Zsombor Fedor created IMPALA-8602:
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Summary: Client level transparency of Admission Control resource
limits
Key: IMPALA-8602
URL: https://issues.apache.org/jira/browse/IMPALA-8602
Project: IMPALA
Issue Type: New Feature
Components: Clients
Reporter: Zsombor Fedor
When resource limits apply to a group of users via {{fair-scheduler.xml}} and
{{llama-site.xml}}, if the users have no access to these files or the UIs where
you can manage these, they have no way to tell what limits apply to them.
With the limits set locally, (ex.: {{SET MEM_LIMIT=1073741824;}}), one can tell
the resource limits applied via the {{SET;}} query. But when Admission Control
manages these limits, the output of the {{SET;}} statement is not helpful,
because for a query the planner itself picking the {{fair-scheduler.xml}} and
{{llama-site.xml}} files up.
There is also a misleading sentence in the DOCS regarding this issue:
{quote}The {{SET}} statement specifies values for query options that control
the runtime behavior of other statements within the same session.
{quote}
This sentence clearly does not apply when Admission Control enabled, explained
above.
A new statement/function would be great, whereby the users could examine the
resource limits apply to them from the client side.
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