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https://issues.apache.org/jira/browse/SPARK-51097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jungtaek Lim reassigned SPARK-51097:
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Assignee: Zeyu Chen
> Adding state store level metrics for last uploaded snapshot version in RocksDB
> ------------------------------------------------------------------------------
>
> Key: SPARK-51097
> URL: https://issues.apache.org/jira/browse/SPARK-51097
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 4.0.0, 4.1.0
> Reporter: Zeyu Chen
> Assignee: Zeyu Chen
> Priority: Minor
> Labels: pull-request-available
>
> We currently lack detailed visibility into state store level state
> maintenance in RocksDB. This limitation affects the ability to identify
> performance degradation issues behind maintenance tasks.
> To remediate this, we will introduce state store "instance" metrics to
> StreamingQueryProgress to track the latest snapshot version uploaded in
> RocksDB.
> This improvement addresses three challenges in observability:
> * Uneven partition starvation, where we need to identify partitions with
> slow state maintenance,
> * Finding missing snapshots across versions, so we minimize extensive
> replays during recovery,
> * Identify performance instability, such as gaining insights into snapshot
> upload patterns
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