[
https://issues.apache.org/jira/browse/HIVE-7800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14108198#comment-14108198
]
Daniel Weeks commented on HIVE-7800:
------------------------------------
The previous implementation had an issue that is only triggered in rare cases
where the first split of a task does not contain a row group. This forces the
initialization of the value of the input format to be the size of the table
(ArrayWritable), but the next row group will produce a value only as wide the
columns available in the file.
The new patch pads the resolved schema to ensure a matching size and masks the
name of the column so there no possibility of conflict with named columns
within the file.
> Parqet Column Index Access Schema Size Checking
> -----------------------------------------------
>
> Key: HIVE-7800
> URL: https://issues.apache.org/jira/browse/HIVE-7800
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.14.0
> Reporter: Daniel Weeks
> Assignee: Daniel Weeks
> Attachments: HIVE-7800.1.patch, HIVE-7800.2.patch
>
>
> In the case that a parquet formatted table has partitions where the files
> have different size schema, using column index access can result in an index
> out of bounds exception.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
