Quanlong Huang created IMPALA-10075:
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Summary: Reuse existing instances of unchanged partitions in
REFRESH
Key: IMPALA-10075
URL: https://issues.apache.org/jira/browse/IMPALA-10075
Project: IMPALA
Issue Type: Improvement
Reporter: Quanlong Huang
Assignee: Quanlong Huang
It's revealed by IMPALA-3127 that REFRESH will always update all partition
instances (at least after IMPALA-9778). We should check if the new partition
instance is the same as the original one, and only update them when needs. This
reduce unneccessary catalog updates.
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