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[MAPREDUCE-3111] Fix log serving in NodeManager - MapReduce - [issue]
...Just noticed that the current log serving is using the raw writer (instead of Hamlet) to serve logs without escaping html.It's actually easier/cleaner to use Hamlet to serve logs:pre._(buffe...
http://issues.apache.org/jira/browse/MAPREDUCE-3111    Author: Luke Lu, 2014-04-21, 19:25
[MAPREDUCE-5381] Support graceful decommission of tasktracker - MapReduce - [issue]
...When TTs are decommissioned for non-fault reasons (capacity change etc.), it's desirable to minimize the impact to running jobs.Currently if a TT is decommissioned, all running tasks on the ...
http://issues.apache.org/jira/browse/MAPREDUCE-5381    Author: Luke Lu, 2013-10-10, 00:34
[MAPREDUCE-4273] Make CombineFileInputFormat split result JDK independent - MapReduce - [issue]
...The split result of CombineFileInputFormat depends on the iteration order of  nodeToBlocks and rackToBlocks hash maps, which makes the result HashMap implementation hence JDK dependent....
http://issues.apache.org/jira/browse/MAPREDUCE-4273    Author: Luke Lu, 2013-05-14, 06:14
[MAPREDUCE-4271] Make TestCapacityScheduler more robust with non-Sun JDK - MapReduce - [issue]
...The capacity scheduler queue is initialized with a HashMap, the values of which are later added to a list (a queue for assigning tasks). TestCapacityScheduler depends on the order of the lis...
http://issues.apache.org/jira/browse/MAPREDUCE-4271    Author: Luke Lu, 2013-05-14, 05:30
[MAPREDUCE-4398] Fix mapred.system.dir permission error with FairScheduler - MapReduce - [issue]
...Incorrect job initialization logic in FairScheduler causes mysterious intermittent mapred.system.dir permission errors....
http://issues.apache.org/jira/browse/MAPREDUCE-4398    Author: Luke Lu, 2013-05-06, 03:51
[MAPREDUCE-4397] Introduce HADOOP_SECURITY_CONF_DIR for task-controller - MapReduce - [issue]
...The linux task controller currently hard codes the directory in which to look for its config file at compile time (via the HADOOP_CONF_DIR macro). Adding a new environment variable to look f...
http://issues.apache.org/jira/browse/MAPREDUCE-4397    Author: Luke Lu, 2013-05-04, 00:20
Re: Introducing Parquet: efficient columnar storage for Hadoop. - MapReduce - [mail # user]
...IMO, it'll be enlightening to Hadoop users to compare Parquet with Trevni and ORCFile, all of which are columnar formats for Hadoop that are relatively new. Do we really need 3 columnar form...
   Author: Luke Lu, 2013-03-12, 22:40
[MAPREDUCE-4396] Make LocalJobRunner work with private distributed cache - MapReduce - [issue]
...Some LocalJobRunner related unit tests fails if user directory permission and/or umask is too restrictive....
http://issues.apache.org/jira/browse/MAPREDUCE-4396    Author: Luke Lu, 2013-03-06, 09:55
[MAPREDUCE-3060] Generic shuffle service - MapReduce - [issue]
...When I was talking to Owen about MAPREDUCE-2600, we came across (again, talked about it with Chris before) the shuffle dependency issue. NodeManager currently has an implicit (hidden by the ...
http://issues.apache.org/jira/browse/MAPREDUCE-3060    Author: Luke Lu, 2013-01-24, 15:14
Re: Shuffling over the network for local map data. - MapReduce - [mail # dev]
...You can setup the right /etc/hosts to support the loopback. OTOH, saving disk io would be more important for small clusters with large instances. Hadoop historically works on large clusters ...
   Author: Luke Lu, 2013-01-22, 19:24
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