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[MAPREDUCE-6215] Map is not cleared in SortedMapWritable.readFields(DataInput in) - MapReduce - [issue]
...The readFields(DataInput in) in SortedMapWritable doesn't reset the internally used SortedMap. If this Writable object is reused then entries will get accumulated in the map with every call ...
http://issues.apache.org/jira/browse/MAPREDUCE-6215    Author: Ahmed Radwan, 2015-04-09, 22:58
[MAPREDUCE-2350] LocalJobRunner uses "mapred.output.committer.class" configuration property to retrive the OutputCommitter (regardless of whether the old API is used or the new API) - MapReduce - [issue]
...LocalJobRunner uses the "mapred.output.committer.class" configuration property to retrieve the output committer for the job, which can be different from the Output Committer returned from Ou...
http://issues.apache.org/jira/browse/MAPREDUCE-2350    Author: Ahmed Radwan, 2015-02-12, 10:15
[MAPREDUCE-4150] Versioning and rolling upgrades for MR2 - MapReduce - [issue]
...It doesn't seem that Yarn components, for example the ResourceManager or NodeManager, do build/package version checking before trying to communicate with each other. The objective of this ti...
http://issues.apache.org/jira/browse/MAPREDUCE-4150    Author: Ahmed Radwan, 2014-12-28, 18:31
[MAPREDUCE-2254] Allow setting of end-of-record delimiter for TextInputFormat - MapReduce - [issue]
...It will be useful to allow setting the end-of-record delimiter for TextInputFormat. The current implementation hardcodes '\n', '\r' or '\r\n' as the only possible record delimiters. This is ...
http://issues.apache.org/jira/browse/MAPREDUCE-2254    Author: Ahmed Radwan, 2014-01-13, 15:10
[MAPREDUCE-4511] Add IFile readahead - MapReduce - [issue]
...This ticket is to add IFile readahead as part of HADOOP-7714....
http://issues.apache.org/jira/browse/MAPREDUCE-4511    Author: Ahmed Radwan, 2013-07-17, 20:46
Re: Saving data in db instead of hdfs - MapReduce - [mail # user]
...You can use the DBOutputFormat to directly write your job output to a DB, see: http://hadoop.apache.org/docs/current/api/org/apache/hadoop/mapred/lib/db/DBOutputFormat.html  I'd also re...
   Author: Ahmed Radwan, 2013-05-02, 21:17
[MAPREDUCE-4346] Adding a refined version of JobTracker.getAllJobs() and exposing through the JobClient - MapReduce - [issue]
...The current implementation for JobTracker.getAllJobs() returns all submitted jobs in any state, in addition to retired jobs. This list can be long and represents an unneeded overhead especia...
http://issues.apache.org/jira/browse/MAPREDUCE-4346    Author: Ahmed Radwan, 2013-04-19, 17:20
[MAPREDUCE-3370] MiniMRYarnCluster uses a hard coded path location for the MapReduce application jar - MapReduce - [issue]
...MiniMRYarnCluster uses a hard coded relative path location for the MapReduce application jar. It is better to have this location as a system property so tests can pick the application jar re...
http://issues.apache.org/jira/browse/MAPREDUCE-3370    Author: Ahmed Radwan, 2013-04-12, 17:18
[MAPREDUCE-4703] Add the ability to start the MiniMRClientCluster using the configurations used before it is being stopped. - MapReduce - [issue]
...The objective here is to enable starting back the cluster, after being stopped, using the same configurations/port numbers used before stopping....
http://issues.apache.org/jira/browse/MAPREDUCE-4703    Author: Ahmed Radwan, 2012-12-18, 13:25
[MAPREDUCE-4406] Users should be able to specify the MiniCluster ResourceManager and JobHistoryServer ports - MapReduce - [issue]
...There is use-cases where users may need to specify the ports used for the resource manager and history server for the minicluster.In the current implementation, the MiniCluster sets these ad...
http://issues.apache.org/jira/browse/MAPREDUCE-4406    Author: Ahmed Radwan, 2012-11-14, 00:07
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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