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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-18899) Separate FetchWork required for each query that uses the results cache
Date Wed, 07 Mar 2018 23:44:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-18899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gopal V updated HIVE-18899:
---------------------------
    Labels: performance  (was: )

> Separate FetchWork required for each query that uses the results cache
> ----------------------------------------------------------------------
>
>                 Key: HIVE-18899
>                 URL: https://issues.apache.org/jira/browse/HIVE-18899
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 3.0.0
>            Reporter: Jason Dere
>            Assignee: Jason Dere
>            Priority: Major
>              Labels: performance
>         Attachments: HIVE-18899.1.patch
>
>
> [~gopalv] found issues when running lots of concurrent queries against HS2 with the query
cache. Looks like the FetchWork held by the results cache cannot be shared between multiple
queries because it contains a ListSinkOperator that is used to hold the results of a fetch.



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