[jira] [Resolved] (DRILL-4664) ScanBatch.isNewSchema() returns wrong result for map datatype

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

     [ https://issues.apache.org/jira/browse/DRILL-4664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arina Ielchiieva resolved DRILL-4664.
-------------------------------------
       Resolution: Fixed
    Fix Version/s: 1.8.0

Fixed with commid id 05c42eae79ce3e309028b3824f9449b98e329f29.

> ScanBatch.isNewSchema() returns wrong result for map datatype
> -------------------------------------------------------------
>
>                 Key: DRILL-4664
>                 URL: https://issues.apache.org/jira/browse/DRILL-4664
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Flow
>    Affects Versions: 1.6.0
>            Reporter: Vitalii Diravka
>            Assignee: Vitalii Diravka
>            Priority: Minor
>             Fix For: 1.8.0
>
>
> isNewSchema() method checks if top-level schema or any of the deeper map schemas has changed. The last one doesn't work properly with count function.
> "deeperSchemaChanged" equals true even when two map strings have the same children fields.
> Discovered while trying to fix [DRILL-2385|DRILL-2385].
> Dataset test.json for reproducing (MAP<REQUIRED> datatype object):
> {code}{"oooi":{"oa":{"oab":{"oabc":1}}}}{code}
> Example of query:
> {code}select count(t.oooi) from dfs.tmp.`test.json` t{code}



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