Quanlong Huang created IMPALA-13063:
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Summary: HTTP requests on in-flight queries blocks query execution
in coordinator side
Key: IMPALA-13063
URL: https://issues.apache.org/jira/browse/IMPALA-13063
Project: IMPALA
Issue Type: Bug
Components: Backend
Reporter: Quanlong Huang
This is a follow-up task for IMPALA-13034.
HTTP requests on in-flight queries usually acquire the lock of
ClientRequestState. This could blocks client requests in fetching query
results. E.g. there are several endpoints in WebUI that can dump a query
profile: /query_profile, /query_profile_encoded, /query_profile_plain_text,
/query_profile_json. If the profile is huge, such requests impact the query
performance.
Fetching the details (profile, exec summary, etc.) of an in-flight query has
lower priority and shouldn't block query execution.
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