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Re: Throttle replication speed in case of datanode failure - HDFS - [mail # user]
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...Not true per the sources, it controls all DN->DN copy/move rates, although the property name is misleading. Are you noticing a consistent rise in the rate or is it spiky? On Fri, J...
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Author: Harsh J,
2013-01-17, 21:41
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Re: Hadoop NON DFS space - HDFS - [mail # user]
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...What is the amount of data you are attempting to crunch in one MR job? Note that Map intermediate outputs are written to disk before being sent to reducers and this counts for non-DFS usage....
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Author: Harsh J,
2013-01-17, 14:07
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Re: hadoop namenode recovery - HDFS - [mail # user]
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...Randy, A very slow NFS is certainly troublesome, and slows down the write performance for every edit waiting to get logged to disk (there's a logSync_avg_time metric that could be moni...
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Author: Harsh J,
2013-01-17, 13:38
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Re: Configuration object not loading parameters in unit tests - HDFS - [mail # user]
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...The "known" config files (various *-site.xml) are loaded if they are discoverable as system resources, i.e. they are present in a directory on the classpath or in the root of a jar that is o...
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Author: Harsh J,
2013-01-16, 18:30
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Re: Hadoop NON DFS space - HDFS - [mail # user]
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...Wipe your OS out. Please read: http://search-hadoop.com/m/9Qwi9UgMOe On Wed, Jan 16, 2013 at 1:16 PM, Vikas Jadhav wrote: Harsh J...
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Author: Harsh J,
2013-01-16, 07:53
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Re: hadoop namenode recovery - HDFS - [mail # user]
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...The NFS mount is to be soft-mounted; so if the NFS goes down, the NN ejects it out and continues with the local disk. If auto-restore is configured, it will re-add the NFS if its detected go...
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Author: Harsh J,
2013-01-16, 04:14
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Re: question about ZKFC daemon - HDFS - [mail # user]
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...No, ZooKeeper daemons == http://zookeeper.apache.org. On Tue, Jan 15, 2013 at 3:38 PM, ESGLinux wrote: Harsh J...
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Author: Harsh J,
2013-01-15, 10:11
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Re: question about ZKFC daemon - HDFS - [mail # user]
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...Hi, I fail to see your confusion. ZKFC != ZK ZK is a quorum software, like QJM is. The ZK peers are to be run odd in numbers, such as JNs are to be. ZKFC is something...
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Author: Harsh J,
2013-01-15, 09:55
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Re: hadoop namenode recovery - HDFS - [mail # user]
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...Its very rare to observe an NN crash due to a software bug in production. Most of the times its a hardware fault you should worry about. On 1.x, or any non-HA-carrying release, the bes...
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Author: Harsh J,
2013-01-15, 04:36
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Re: Adding new HUG in Sao Paulo to HadoopUsersGroup wiki page - HDFS - [mail # user]
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...Done. You can proceed and edit it in now. On Mon, Jan 14, 2013 at 7:21 PM, Paulo E. V. Magalhaes wrote: Harsh J...
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Author: Harsh J,
2013-01-14, 15:35
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