Riza Suminto created IMPALA-13566:
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Summary: Expose query cancellation status to UDF interface
Key: IMPALA-13566
URL: https://issues.apache.org/jira/browse/IMPALA-13566
Project: IMPALA
Issue Type: Improvement
Components: Backend
Reporter: Riza Suminto
Some Impala UDF implementation can be complex and time consuming. If UDF
evaluation happen in uninterruptible call path like in Scan Predicate
evaluation, UDF may block query fragment cancellation for long time. We should
consider exposing query cancellation status to UDF interface. UDF
implementation can periodically check for this status and fail fast upon
finding cancellation.
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