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https://issues.apache.org/jira/browse/HIVE-24503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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mahesh kumar behera resolved HIVE-24503.
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Resolution: Fixed
> Optimize vector row serde by avoiding type check at run time
> -------------------------------------------------------------
>
> Key: HIVE-24503
> URL: https://issues.apache.org/jira/browse/HIVE-24503
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: mahesh kumar behera
> Assignee: mahesh kumar behera
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Serialization/Deserialization of vectorized batch done at VectorSerializeRow
> and VectorDeserializeRow does a type checking for each column of each row.
> This becomes very costly when there are billions of rows to read/write. This
> can be optimized if the type check is done during init time and specific
> reader/writer classes are created. This classes can be used directly stored
> in filed structure to avoid run time type check.
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