[jira] [Commented] (DRILL-1660) JSON : selecting from an array of empty, null maps results in an exception

["Rahul Challapalli (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-1660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14202747#comment-14202747 ] 

Rahul Challapalli commented on DRILL-1660:
------------------------------------------

Instead of Opening multiple JIRA's, I am updating this JIRA with other use-cases which look similar to this one. 

> JSON : selecting from an array of empty, null maps results in an exception
> --------------------------------------------------------------------------
>
>                 Key: DRILL-1660
>                 URL: https://issues.apache.org/jira/browse/DRILL-1660
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - JSON
>            Reporter: Rahul Challapalli
>            Assignee: Jason Altekruse
>         Attachments: error.log
>
>
> git.commit.id.abbrev=60aa446
> I ran the below test against the branch from Jason's github fork which has some patches for bugs related to flatten which are not yet merged into the master.
> Dataset used :
> {code}
> {
>   "id":1,
>   "evnts":[
>     {},
>     {"key":null}
>   ]
> }
> {code}
> The below query fails :
> {code}
> select id, evnts from `json_kvgenflatten/empty-null-map.json`;
> +------------+------------+
> |     id     |   evnts    |
> +------------+------------+
> java.lang.IndexOutOfBoundsException: DrillBuf(ridx: 0, widx: 0, cap: 0/0, unwrapped: DrillBuf(ridx: 0, widx: 17, cap: 17/17, unwrapped: DrillBuf(ridx: 103, widx: 103, cap: 103/103, unwrapped: UnsafeDirectLittleEndian(PooledUnsafeDirectByteBuf(ridx: 0, widx: 0, cap: 103/103))))).slice(0, 8)
> 	at io.netty.buffer.DrillBuf.<init>(DrillBuf.java:94)
> 	at io.netty.buffer.DrillBuf.slice(DrillBuf.java:293)
> 	at org.apache.drill.exec.vector.UInt4Vector.load(UInt4Vector.java:179)
> 	at org.apache.drill.exec.vector.complex.RepeatedMapVector.load(RepeatedMapVector.java:417)
> 	at org.apache.drill.exec.record.RecordBatchLoader.load(RecordBatchLoader.java:91)
> 	at org.apache.drill.jdbc.DrillCursor.next(DrillCursor.java:102)
> 	at net.hydromatic.avatica.AvaticaResultSet.next(AvaticaResultSet.java:187)
> 	at sqlline.SqlLine$IncrementalRows.hasNext(SqlLine.java:2503)
> 	at sqlline.SqlLine$TableOutputFormat.print(SqlLine.java:2148)
> 	at sqlline.SqlLine.print(SqlLine.java:1809)
> 	at sqlline.SqlLine$Commands.execute(SqlLine.java:3766)
> 	at sqlline.SqlLine$Commands.sql(SqlLine.java:3663)
> 	at sqlline.SqlLine.dispatch(SqlLine.java:889)
> 	at sqlline.SqlLine.begin(SqlLine.java:763)
> 	at sqlline.SqlLine.start(SqlLine.java:498)
> 	at sqlline.SqlLine.main(SqlLine.java:460)
> {code}
> I attached the error log. Let me know if you need anything else



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