Re: Secondary namenode is crashing and complaining about non-existing files

/hbase-bajk and /backup/base-bak Thanks -- Alex -- Thanks Regards, 李剑 Jameson Li Focus on Hadoop,Mysql

hadoop imbalanced topology

Hi, Is it right that hadoop Network Topology design treat an imbalanced topology as an invalid topology? This is mentioned here https://issues.apache.org/jira/browse/MAPREDUCE-4095(TestJobInProgress#testLocalityuses a bogus topology.) said:(

Re: rack topology data update

Regards, Saurabh Bhutyani Call : 9820083104 Gtalk: s4saur...@gmail.com On Thu, Sep 13, 2012 at 11:25 AM, Viji R v...@cloudera.com wrote: Hi Jameson, If the NameNode has cached the wrong value earlier, it will not refresh that until you restart it. On Thu, Sep 13, 2012 at 11:21 AM, Jameson

Re: removing datanodes from clustes.

just create *exclude files* and update the conf file and refreshNodes will be OK. 专注于Mysql,MSSQL,Oracle,Hadoop 2012/9/12 yogesh.kuma...@wipro.com

Re: rack topology data update

Harsh J, If a new datanode has joined the cluster, and has a default rack info cached in the namenode, it will no way to change its cache other than restart the namenode. Am I right? 专注于Mysql,MSSQL,Oracle,Hadoop 2012/9/13 Harsh J ha...@cloudera.com Hey Steve, True about the decisions part,

rack topology data update

Our hadoop version is hadoop-0.20-append+4. We have configured the rack awareness in the namenode. But when I add new datanode, and update the topology data file, and restart the datanode, I just see the log in the namenode that: 2012-09-13 10:35:25,074 INFO org.apache.hadoop.net.NetworkTopology:

Re: rack topology data update

Hi harsh, I have followed your suggestion operation. 1, stop the new datanode.(I have modified the topology file in the namenode before.) 2, run 'hadoop dfsadmin -refreshNodes' on the namenode 3, start the new datanode. But it really not update the new topology mapping. It just show the start

Re: configure hadoop-0.22 fairscheduler

and what you're seeing instead? :) On Thu, Sep 6, 2012 at 2:47 PM, Jameson Li hovlj...@gmail.com wrote: I want to test version hadoop-0.22. But when configurate the fairescheduler, I have some troublesome. The fairscheduler is not efficient. And I have configured this items in the mapred

configure hadoop-0.22 fairscheduler

I want to test version hadoop-0.22. But when configurate the fairescheduler, I have some troublesome. The fairscheduler is not efficient. And I have configured this items in the mapred-site.xml, and also I hava copy the fairscheduler jar file to the $HADOOP_HOME/lib: property

avoid assigning hbase-access-operatation map/reduce slot to the tasktracker?

(ClientCnxn.java:1078)* Thanks, Jameson Li.

Re: avoid assigning hbase-access-operatation map/reduce slot to the tasktracker?

) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1078) Thanks, Jameson Li.