[jira] [Updated] (DRILL-7311) Partial fixes for empty batch bugs

["Arina Ielchiieva (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-7311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arina Ielchiieva updated DRILL-7311:
------------------------------------
    Fix Version/s:     (was: 1.17.0)
                   1.18.0

> Partial fixes for empty batch bugs
> ----------------------------------
>
>                 Key: DRILL-7311
>                 URL: https://issues.apache.org/jira/browse/DRILL-7311
>             Project: Apache Drill
>          Issue Type: Bug
>    Affects Versions: 1.16.0
>            Reporter: Paul Rogers
>            Assignee: Paul Rogers
>            Priority: Major
>             Fix For: 1.18.0
>
>
> DRILL-7305 explains that multiple operators have serious bugs when presented with empty batches. DRILL-7306 explains that the EVF (AKA "new scan framework") was originally coded to emit an empty "fast schema" batch, but that the feature was disabled because of the many empty-batch operator failures.
> This ticket covers a set of partial fixes for empty-batch issues. This is the result of work done to get the converted JSON reader to work with a "fast schema." The JSON work, in the end, revealed that Drill has too many bugs to enable fast schema, and so the DRILL-7306 was implemented instead.



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