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https://issues.apache.org/jira/browse/SPARK-39202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-39202:
------------------------------------

    Assignee:     (was: Apache Spark)

> Introduce a `putByteArrays` method to `WritableColumnVector` to support 
> setting multiple duplicate `byte[]`
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-39202
>                 URL: https://issues.apache.org/jira/browse/SPARK-39202
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.4.0
>            Reporter: Yang Jie
>            Priority: Minor
>
> Add a  `putByteArrays` method to `WritableColumnVector`
>  
> {code:java}
> int putByteArrays(int rowId, int total, byte[] value) {code}
>  
>  
> this method used to support setting multiple duplicate `byte[]` to 
> `WritableColumnVector`.
> Since `byte[] value` is fixed length, memory can allocated at one time 
> without calling `
> reserve(int requiredCapacity)` method many times.
>  
> This method is applicable to `ColumnVectorUtils.populate` method with 
> `StringType` and partial `DecimalType` scenario, this corresponds to the 
> Vectorized Partition Column filling of Parquet and Orc
>  



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