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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-743) file size is fluctuating although file is closed
Date Tue, 22 Jun 2010 05:03:29 GMT

    [ https://issues.apache.org/jira/browse/HDFS-743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12881066#action_12881066

dhruba borthakur commented on HDFS-743:

This problem occurs only in 0.17 release of Hadoop. It problem does not exist in later hadoop

> file size is fluctuating although file is closed
> ------------------------------------------------
>                 Key: HDFS-743
>                 URL: https://issues.apache.org/jira/browse/HDFS-743
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>            Priority: Blocker
>         Attachments: fluctuatingFileSize_0.17.txt
> I am seeing that the length of a file sometimes becomes zero after a namenode restart.
These files have only one block. All the three replicas of that block on the datanode(s) has
non-zero size. Increasing the replication factor of the file causes the file to show its correct
non-zero length.
> I am marking this as a blocker because it is still to be investigated which releases
it affects. I am seeing this on 0.17.x very frequently. I might have seen this on 0.20.x but
do not have a reproducible case yet.

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