[jira] [Commented] (HDFS-2720) HA : TestStandbyIsHot is failing while copying in_use.lock file from NN1 to NN2

2011-12-23 Thread Uma Maheswara Rao G (Commented) (JIRA)

[ 
https://issues.apache.org/jira/browse/HDFS-2720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=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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[jira] [Commented] (HDFS-2720) HA : TestStandbyIsHot is failing while copying in_use.lock file from NN1 to NN2

2011-12-23 Thread Uma Maheswara Rao G (Commented) (JIRA)

[ 
https://issues.apache.org/jira/browse/HDFS-2720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13175375#comment-13175375
 ] 

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

One way to fix this is, we can just skip the in_use.lock file from copying the 
NamespaceDirs.
Other way could be, manage the clusterID to be insync between active and format 
all as initial as real clusters does.

@Todd, i want to know how we planned to sync the cluster id between active and 
standby nodes here.

 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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