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question about NM heapsize - Hadoop - [mail # user]
...hi,maillist:    i set YARN_NODEMANAGER_HEAPSIZE=15000,so the NM run in a 15G JVM,butwhy i see web ui of yarn ,in it's Active Nodes -> Mem Avail ,only 8GB? ,why? ...
   Author: ch huang, 2014-05-23, 02:50
about hadoop upgrade - Hadoop - [mail # user]
...hi,maillist:        i want to upgrade my cluster ,in doc,one of step is backupnamenode dfs.namenode.name.dirdirectory,i have 2 directories defined in hdfs-site.xml,s...
   Author: ch huang, 2014-05-19, 10:10
question about search log use yarn command - Hadoop - [mail # user]
...hi,mailist:          doc say          $ $HADOOP_YARN_HOME/bin/yarn logsRetrieve logs for completed YARN applications.usage: yarn l...
   Author: ch huang, 2014-05-16, 22:47
issue about joblistcache - Hadoop - [mail # user]
...hi,maillist:         i see lot's of information from yarn jobhistory server says  ,where is the JobListCache  location?"2014-05-15 15:15:30,758 WARNorg.apa...
   Author: ch huang, 2014-05-16, 16:52
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
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