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Re: Backup NameNode metadata in HA configuration - Hadoop - [mail # user]
...Great! That is what I need to know. I was expecting that fsimage can be ininconsistent state while applying changes and it can be wrong to just copyit in such moments.On Tue, Feb 4, 2014 at ...
   Author: Ivan Tretyakov, 2014-02-04, 08:10
Re: Problem sending metrics to multiple targets - Hadoop - [mail # user]
...We investigated the problem and found root cause. Metrics2 framework uses different from first version config parser (Metrics2 uses apache-commons, Metrics uses hadoop's).  org.apache.h...
   Author: Ivan Tretyakov, 2013-11-22, 13:30
DataNode heartbeat average time peaks - Hadoop - [mail # user]
...Hi!  We see DataNode heartbeat average time peaks in Ganglia up to 20-70 seconds while SecondaryNameNode performs checkpointing. See attached screenshots please.  I would like to c...
   Author: Ivan Tretyakov, 2013-03-25, 14:43
metrics all use the same namespace - Hadoop - [mail # user]
...Hi!  There is fixed issue in hadoop saying: "jvm metrics all use the same namespace" - https://issues.apache.org/jira/browse/HADOOP-7507  I was able to apply this fix in our cluste...
   Author: Ivan Tretyakov, 2013-01-17, 15:59
Set dmax for metrics - Hadoop - [mail # user]
...Hi!  I'm trying to set dmax value for metrics hadoop sends to ganglia. Our HDFS version uses metrics2 context so I tried approach from here: https://svn.apache.org/repos/asf/hadoop/comm...
   Author: Ivan Tretyakov, 2013-01-17, 15:38
Re: JobCache directory cleanup - Hadoop - [mail # user]
...Thanks for replies!  keep.failed.task.files set to false. Config of one of the jobs attached.   On Fri, Jan 11, 2013 at 5:44 AM, Hemanth Yamijala <[EMAIL PROTECTED]    ...
   Author: Ivan Tretyakov, 2013-01-11, 09:58
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