Gopal V created HIVE-20419:
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Summary: Vectorization: Speed up
VectorizationDispatcher.validateInputFormatAndSchemaEvolution() for ACIDv2
Key: HIVE-20419
URL: https://issues.apache.org/jira/browse/HIVE-20419
Project: Hive
Issue Type: Bug
Reporter: Gopal V
With ACID table, the format and schema layouts are much more strictly
controlled - the table cannot be made of partial ORC and partial RCFile.
This assumption can remove this loop and the slow check for schema between each
partition before vectorizing the operators - the worst-case performance is the
common & correct case, where all of them match.
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