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how to benchmark the whole hadoop cluster performance? - HDFS - [mail # user]
...hi ,all:        i want to evaluate my hadoop cluster performance ,what tool can i use? (TestDFSIO,nnbench?)...
   Author: ch huang, 2013-09-02, 06:56
hadoop-env.sh file not exist in hadoop2.0 anymore ,and where i can tune JVM HEAPSIZE? - HDFS - [mail # user]
...hi,all:   i have a big problem!!    i try the two cluster ,one cluster is upgrade from cdh3 to cdh4 ,i changed hadoop-env.sh ,and restart node ,the heapsize will change, but o...
   Author: ch huang, 2013-08-22, 09:14
how to benchmark hadoop cluster - HDFS - [mail # user]
...hi,all:         i want to compare the performance of  capacity-scheduler and FIFO-scheduler,how to test it?what tools i can use? thanks...
   Author: ch huang, 2013-08-19, 00:59
which metrics is important for monitor? - HDFS - [mail # user]
...hi,all           i try to set some nagios alert for hadoop important metrics,but i do not know which metrics are valuable for track,any one has a good idea?...
   Author: ch huang, 2013-08-16, 05:58
issue about resource manager HA - HDFS - [mail # user]
...hi,all:  like name node resource manager is also a SPOF ,is there any solution for RM HA?...
   Author: ch huang, 2013-08-09, 01:06
issue about hadoop hardware choose - HDFS - [mail # user]
...hi,all:             My company need build a 10 node hadoop cluster (2 namenode and 8 datanode & node manager ,for both data storage and data analysis ) ,we have...
   Author: ch huang, 2013-08-08, 09:09
issure about HA in hadoop name node - HDFS - [mail # user]
...hi ,all: i deploy HA on hadoop name node ,and test it ,autoFailover is ok ,but when i add HA to hbase ,it cause two name node both in standby mode,and i try to failover manually ,but failed ...
   Author: ch huang, 2013-08-05, 04:56
Re: test lzo problem in hadoop - HDFS - [mail # user]
...i use yarn ,and i commented the following option and error is different   vi /etc/hadoop/conf/mapred-site.xml                  mapred.job.tr...
   Author: ch huang, 2013-08-02, 01:44
Re: datanode error "Cannot append to a non-existent replica BP-1099828917-192.168.10.22-1373361366827:blk_7796221171187533460_" - HDFS - [mail # user]
...thanks for reply, i the block did not exist ,but why it will missing?  On Wed, Jul 31, 2013 at 2:02 AM, Jitendra Yadav wrote:  ...
   Author: ch huang, 2013-07-31, 00:46
can kerberos cause performance impack on hadoop cluster? - HDFS - [mail # user]
...i have a product env hadoop cluster , i want to know if the kerberos  will cause big performance impack to my cluster?thanks all...
   Author: ch huang, 2013-07-30, 02:56
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