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[expand - 2 more] - Re: Failed to rollback from hadoop-2.4.1 to hadoop 2.2.0 - Hadoop - [mail # user]
...I rollback from 2.4.1 to 2.2.0 and seems 2.2.0 does not has optionupgradeProgress, right?I guess it might be a hadoop issue, as I still could not start datanodeafter rollback2014-09-18 4:15 ...
   Author: sam liu, 2014-09-21, 04:09
Start standby namenode using bootstrapStandby hangs - Hadoop - [mail # user]
...Hi Experts,My hadoop cluster is enabled HA with QJM and I failed to upgrade it fromversion 2.2.0 to 2.4.1. Why? Is this a existing issue?My steps:1. Stop hadoop cluster2. On each node, upgra...
   Author: sam liu, 2014-09-10, 09:02
HDFS rollingUpgrade failed due to unexpected storage info - Hadoop - [mail # user]
...Hi Experts,According to section 'Upgrading Non-Federated Clusters' ofhttp://hadoop.apache.org/docs/r2.4.0/hadoop-project-dist/hadoop-hdfs/HdfsRollingUpgrade.html,I tried to upgrade hadoop 2....
   Author: sam liu, 2014-09-01, 07:11
[HADOOP-10759] Remove hardcoded JAVA_HEAP_MAX in hadoop-config.sh - Hadoop - [issue]
...In hadoop-common-project/hadoop-common/src/main/bin/hadoop-config.sh, there is a hard code for Java parameter: 'JAVA_HEAP_MAX=-Xmx1000m'. It should be removed....
http://issues.apache.org/jira/browse/HADOOP-10759    Author: sam liu, 2014-08-22, 08:18
[expand - 1 more] - Re: How to use docker in Hadoop, with patch of YARN-1964? - Hadoop - [mail # user]
...After applying this patch, I added following config in yarn-site.xml:      yarn.nodemanager.container-executor.classorg.apache.hadoop.yarn.server.nodemanager.DockerC...
   Author: sam liu, 2014-08-13, 03:14
[expand - 3 more] - Re: File Permission Issue using Distributed Cache of Hadoop-2.2.0 - Hadoop - [mail # user]
...My colleague found distcp tool does miss execution permission as well.I also found some difference between hadoop 1.x and hadoop 2.x:- On Hadoop 2.2.0, I can use command 'hadoop dfs -chmod 7...
   Author: sam liu, 2014-05-31, 03:28
[expand - 6 more] - Re: Failed to run 'mvn package' on hadoop-2.2 using Cygwin - Hadoop - [mail # user]
...Hi Jason,Actually the classpath/path of my linux OS in Cygwin include theprotoc-2.5.0-win32/protoc.exe file...2014-05-23 21:30 GMT+08:00 Jason Hubbard : ...
   Author: sam liu, 2014-05-24, 08:52
Questions about Hadoop logs and mapred.local.dir - Hadoop - [mail # user]
...Hi Experts,1. The size of mapred.local.dir is big(30 GB), how many methods could cleanit correctly?2. For logs of NameNode/DataNode/JobTracker/TaskTracker, are they allrolling type log? What...
   Author: sam liu, 2014-05-16, 13:50
[expand - 1 more] - Re: For QJM HA solution, after failover, application must update NameNode IP? - Hadoop - [mail # user]
...Hi Bryan,Thanks for your detailed response!- 'you use a logical name for your "group of namenodes"': In your case, itshould be 'MYCLUSTER'- 'provide a means for the client to handle connecti...
   Author: sam liu, 2014-04-29, 14:08
[expand - 1 more] - Re: What codes to chmod 755 to "yarn.nodemanager.log-dirs"? - Hadoop - [mail # user]
...My version is 2.1.0 and the cluster uses DefaultContainerExecutor. Is itpossible that DefaultContainerExecutor change the permission of existingnodemanager log-dir to 755?2014-04-25 0:54 GMT...
   Author: sam liu, 2014-04-25, 15:43
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