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issue about namenode start slow - Hadoop - [mail # user]
...hi,maillist:      my hadoop cluster lost power last weekend ,when i restart my namenode,i find it get info from journalnode ,and do transaction again ,but i seeit very sl...
   Author: ch huang, 2014-09-22, 02:59
issue about let a common user run application on YARN (with kerberose) - Hadoop - [mail # user]
...hi,maillist:       i use kerberos to do auth for my hadoop cluster, i have a 3-nodecluster(HDFS& YARN)z1.example.com (NN,RM)z2.example.com (NM,DN)z3.example.com (NM,DN,pr...
   Author: ch huang, 2014-09-16, 06:39
Datanode can not start with error "Error creating plugin: org.apache.hadoop.metrics2.sink.FileSink" - Hadoop - [mail # user]
...hi,maillist:   i have a 10-worknode hadoop cluster using CDH 4.4.0 , one of my datanode,one of it's disk is full, when i restart this datanode ,i get errorSTARTUP_MSG:   java ...
   Author: ch huang, 2014-09-04, 03:09
issue about hadoop data migrate between IDC - Hadoop - [mail # user]
...hi,maillist:               my company signed a new IDC ,i must move the hadoopdata(about 30T data) to new IDC,any good suggestion? ...
   Author: ch huang, 2014-08-07, 01:14
[expand - 3 more] - Re: issue about run MR job use system user - Hadoop - [mail # user]
...i reslove this by make alex directory under staging directory and set theowner to alexOn Thu, Jul 24, 2014 at 10:11 PM, java8964  wrote: ...
   Author: ch huang, 2014-07-25, 02:39
[expand - 1 more] - Re: issue about distcp " Source and target differ in block-size. Use -pb to preserve block-sizes during copy." - Hadoop - [mail # user]
...2014-07-24 17:33:04,783 WARNorg.apache.hadoop.security.UserGroupInformation: PriviledgedActionExceptionas:hdfs (auth:SIMPLE) cause:org.apache.hadoop.ipc.StandbyException:Operation category R...
   Author: ch huang, 2014-07-25, 02:36
why i can not use '*' in remove hadoop directory? - Hadoop - [mail # user]
...hi,maillist:         i use "sudo -u hdfs hadoop fs -rm -r -skipTrash/user/hive/warehouse/adx.db/dsp_request/2014-03*/*" in CDH4.4,but i find itcan not work in CDH5,w...
   Author: ch huang, 2014-07-22, 00:52
can i monitor all hadoop component from one box? - Hadoop - [mail # user]
...hi,maillist:      i want to check all hadoop cluster component process is alive or die,i do not know if it can do like check zookeeper node from onemachine?thanks ...
   Author: ch huang, 2014-07-08, 02:46
what stage dir in yarn framework use for? - Hadoop - [mail # user]
...hi,mailist:                     i see yarn.app.mapreduce.am.staging-dir in doc ,and ido not know it use for ,and i also want to know if...
   Author: ch huang, 2014-06-13, 06:48
the data will lost if the active node data not sync to standby ? - Hadoop - [mail # user]
...hi,maillist:               i have a NN HA , when the active down ,the changed metadatais still not write to local disk ,and not sync to standby ,this ...
   Author: ch huang, 2014-06-12, 01:53
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