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how to set job history server retention? - Hadoop - [mail # user]
...hi,maillist:               i use yarn job history server,it seems collect a lot of logand info,how can i set the retention of these logs? thanks ...
   Author: ch huang, 2014-05-16, 16:27
[expand - 1 more] - Re: issue about cluster balance - Hadoop - [mail # user]
...i record the disk status befor balance and after balance,from one of sourcenode  and one of destination nodebeforesource node/dev/sdd              1.8...
   Author: ch huang, 2014-05-15, 13:29
why MR job leave lot's of temp file in yarn.nodemanager.local-dirs ? - Hadoop - [mail # user]
...hi,maillist:              i find many file in my yarn.nodemanager.local-dirs ,it seemsfinished ( or killed ) job do not delete them ,how can i let thi...
   Author: ch huang, 2014-05-13, 16:27
[expand - 1 more] - Re: how can i archive old data in HDFS? - Hadoop - [mail # user]
...it just combine several file into one file ,no zip happenedOn Fri, Apr 11, 2014 at 9:10 PM, Peyman Mohajerian wrote: ...
   Author: ch huang, 2014-04-15, 00:56
which dir in HDFS can be clean ? - Hadoop - [mail # user]
...hi,maillist:          my HDFS cluster run about 1 year ,and i find many dir is verylarge,i wonder if some of them can be clean?like/var/log/hadoop-yarn/apps&nbs...
   Author: ch huang, 2014-04-11, 01:38
[expand - 2 more] - Re: use setrep change number of file replicas,but not work - Hadoop - [mail # user]
...i set replica number from 3 to 2,but i dump NN metrics ,thePendingDeletionBlocks is zero ,why?if the check thread will sleep a interval then do it's check work ,how longthe interval time is?...
   Author: ch huang, 2014-04-11, 01:27
issue about "mv: `/user/hive/warehouse/dsp_execution/2014-01-31/data_00000': Input/output error" - Hadoop - [mail # user]
...hi,maillist :            i need move datafile from one dir to another dir,but i find ifi typehadoop fs -mv /A/* /B/  in commandline ,it's ok,but if i ...
   Author: ch huang, 2014-03-31, 02:16
lot of attempt_local296445216_0001_m_000386_0 dir in NN dir - Hadoop - [mail # user]
...hi,maillist:          i find many dirs in/data/hadoopmapredlocal/taskTracker/hdfs/jobcache/job_local296445216_0001,it is my mapred local dir ,can i remove it sa...
   Author: ch huang, 2014-03-25, 00:57
issue of "Log aggregation has not completed or is not enabled." - Hadoop - [mail # user]
...hi,maillist:         i try look application log use the following process# yarn application -list                Applica...
   Author: ch huang, 2014-03-18, 07:39
[expand - 4 more] - Re: issue about write append into hdfs "ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: ch12:50010:DataXceiver error processing READ_BLOCK operation " - Hadoop - [mail # user]
...i changed all datanode config add dfs.datanode.max.xcievers value is 131072and restart all DN, still no useOn Fri, Feb 21, 2014 at 12:25 PM, Anurag Tangri wrote: ...
   Author: ch huang, 2014-02-21, 06:09
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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