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[MAPREDUCE-4680] Job history cleaner should only check timestamps of files in old enough directories - MapReduce - [issue]
...Job history files are stored in yyyy/mm/dd folders.  Currently, the job history cleaner checks the modification date of each file in every one of these folders to see whether it's past ...
http://issues.apache.org/jira/browse/MAPREDUCE-4680    Author: Sandy Ryza, 2013-10-29, 13:04
[MAPREDUCE-5599] JobHistoryServer unnecessarily copies all jobs on each query - MapReduce - [issue]
...Instead, in CachedHistoryStorage, we should only copy jobs that will be returned....
http://issues.apache.org/jira/browse/MAPREDUCE-5599    Author: Sandy Ryza, 2013-10-28, 23:40
[MAPREDUCE-5463] Deprecate SLOTS_MILLIS counters - MapReduce - [issue]
...As discussed in MAPREDUCE-5311, the SLOTS_MILLIS_MAPS and SLOTS_MILLIS_REDUCES counters don't really make sense in MR2, and should be deprecated so that they can eventually be removed....
http://issues.apache.org/jira/browse/MAPREDUCE-5463    Author: Sandy Ryza, 2013-10-14, 15:14
[MAPREDUCE-5575] History files deleted from the intermediate directory never get removed from the JobListCache - MapReduce - [issue]
...The JobHistoryServer periodically scans through the intermediate directory. It adds all files to the JobListCache. It deletes job files that are older than the max age and moves all other fi...
http://issues.apache.org/jira/browse/MAPREDUCE-5575    Author: Sandy Ryza, 2013-10-10, 19:47
[MAPREDUCE-5383] Deprecate to mapreduce.jobtracker.staging.root.dir to yarn.app.mapreduce.am.staging-dir - MapReduce - [issue]
...This will allow configurations that had previously set mapreduce.jobtracker.staging.root.dir should be able to more easily transition to MR2, as well as make it clear that these properties r...
http://issues.apache.org/jira/browse/MAPREDUCE-5383    Author: Sandy Ryza, 2013-10-08, 20:01
[MAPREDUCE-5462] In map-side sort, swap entire meta entries instead of indexes for better cache performance - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-5462    Author: Sandy Ryza, 2013-09-25, 00:33
[MAPREDUCE-5367] Local jobs all use same local working directory - MapReduce - [issue]
...This means that local jobs, even in different JVMs, can't run concurrently because they might delete each other's files during work directory setup....
http://issues.apache.org/jira/browse/MAPREDUCE-5367    Author: Sandy Ryza, 2013-09-25, 00:33
[MAPREDUCE-5478] TeraInputFormat unnecessarily defines its own FileSplit subclass - MapReduce - [issue]
...TeraInputFormat defines its own TeraFileSplit subclass of FileSplit that adds a locations field, which is already included in FileSplit.This is causing MR2 TeraSort to fail on MR1, which, fo...
http://issues.apache.org/jira/browse/MAPREDUCE-5478    Author: Sandy Ryza, 2013-09-25, 00:33
[MAPREDUCE-5527] Add CONTAINERS_MILLIS_MAPS|REDUCES counters - MapReduce - [issue]
...It would be helpful to have counters which report the total wallclock time spent in all map/reduce tasks.  This is what SLOTS_MILLIS_MAPS usually did in MR1....
http://issues.apache.org/jira/browse/MAPREDUCE-5527    Author: Sandy Ryza, 2013-09-23, 17:25
[MAPREDUCE-5379] Include token tracking ids in jobconf - MapReduce - [issue]
...HDFS-4680 enables audit logging delegation tokens. By storing the tracking ids in the job conf, we can enable tracking what files each job touches....
http://issues.apache.org/jira/browse/MAPREDUCE-5379    Author: Sandy Ryza, 2013-09-17, 12:34
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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