Csaba Ringhofer created IMPALA-7086:
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Summary: Cache timezone name look ups
Key: IMPALA-7086
URL: https://issues.apache.org/jira/browse/IMPALA-7086
Project: IMPALA
Issue Type: Improvement
Components: Backend
Reporter: Csaba Ringhofer
to/from_utc_timestamp looks up time zones by name during every invocation, even
if the timezone parameter is constant. Avoiding this lookup if time zone name
is the same as during the last call (in the fragment) could speed up time zone
conversions.
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