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Posted to issues@tez.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2016/04/29 17:24:12 UTC

[jira] [Created] (TEZ-3237) Corrupted shuffle transfers to disk are not detected during transfer

Jason Lowe created TEZ-3237:
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             Summary: Corrupted shuffle transfers to disk are not detected during transfer
                 Key: TEZ-3237
                 URL: https://issues.apache.org/jira/browse/TEZ-3237
             Project: Apache Tez
          Issue Type: Bug
    Affects Versions: 0.7.0
            Reporter: Jason Lowe


When a shuffle transfer is larger than the single transfer limit it gets written straight to disk during the transfer.  Unfortunately there are no checksum validations performed during that transfer, so if the data is corrupted at the source or during transmit it goes undetected.  Only later when the task tries to consume the transferred data is the error detected, but at that point it's too late to blame the source task for the error.



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