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Posted to issues@drill.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/04/30 23:35:00 UTC

[jira] [Commented] (DRILL-7223) Make the timeout in TimedCallable a configurable boot time parameter

    [ https://issues.apache.org/jira/browse/DRILL-7223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16830757#comment-16830757 ] 

ASF GitHub Bot commented on DRILL-7223:
---------------------------------------

Ben-Zvi commented on pull request #1776: DRILL-7223: Create an option to control timeout for REFRESH METADATA
URL: https://github.com/apache/drill/pull/1776
 
 
   The new option is passed to the TimedCallable code via the existing ParquetReaderConfig parameter, by adding a Long field there - timeoutPerRunnableInMsec .
   
   The timeout (TIMEOUT_PER_RUNNABLE_IN_MSECS) is used there for two purposes:
   (1) Issue a warning when exceeded.
   (2) Time-out (i.e. throw TimeoutException ?) the running thread.
   Seems that the second one does not work; maybe the last change (DRILL-6281) is the reason.
   
 
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> Make the timeout in TimedCallable a configurable boot time parameter
> --------------------------------------------------------------------
>
>                 Key: DRILL-7223
>                 URL: https://issues.apache.org/jira/browse/DRILL-7223
>             Project: Apache Drill
>          Issue Type: Improvement
>    Affects Versions: 1.16.0
>            Reporter: Aman Sinha
>            Assignee: Boaz Ben-Zvi
>            Priority: Minor
>             Fix For: 1.17.0
>
>
> The [TimedCallable.TIMEOUT_PER_RUNNABLE_IN_MSECS|https://github.com/apache/drill/blob/master/exec/java-exec/src/main/java/org/apache/drill/exec/store/TimedCallable.java#L52] is currently an internal Drill constant defined as 15 secs. This has been there from day 1 of the introduction. Drill's TimedCallable implements the Java concurrency's Callable interface to create timed threads. It is used by the REFRESH METADATA command which creates multiple threads on the Foreman node to gather Parquet metadata to build the metadata cache.
> Depending on the load on the system or for very large scale number of parquet files (millions) it is possible to exceed this timeout.  While the exact root cause of exceeding the timeout is being investigated, it makes sense to make this timeout a configurable parameter to aid with large scale testing. This JIRA is to make this a configurable bootstrapping option in the drill-override.



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