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Posted to issues@flink.apache.org by "Arvid Heise (Jira)" <ji...@apache.org> on 2021/06/15 06:02:00 UTC
[jira] [Commented] (FLINK-21389) ParquetInputFormat should not need
parquet schema as user input
[ https://issues.apache.org/jira/browse/FLINK-21389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17363389#comment-17363389 ]
Arvid Heise commented on FLINK-21389:
-------------------------------------
Merged into 1.13 as 4780b5d98e53c7a1cbabf2092b38d4e84fed3b32.
> ParquetInputFormat should not need parquet schema as user input
> ---------------------------------------------------------------
>
> Key: FLINK-21389
> URL: https://issues.apache.org/jira/browse/FLINK-21389
> Project: Flink
> Issue Type: Bug
> Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
> Reporter: Etienne Chauchot
> Assignee: Etienne Chauchot
> Priority: Major
> Labels: pull-request-available
>
> _ParquetInputFormat_ takes parquet schema as user input but after split it reads the parquet schema again here [https://github.com/apache/flink/blob/52dcf439bb0b8d613fff1efecf015052d5b3a10b/flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/ParquetInputFormat.java#L170]
> it should read the provided user schema.
> But better would be to read the schema automatically and not require the user to provide a schema as spark does ([https://spark.apache.org/docs/latest/sql-data-sources-parquet.html]).
> Thus we could add a _ParquetInputFormat_ constructor and allow _ParquetTableSource_ with no schema parameter
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