Attila Jeges created IMPALA-9614:
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Summary: Disable error logging for all re2 library usage.
Key: IMPALA-9614
URL: https://issues.apache.org/jira/browse/IMPALA-9614
Project: IMPALA
Issue Type: Improvement
Components: Backend
Affects Versions: Impala 3.4.0
Reporter: Attila Jeges
Impala uses the re2 library for a number of purposes:
- Built-in functions : REGEXP_REPLACE, REGEXP_EXTRACT, REGEXP_LIKE
- SQL operators: REGEXP, RLIKE, LIKE
- Log and query redaction.
Logging errors is disabled for REGEXP_REPLACE and REGEXP_EXTRACT built-in
functions. In all other cases logging errors is enabled. Right now this
behavior is hard-coded and not configurable. In case every row causes an error,
this can be problematic as re2 errors will flood the impala error logs.
We should disable error logging for all re2 library usage or make it
configurable through an Impala startup flag.
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