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https://issues.apache.org/jira/browse/HDFS-4916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated HDFS-4916:
-----------------------------------
Priority: Critical (was: Blocker)
> DataTransfer may mask the IOException during block transfering
> --------------------------------------------------------------
>
> Key: HDFS-4916
> URL: https://issues.apache.org/jira/browse/HDFS-4916
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.0.4-alpha, 2.0.5-alpha
> Reporter: Zesheng Wu
> Priority: Critical
> Attachments: 4916.v0.patch
>
>
> When a new datanode is added to the pipeline, the client will trigger the
> block transfer process. In the current implementation, the src datanode calls
> the run() method of the DataTransfer to transfer the block, this method will
> mask the IOExceptions during the transfering, and will make the client not
> realize the failure during the transferring, as a result the client will
> mistake the failing transferring as successful one.
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