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Posted to issues@calcite.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/09/04 22:46:00 UTC

[jira] [Updated] (CALCITE-3324) Infinite loop when calling DDL from remote Avatica driver to LocalService wrapping CalciteMetaImpl

     [ https://issues.apache.org/jira/browse/CALCITE-3324?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated CALCITE-3324:
------------------------------------
    Labels: pull-request-available  (was: )

> Infinite loop when calling DDL from remote Avatica driver to LocalService wrapping CalciteMetaImpl
> --------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-3324
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3324
>             Project: Calcite
>          Issue Type: Bug
>    Affects Versions: 1.20.0
>            Reporter: Robert Yokota
>            Priority: Major
>              Labels: pull-request-available
>
> I encountered an infinite loop when submitting DDL from a remote Avatica driver (using sqlline) against a LocalService wrapping CalciteMetaImpl.
> I was able to debug the issue and verified a fix.
> The problem was that in CalciteMetaImpl.prepareAndExecute, the updateCount is not being passed to the MetaResultSetImpl constructor.  Instead, the updateCount is always set to -1.  This incorrectly instructs the remote Avatica driver to fetch results when there aren't any, which causes it to loop.
> By fixing the CalciteMetaImpl.prepareAndExecute method to set the updateCount in MetaResultSetImpl, I was able to fix the infinite loop.



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