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https://issues.apache.org/jira/browse/HADOOP-4735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12651179#action_12651179
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Konstantin Shvachko commented on HADOOP-4735:
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> I restarted the namenode, with no success.
Do you still see the blocks on the data-nodes after restarting?
In 0.17 there was no so called lease recovery for files that were not closed
properly.
Do you know whether the 0-size files were closed before becoming empty?
> NameNode reporting 0 size for originally non-empty files
> --------------------------------------------------------
>
> Key: HADOOP-4735
> URL: https://issues.apache.org/jira/browse/HADOOP-4735
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.17.2
> Reporter: Christian Kunz
>
> NameNode reports 0 size for a handful of files that were non-empty originally.
> The corresponding blocks on the DataNodes are non-empty.
> NameNode must have reported correct size at some time, because applications
> that would have failed with 0 size files, executed successfully.
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