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Posted to hdfs-dev@hadoop.apache.org by "dhruba borthakur (JIRA)" <ji...@apache.org> on 2010/02/18 22:11:27 UTC
[jira] Created: (HDFS-988) saveNamespace can corrupt edits log
saveNamespace can corrupt edits log
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Key: HDFS-988
URL: https://issues.apache.org/jira/browse/HDFS-988
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Reporter: dhruba borthakur
The adminstrator puts the namenode is safemode and then issues the savenamespace command. This can corrupt the edits log. The problem is that when the NN enters safemode, there could still be pending logSycs occuring from other threads. Now, the saveNamespace command, when executed, would save a edits log with partial writes. I have seen this happen on 0.20.
https://issues.apache.org/jira/browse/HDFS-909?focusedCommentId=12828853&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12828853
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