Joe McDonnell created IMPALA-9556:
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Summary: Add tests for interactions between metadata operations
and the data cache
Key: IMPALA-9556
URL: https://issues.apache.org/jira/browse/IMPALA-9556
Project: IMPALA
Issue Type: Test
Components: Backend
Affects Versions: Impala 4.0
Reporter: Joe McDonnell
Both the data cache and the file handle cache need to handle different versions
of a file (e.g. if a file is overwritten or appended). They use the
modification time to make distinctions between different versions of the file.
The modification times are going to come from the metadata.
We should have tests the integrate various metadata operations and
configurations with the data cache to verify that the data cache continues to
have the appropriate hit rate after unrelated metadata operations. This would
help verify that modification times don't change unnecessarily.
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