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Posted to common-dev@hadoop.apache.org by "Dave Thompson (JIRA)" <ji...@apache.org> on 2012/08/15 17:22:38 UTC

[jira] [Created] (HADOOP-8703) distcpV2: turn CRC checking off for 0 byte size

Dave Thompson created HADOOP-8703:
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             Summary: distcpV2: turn CRC checking off for 0 byte size
                 Key: HADOOP-8703
                 URL: https://issues.apache.org/jira/browse/HADOOP-8703
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 0.23.3
            Reporter: Dave Thompson
            Assignee: Dave Thompson
             Fix For: 0.23.3


DistcpV2 (hadoop-tools/hadoop-distcp/..) can fail from checksum failure, sometimes when copying a 0 byte file. Root cause of this may have to do with an inconsistent nature of HDFS when creating 0 byte files, however distcp can avoid this issue by not checking CRC when size is zero.

This issue was reported as part of HADOOP-8233, though it seems like a better idea to treat this particular aspect on it's own.

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