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https://issues.apache.org/jira/browse/SPARK-54118?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anish Shrigondekar resolved SPARK-54118.
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Fix Version/s: 4.1.0
Resolution: Fixed
Issue resolved by pull request 52820
[https://github.com/apache/spark/pull/52820]
> Improve the put/merge operation in ListState when t here are multiple values
> ----------------------------------------------------------------------------
>
> Key: SPARK-54118
> URL: https://issues.apache.org/jira/browse/SPARK-54118
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 4.1.0
> Reporter: Huanli Wang
> Assignee: Huanli Wang
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.1.0
>
>
> In SS TWS, when we do the {{put(array)}} operation in liststate, we put the
> first element and then merge the remaining elements one by one. so if we want
> to put an array with 100 elements, it means we need do 1 put + 99 merges.
> This can result in worse performance than a single put operation for the
> entire array.
>
> Similar, we have the same issue in {{merge(array)}}
>
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