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how to corrupt a replica of a block by manually? - MapReduce - [mail # user]
...hi,maillist:         what is the sample way to corrupt a replica of a block ,i opened a replica data file ,and delete a line,than use fsck ,nothing corrupt,  should ...
   Author: ch huang, 2013-12-12, 01:07
[expand - 5 more] - Re: how to handle the corrupt block in HDFS? - MapReduce - [mail # user]
...and is fsck report data from BlockPoolSliceScanner? it seems run once each 3 weeks can i restart DN one by one without interrupt the job which is running?  On Thu, Dec 12, 2013 at 2:33 ...
   Author: ch huang, 2013-12-12, 00:46
Re: issue about corrupt block test - MapReduce - [mail # user]
...you are right ,but i only find meta file why no block data file? # find /data -name 'blk_-5451264646515882190_106793*' /data/dataspace/3/current/BP-50684181-192.168.10.220-1383638483950/curr...
   Author: ch huang, 2013-12-11, 09:16
issue about file in DN datadir - MapReduce - [mail # user]
...hi,maillist:               i have a question about file which represent a block in DN,here is my way to find a block ,i have a file part-m-00000 and i find...
   Author: ch huang, 2013-12-11, 09:14
issue about running example job use custom mapreduce var - MapReduce - [mail # user]
...hi,maillist:                 i try assign reduce number in commandline but seems not useful,i run tera sort like this  # hadoop jar /usr/lib/hado...
   Author: ch huang, 2013-12-10, 03:50
Re: Monitor network traffic in hadoop - MapReduce - [mail # user]
...hi, Abdul Navaz: assign shuffle port in each NM using option "mapreduce.shuffle.port" in mapred-site.xml,then monitor this port use tcpdump or wireshark ,hope this info can help you  On...
   Author: ch huang, 2013-12-06, 03:31
[expand - 1 more] - Re: how many job request can be in queue when the first MR JOB is blocked due to lack of resource? - MapReduce - [mail # user]
...i search the code only src/hadoop-mapreduce1-project/src/contrib/capacity-scheduler/src/test/org/apache/hadoop/mapred/TestCapacitySchedulerConf.java file has the variables,i did see it on ./...
   Author: ch huang, 2013-12-06, 03:24
error in copy from local file into HDFS - MapReduce - [mail # user]
...hi,maillist:               i got a error when i put local file into HDFS  [root@CHBM224 test]# hadoop fs -copyFromLocal /tmp/aa /alex/ 13/12/06 09:40:...
   Author: ch huang, 2013-12-06, 01:43
issue about capacity scheduler - MapReduce - [mail # user]
...hi,maillist :                  i use yarn framework and capacity scheduler  ,and i have two queue ,one for hive and the other for big MR job...
   Author: ch huang, 2013-12-04, 09:33
issue about total input byte of MR job - MapReduce - [mail # user]
...i run the MR job,at the MR output i see  13/12/03 14:02:28 INFO mapreduce.JobSubmitter: number of splits:2717  because my each data block size is 64M,so total byte is 2717*64M/1024...
   Author: ch huang, 2013-12-03, 08:28
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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