[jira] [Created] (IMPALA-10036) Admission control incorrectly rejecting query based on coordinator limit

["David Rorke (Jira)" <ji...@apache.org>]

David Rorke created IMPALA-10036:
------------------------------------

             Summary: Admission control incorrectly rejecting query based on coordinator limit
                 Key: IMPALA-10036
                 URL: https://issues.apache.org/jira/browse/IMPALA-10036
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 4.0
            Reporter: David Rorke


Admission control rejected a query with the following error:
{noformat}
ERROR: Rejected query from pool root.default: request memory needed 50.00 GB is greater than memory available for admission 45.36 GB of coordinator-0:22050.
{noformat}

The query profile shows the following resource estimates:
{noformat}
Per-Host Resource Estimates: Memory=303.36GB
Dedicated Coordinator Resource Estimate: Memory=136MB
{noformat}

The max query memory limit for the pool was configured as 50 GB.

Based on the coordinator resource estimate of 136 MB the query should have easily fit in the available coordinator memory.  [~tarmstrong] speculated that we might simply be comparing the wrong resource estimate to the coordinator limit.



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