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Re: default capacity scheduler only one job in running status - Hadoop - [mail # user]
...yarn.scheduler.capacity.maximum-am-resource-percent  limits the max number of concurrently running AMs. By that I mean the max memory allowed for allocating AM (defined by this property...
   Author: Jian He, 2013-11-27, 02:33
Re: temporary file locations for YARN applications - Hadoop - [mail # user]
...This post might help a bit. http://hortonworks.com/blog/management-of-application-dependencies-in-yarn/  Thanks, Jian   On Mon, Oct 21, 2013 at 11:11 AM, Harsh J  wrote:  ...
   Author: Jian He, 2013-10-21, 18:22
Re: "bad interpreter: Text file busy" and other errors in Hadoop 2.1.0-beta - Hadoop - [mail # user]
...Hi John  This exception should indicate error from the container process. If the container process exits with non-zero exit code, it will be logged. In case of such errors, you'd better...
   Author: Jian He, 2013-08-31, 19:42
[HADOOP-9574] Add new methods in AbstractDelegationTokenSecretManager for restoring RMDelegationTokens on RMRestart - Hadoop - [issue]
...we're considering to add the following methods in AbstractDelegationTokenSecretManager for restoring RMDelegationTokens, these methods can also possibly be reused by hdfsDelegationTokenSecre...
http://issues.apache.org/jira/browse/HADOOP-9574    Author: Jian He, 2013-08-07, 17:24
Re: Running example programs on YARN - Hadoop - [mail # user]
...Yes, check the code base, there's a thing called MRAppMaster for all MR programs and YARNRunner to enable current JobClient to run on YARN.  Jian   On Sun, Jul 14, 2013 at 12:55 PM...
   Author: Jian He, 2013-07-14, 20:27
[HADOOP-9589] Extra master key is created when AbstractDelegationTokenSecretManager is started - Hadoop - [issue]
...When AbstractDelegationTokenSecretManager starts , AbstractDelegationTokenSecretManager.startThreads().updateCurrentKey() creates the first master key. Immediately after that, ExpiredTokenRe...
http://issues.apache.org/jira/browse/HADOOP-9589    Author: Jian He, 2013-06-11, 01:31
[HADOOP-9576] Make NetUtils.wrapException throw EOFException instead of wrapping it as IOException - Hadoop - [issue]
...In case of EOFException, NetUtils is now wrapping it as IOException, we may want to throw EOFException as it is, since EOFException can happen when connection is lost in the middle, the clie...
http://issues.apache.org/jira/browse/HADOOP-9576    Author: Jian He, 2013-06-05, 18:44
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