Commit 9498e52
[SPARK-23355][SQL][DOC][FOLLOWUP] Add migration doc for TBLPROPERTIES
## What changes were proposed in this pull request?
In Apache Spark 2.4, [SPARK-23355](https://issues.apache.org/jira/browse/SPARK-23355) fixes a bug which ignores table properties during convertMetastore for tables created by STORED AS ORC/PARQUET.
For some Parquet tables having table properties like TBLPROPERTIES (parquet.compression 'NONE'), it was ignored by default before Apache Spark 2.4. After upgrading cluster, Spark will write uncompressed file which is different from Apache Spark 2.3 and old.
This PR adds a migration note for that.
## How was this patch tested?
N/A
Author: Dongjoon Hyun <[email protected]>
Closes #21269 from dongjoon-hyun/SPARK-23355-DOC.1 parent e3de6ab commit 9498e52
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