[jira] [Commented] (CASSANDRA-10395) Monitor UDFs using a single thread

["Robert Stupp (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-10395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14935430#comment-14935430 ] 

Robert Stupp commented on CASSANDRA-10395:
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Started working on this.
The benefit of this change is that we save UDF call latency caused by scheduling the UDF call.
The downside is that an endless-loop-UDF will really never return and thus not emit a warning to the client. CASSANDRA-9954 would bring back the warning for Java-UDFs.
/cc [~aweisberg] [~tjake]

> Monitor UDFs using a single thread
> ----------------------------------
>
>                 Key: CASSANDRA-10395
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10395
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Robert Stupp
>            Assignee: Robert Stupp
>            Priority: Minor
>             Fix For: 3.0.x
>
>
> Actually each UDF execution is handed over to a separate thread pool to be able to detect UDF timeouts. We could actually leave UDF execution in the "original" thread but have another thread/scheduled job regularly looking for UDF timeouts, which would save some time executing the UDF.



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