wuyi created SPARK-35275:
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Summary: Add checksum for shuffle blocks
Key: SPARK-35275
URL: https://issues.apache.org/jira/browse/SPARK-35275
Project: Spark
Issue Type: New Feature
Components: Spark Core
Affects Versions: 3.2.0
Reporter: wuyi
Shuffle data corruption is a long-standing issue in Spark. For example, in
SPARK-18105, people continually reports corruption issue. However, data
corruption is difficult to reproduce in most cases and even harder to tell the
root cause. We don't know if it's a Spark issue or not. With the checksum
support for the shuffle, Spark itself can at least distinguish the cause
between disk and network, which is very important for users.
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