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From "Uma Maheswara Rao G (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2720) HA : TestStandbyIsHot is failing while copying in_use.lock file from NN1 to NN2
Date Fri, 23 Dec 2011 10:16:30 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13175371#comment-13175371
] 

Uma Maheswara Rao G commented on HDFS-2720:
-------------------------------------------

Trace:

java.io.IOException: The process cannot access the file because another process has locked
a portion of the file
	at java.io.FileInputStream.readBytes(Native Method)
	at java.io.FileInputStream.read(FileInputStream.java:177)
	at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:75)
	at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:49)
	at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:95)
	at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:338)
	at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:329)
	at org.apache.hadoop.hdfs.MiniDFSCluster.copyNameDirs(MiniDFSCluster.java:671)
	at org.apache.hadoop.hdfs.MiniDFSCluster.createNameNodesAndSetConf(MiniDFSCluster.java:616)
	at org.apache.hadoop.hdfs.MiniDFSCluster.initMiniDFSCluster(MiniDFSCluster.java:542)
	at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:274)
	at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:263)
	at org.apache.hadoop.hdfs.MiniDFSCluster$Builder.build(MiniDFSCluster.java:256)
	at org.apache.hadoop.hdfs.server.namenode.ha.TestStandbyIsHot.testStandbyIsHot

Other HA related tests also fails with the same reason.
                
> HA : TestStandbyIsHot is failing while copying in_use.lock file from NN1 to NN2 
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-2720
>                 URL: https://issues.apache.org/jira/browse/HDFS-2720
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, test
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>
> To maintain the clusterID same , we are copying the namespaceDirs from 1st NN to other
NNs.
> While copying this files, in_use.lock file may not allow to copy in all the OSs since
it has aquired the lock on it. 

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