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https://issues.apache.org/jira/browse/SPARK-21192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16060699#comment-16060699
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Apache Spark commented on SPARK-21192:
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User 'tdas' has created a pull request for this issue:
https://github.com/apache/spark/pull/18402
> Preserve State Store provider class configuration across StreamingQuery
> restarts
> --------------------------------------------------------------------------------
>
> Key: SPARK-21192
> URL: https://issues.apache.org/jira/browse/SPARK-21192
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 2.3.0
> Reporter: Tathagata Das
> Assignee: Tathagata Das
>
> If the SQL conf for StateStore provider class is changed between restarts
> (i.e. query started with providerClass1 and attempted to restart using
> providerClass2), then the query will fail in a unpredictable way as files
> saved by one provider class cannot be used by the newer one.
> Ideally, the provider class used to start the query should be used to restart
> the query, and the configuration in the session where it is being restarted
> should be ignored.
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