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Posted to issues-all@impala.apache.org by "Quanlong Huang (JIRA)" <ji...@apache.org> on 2019/08/17 14:28:00 UTC

[jira] [Updated] (IMPALA-7312) Non-blocking mode for Fetch() RPC

     [ https://issues.apache.org/jira/browse/IMPALA-7312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Quanlong Huang updated IMPALA-7312:
-----------------------------------
    Target Version: Impala 3.4.0  (was: Impala 3.3.0)

> Non-blocking mode for Fetch() RPC
> ---------------------------------
>
>                 Key: IMPALA-7312
>                 URL: https://issues.apache.org/jira/browse/IMPALA-7312
>             Project: IMPALA
>          Issue Type: Sub-task
>          Components: Clients
>            Reporter: Tim Armstrong
>            Priority: Major
>              Labels: resource-management
>
> Currently Fetch() can block for an arbitrary amount of time until a batch of rows is produced. It might be helpful to have a mode where it returns quickly when there is no data available, so that threads and RPC slots are not tied up.



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