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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