[IMPALA-9614] Disable error logging for all re2 library usage. - ASF JIRA

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Details

Type: Improvement
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: Impala 3.4.0
Fix Version/s: None
Component/s: Backend
Labels:
None

Epic Color:
ghx-label-9

Description

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.