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https://issues.apache.org/jira/browse/HIVE-20363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16582858#comment-16582858
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Vihang Karajgaonkar commented on HIVE-20363:
--------------------------------------------
I think it would be good to give some motivation as to why we are making this
change and the results of this improvement in the Jira description since this
change is possibly going to affect almost all the table entries at the schema
level.
> Use integer constants for frequently used serde classes.
> --------------------------------------------------------
>
> Key: HIVE-20363
> URL: https://issues.apache.org/jira/browse/HIVE-20363
> Project: Hive
> Issue Type: Improvement
> Components: Metastore, Standalone Metastore
> Reporter: Anurag Mantripragada
> Assignee: Anurag Mantripragada
> Priority: Major
>
> Serde libraries are stored as fully qualified class names which are long
> strings, we can get improvements in I/O and storage if we store integer
> constants for frequently used serde classes in the backend DB.
> For example:
> {code:java}
> org.apache.hadoop.hive.serde2.avro.AvroSerDe"---> 1
> parquet.hive.serde.ParquetHiveSerDe" ---> 2
> ...{code}
>
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