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https://issues.apache.org/jira/browse/HDFS-1001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12840048#action_12840048
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bc Wong commented on HDFS-1001:
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I have a patch. But I can't assign this issue to myself. Could someone please
fix Jira to let me work on it? Thanks.
> DataXceiver and BlockReader disagree on when to send/recv CHECKSUM_OK
> ---------------------------------------------------------------------
>
> Key: HDFS-1001
> URL: https://issues.apache.org/jira/browse/HDFS-1001
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.22.0
> Reporter: bc Wong
>
> Running the TestPread with additional debug statements reveals that the
> BlockReader sends CHECKSUM_OK when the DataXceiver doesn't expect it.
> Currently it doesn't matter since DataXceiver closes the connection after
> each op, and CHECKSUM_OK is the last thing on the wire. But if we want to
> cache connections, they need to agree on the exchange of CHECKSUM_OK.
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