[jira] [Commented] (HIVE-6575) select * fails on parquet table with map datatype

["Xuefu Zhang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-6575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13924463#comment-13924463 ] 

Xuefu Zhang commented on HIVE-6575:
-----------------------------------

Thanks for working on this, [~szehon]. I have left some minor comments on RB for your consideration.

> select * fails on parquet table with map datatype
> -------------------------------------------------
>
>                 Key: HIVE-6575
>                 URL: https://issues.apache.org/jira/browse/HIVE-6575
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>    Affects Versions: 0.13.0
>            Reporter: Szehon Ho
>            Assignee: Szehon Ho
>              Labels: parquet
>         Attachments: HIVE-6575.2.patch, HIVE-6575.patch
>
>
> Create parquet table with map and run select * from parquet_table, returns following exception:
> {noformat}
>  FAILED: RuntimeException java.lang.ClassCastException: org.apache.hadoop.hive.ql.io.parquet.serde.DeepParquetHiveMapInspector cannot be cast to org.apache.hadoop.hive.ql.io.parquet.serde.StandardParquetHiveMapInspector
> {noformat}
> However select <mapcol> from parquet_table seems to work, and thus joins will work.



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