[
https://issues.apache.org/jira/browse/DRILL-7509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17020446#comment-17020446
]
ASF GitHub Bot commented on DRILL-7509:
---------------------------------------
KazydubB commented on issue #1954: DRILL-7509: Incorrect TupleSchema is created
for DICT column when querying Parquet files
URL: https://github.com/apache/drill/pull/1954#issuecomment-576807360
@paul-rogers, I've left comments under your comments, hope this clarifies
the chosen approach.
@ihuzenko, I've addressed your comments.
Thank you both for the review, please take a look again.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
> Incorrect TupleSchema is created for DICT column when querying Parquet files
> ----------------------------------------------------------------------------
>
> Key: DRILL-7509
> URL: https://issues.apache.org/jira/browse/DRILL-7509
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.16.0
> Reporter: Bohdan Kazydub
> Assignee: Bohdan Kazydub
> Priority: Major
> Fix For: 1.18.0
>
>
> When {{DICT}} column is queried from Parquet file, its {{TupleSchema}}
> contains nested element, e.g. `map`, itself contains `key` and `value`
> fields, rather than containing the `key` and `value` fields in the {{DICT}}'s
> {{TupleSchema}} itself. The nested element, `map`, comes from the inner
> structure of Parquet's {{MAP}} (which corresponds to Drill's {{DICT}})
> representation.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
