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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-18920) CBO: Initialize the Janino providers ahead of 1st query
Date Fri, 01 Mar 2019 08:09:00 GMT


Hive QA commented on HIVE-18920:

Here are the results of testing the latest attachment:

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:green}SUCCESS:{color} +1 due to 15824 tests passed

Test results:
Console output:
Test logs:

Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase

This message is automatically generated.

ATTACHMENT ID: 12960675 - PreCommit-HIVE-Build

> CBO: Initialize the Janino providers ahead of 1st query
> -------------------------------------------------------
>                 Key: HIVE-18920
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Gopal V
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>         Attachments: HIVE-18920.01.patch, HIVE-18920.02.patch, HIVE-18920.patch
> Hive Calcite metadata providers are compiled when the 1st query comes in.
> If a second query arrives before the 1st one has built a metadata provider, it will also
try to do the same thing, because the cache is not populated yet.
> With 1024 concurrent users, it takes 6 minutes for the 1st query to finish fighting all
the other queries which are trying to load that cache.

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