[
https://issues.apache.org/jira/browse/SPARK-35861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
L. C. Hsieh reassigned SPARK-35861:
-----------------------------------
Assignee: Jungtaek Lim
> Introduce "prefix match scan" feature on state store
> ----------------------------------------------------
>
> Key: SPARK-35861
> URL: https://issues.apache.org/jira/browse/SPARK-35861
> Project: Spark
> Issue Type: Sub-task
> Components: Structured Streaming
> Affects Versions: 3.2.0
> Reporter: Jungtaek Lim
> Assignee: Jungtaek Lim
> Priority: Major
>
> We are proposing the new functionality in Structured Streaming’s state store,
> “prefix match scan”, to group the keys into logical groups, and scan the keys
> in the same group efficiently.
> This change is to enable us to construct the “logically list-like” data
> structure on top of the current state store, which only provides the
> operations for key-value. There’s an iterator in the state store to scan
> through the key space, but only supports full scan. Prefix match scan would
> open the possibility to scan on a specific range of the keys efficiently.
> This helps to simplify the state and also logic to the streaming session
> window, and also achieve similar performance (or even higher) than the
> approach we proposed before.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
