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Posted to issues@spark.apache.org by "Jungtaek Lim (Jira)" <ji...@apache.org> on 2023/08/01 19:54:00 UTC
[jira] [Assigned] (SPARK-44480) Add option for thread pool to perform maintenance for RocksDB/HDFS State Store Providers
[ https://issues.apache.org/jira/browse/SPARK-44480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jungtaek Lim reassigned SPARK-44480:
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Assignee: Eric Marnadi
> Add option for thread pool to perform maintenance for RocksDB/HDFS State Store Providers
> ----------------------------------------------------------------------------------------
>
> Key: SPARK-44480
> URL: https://issues.apache.org/jira/browse/SPARK-44480
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 3.5.0
> Reporter: Eric Marnadi
> Assignee: Eric Marnadi
> Priority: Major
>
> Maintenance tasks on StateStore was being done by a single background thread, which is prone to straggling. In this change, the single background thread would instead schedule maintenance tasks to a thread pool.
> Introduce {{spark.sql.streaming.stateStore.enableStateStoreMaintenanceThreadPool}} config so that the user can enable a thread pool for maintenance manually.
> Introduce {{spark.sql.streaming.stateStore.numStateStoreMaintenanceThreads}} config so the thread pool size is configurable.
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