Zoltán Borók-Nagy created IMPALA-13934:
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Summary: Do quick pointer comparison in IcebergDeleteBuilder
Key: IMPALA-13934
URL: https://issues.apache.org/jira/browse/IMPALA-13934
Project: IMPALA
Issue Type: Improvement
Components: Backend
Reporter: Zoltán Borók-Nagy
Assignee: Zoltán Borók-Nagy
Since IMPALA-13194 file paths are deduplicated in the serialized position
delete records.
Therefore we could do a quick check pointer-based comparison of subsequent
position delete records instead of the costly string compare.
If the pointers don't match we still need to check the strings for equality
because position records coming from different sender can be coalesced into a
single row batch by the exchange receiver.
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