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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
any optimize suggestion for high concurrent write into hdfs? - Hadoop - [mail # user]
...hi,maillist:          is there any optimize for large of write into hdfs in same time ?thanks ...
   Author: ch huang, 2014-02-21, 01:08
issue abount hdfsWrite: FSDataOutputStream#write error: - Hadoop - [mail # user]
...hi,maillist:         i use scribe write log into hadoop hdfs, but one of my scribereport the problem ,and it seems some problem happen when scribe appenddata to hdfs...
   Author: ch huang, 2014-02-20, 01:02
issure about write append to a file ,and close ,reopen the same file - Hadoop - [mail # user]
...hi,maillist:           i use scribe to receive data from app ,write to hadoop hdfs,whenthe system in high concurrency connectit will cause hdfs error like the f...
   Author: ch huang, 2014-02-14, 01:47
what difference between livereplicas ,excessreplicas and excessblocks? - Hadoop - [mail # user]
...hi,maillist:         i am very confused about the three conception ,because i see noexcessreplicas in metadata dump file,but i see one excess block ,in metricsoutput...
   Author: ch huang, 2014-02-12, 01:34
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