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https://issues.apache.org/jira/browse/HDFS-13638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16494689#comment-16494689
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He Xiaoqiao commented on HDFS-13638:
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[~jojochuang], I met this problem in apache-2.7.1, IIUC, it may be relevant to
HDFS-10453, FYI.
> DataNode Can't replicate block because NameNode thinks the length is
> 9223372036854775807
> ----------------------------------------------------------------------------------------
>
> Key: HDFS-13638
> URL: https://issues.apache.org/jira/browse/HDFS-13638
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Reporter: Wei-Chiu Chuang
> Priority: Major
>
> I occasionally find the following warning in CDH clusters, but haven't
> figured out why. Thought I should better raise the issue anyway.
> {quote}
> 2018-05-29 09:15:58,092 WARN org.apache.hadoop.hdfs.server.datanode.DataNode:
> Can't replicate block
> BP-725378529-10.0.0.8-1410027444173:blk_13276745777_1112363330268 because
> on-disk length 175085 is shorter than NameNode recorded length
> 9223372036854775807
> {quote}
> Infact, 9223372036854775807 = Long.MAX_VALUE.
> Chasing in the HDFS codebase but didn't find where this length could come from
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