[jira] [Updated] (SPARK-49580) Basic admission control over the number of concurrent executions

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-49580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated SPARK-49580:
-----------------------------------
    Labels: pull-request-available  (was: )

> Basic admission control over the number of concurrent executions
> ----------------------------------------------------------------
>
>                 Key: SPARK-49580
>                 URL: https://issues.apache.org/jira/browse/SPARK-49580
>             Project: Spark
>          Issue Type: Improvement
>          Components: Connect
>    Affects Versions: 4.0.0
>            Reporter: Changgyoo Park
>            Priority: Major
>              Labels: pull-request-available
>
> Related to https://issues.apache.org/jira/browse/SPARK-49544
> Need to limit the number of ExecuteHolders associated to a single session.
> -> If the limit is reached, the client should retry (add a new error class + modify RetryPolicy.scala).
> *I'd like to emphasise that this can be a (D)DoS attack vector! A single session can spawn unlimited number of threads!*.
> + (Maybe) The number of total sessions should also be limited.



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