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https://issues.apache.org/jira/browse/HIVE-20363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16576740#comment-16576740
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Alexander Kolbasov commented on HIVE-20363:
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Note that the same optimization can be applied to input and output formats, but
this can be handled separately.
> 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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