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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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Huanli Wang updated SPARK-54118:
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Issue Type: Improvement (was: Bug)
> 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
> Priority: Major
>
> 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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