Josh Rosen created SPARK-4555:
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Summary: Add forward compatibility tests to JsonProtocol
Key: SPARK-4555
URL: https://issues.apache.org/jira/browse/SPARK-4555
Project: Spark
Issue Type: Improvement
Components: Spark Core
Reporter: Josh Rosen
The web UI / event listener's JsonProtocol is designed to be backwards- and
forwards-compatible: newer versions of Spark should be able to consume event
logs written by older versions and vice-versa.
We currently have backwards-compatibility tests for the "newer version reads
older log" case; this JIRA tracks progress for adding the opposite
forwards-compatibility tests.
This type of test could be non-trivial to write, since I think we'd need to
actually run a script against multiple compiled Spark releases, so this test
might need to sit outside of Spark Core itself as part of an integration
testing suite.
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