with wait/notify or similar it's possible to reduce latency for short running jobs....
http://issues.apache.org/jira/browse/MAPREDUCE-4487    Author: Tom White, 2015-05-02, 19:24
[MAPREDUCE-5499] Fix synchronization issues of the setters/getters of *PBImpl which take in/return lists - MapReduce - [issue]
...Similar to YARN-609. There're the following *PBImpls which need to be fixed:1. GetDiagnosticsResponsePBImpl2. GetTaskAttemptCompletionEventsResponsePBImpl3. GetTaskReportsResposnePBImpl4. Co...
http://issues.apache.org/jira/browse/MAPREDUCE-5499    Author: Zhijie Shen, 2015-05-02, 18:40
[MAPREDUCE-5374] CombineFileRecordReader does not set "map.input.*" configuration parameters for first file read - MapReduce - [issue]
...The CombineFileRecordReader operates on splits consisting of multiple files. Each time a new record reader is initialised for a "chunk", certain parameters are supposed to be set on the conf...
http://issues.apache.org/jira/browse/MAPREDUCE-5374    Author: Dave Beech, 2015-05-02, 18:35
[MAPREDUCE-5203] Make AM of M/R Use NMClient - MapReduce - [issue]
...YARN-422 adds NMClient. AM of mapreduce should use it instead of using the raw ContainerManager proxy directly. ContainerLauncherImpl needs to be changed....
http://issues.apache.org/jira/browse/MAPREDUCE-5203    Author: Zhijie Shen, 2015-05-02, 17:49
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NEW: Monitor These Apps!
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