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https://issues.apache.org/jira/browse/SPARK-34270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17273155#comment-17273155
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Apache Spark commented on SPARK-34270:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/31369
> Combine StateStoreMetrics should not override individual
> StateStoreCustomMetric
> -------------------------------------------------------------------------------
>
> Key: SPARK-34270
> URL: https://issues.apache.org/jira/browse/SPARK-34270
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 2.3.4, 2.4.7, 3.0.1, 3.2.0, 3.1.2
> Reporter: L. C. Hsieh
> Assignee: L. C. Hsieh
> Priority: Major
>
> For stateful join in structured streaming, we need to combine
> StateStoreMetrics from both left and right side. Currently we simply take
> arbitrary one from custom metrics with same name from left and right. By
> doing this we miss half of metric number.
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