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Re: IOException:Error Recovery for block - Hadoop - [mail # user]
...Hi,  Can you let us know which Hadoop version you are using?  Thanks ac  On 9 Dec 2012, at 3:03 PM, Manoj Babu wrote:  ...
   Author: ac@...), 2012-12-09, 11:51
Re: Strange machine behavior - Hadoop - [mail # user]
...Hi,  I always set  "vm.swappiness = 0" for my hadoop servers (PostgreSQL servers too).    The reason is that Linux moves memory pages to swap space if they have not been ...
   Author: ac@...), 2012-12-09, 11:45
Re: report generating tools for HBase - HBase - [mail # user]
...Hi Sonal,  Thanks for your sharing about Crux.  I am using PostgreSQL and would like to know if there is schema for PostgreSQL?  Thanks ac     On 6 Dec 2012, at 3:51...
   Author: ac@...), 2012-12-06, 08:48
Re: Map Reduce jobs taking a long time at the end - Hadoop - [mail # user]
...Hi,  Have you also checked .out file of the tasktracker in logs? It could contain some useful information for the issue.  Thanks ac   On 4 Dec 2012, at 8:27 PM, Jay Whittaker ...
   Author: ac@...), 2012-12-04, 13:59
[expand - 2 more] - Re: How to install Snappy? - HBase - [mail # user]
...Hi,   Something more about my workaround last time:  I used the following steps to test my workaround:    1) cd $HBASE_HOME ./bin/hbase org.apache.hadoop.hbase.util.Compr...
   Author: ac@...), 2012-12-03, 14:29
Re: How to clear hbase data in zookeeper - HBase - [mail # user]
...Hi,  I have tried to use the 'big hammer' before, here are my steps (it is not recommended and you should have your HBase and ZK shut down first):  ### shut down ZM and HBase  ...
   Author: ac@...), 2012-12-01, 04:36
Re: CheckPoint Node - MapReduce - [mail # user]
...Hi JM,  If you migrate 1.0.3 to 2.0.x, could you mind to share your migration steps? it is because I also have a 1.0.4 cluster (Ubuntu 12.04, Hadoop 1.0.4, Hbase 0.94.2 and ZooKeeper 3....
   Author: ac@...), 2012-12-01, 04:11
[expand - 4 more] - Re: Datanode: "Cannot start secure cluster without privileged resources" - Hadoop - [mail # user]
...Hi,  I think you are right!    1) $ jps 16152  16500 Jps   2) ps axu | grep 16152 hduser   16152  0.1  1.4 1834900 116760 ?      Sl &nb...
   Author: ac@...), 2012-11-26, 14:43
Re: EXT :Re: HBase Issues (perhaps related to 127.0.0.1) - HBase - [mail # user]
...Hi,  I am also using Ubuntu 12.04, Zookeeper 3.4.4 HBase 0.94.2 and Hadoop 1.0.4. (64-bit nodes), I finally managed to have the HBase cluster up and running, below is the line in my /et...
   Author: ac@...), 2012-11-24, 18:31
HBASE Benchmarking - HBase - [mail # user]
...Hi,  I tried to write one million records into the HBASE cluster with 5 nodes (Hbase 0.94.2 on Hadoop 1.0.4)  1. Methide: sequentialWrite 2. From log, I found that the process had ...
   Author: ac@...), 2012-11-22, 12:49
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