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https://issues.apache.org/jira/browse/DRILL-3993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16300023#comment-16300023
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ASF GitHub Bot commented on DRILL-3993:
---------------------------------------

Github user vvysotskyi commented on a diff in the pull request:

    https://github.com/apache/drill/pull/1066#discussion_r158261430
  
    --- Diff: exec/java-exec/src/test/resources/record/test_recorditerator.json 
---
    @@ -60,7 +60,7 @@
             @id:2,
             child:1,
             pop:"project",
    -        exprs:[ { ref : "`*`", expr : "`*`"} ]
    +        exprs:[ { ref : "`**`", expr : "`**`"} ]
    --- End diff --
    
    This change connected with commit `[CALCITE-1150] Add dynamic record type 
and dynamic star for schema-on-read table`. `**` is used as the dynamic star 
column name prefix. It is equivalent to `*` in our Drill-Calcite 1.4.0.


> Rebase Drill on Calcite master branch
> -------------------------------------
>
>                 Key: DRILL-3993
>                 URL: https://issues.apache.org/jira/browse/DRILL-3993
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 1.2.0
>            Reporter: Sudheesh Katkam
>            Assignee: Roman Kulyk
>
> Calcite keeps moving, and now we need to catch up to Calcite 1.5, and ensure 
> there are no regressions.
> Also, how do we resolve this 'catching up' issue in the long term?



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