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Posted to issues@drill.apache.org by "Paul Rogers (JIRA)" <ji...@apache.org> on 2016/12/15 22:57:58 UTC
[jira] [Updated] (DRILL-5060) External Sort does not recognize
query cancellation during long events
[ https://issues.apache.org/jira/browse/DRILL-5060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Paul Rogers updated DRILL-5060:
-------------------------------
Assignee: (was: Paul Rogers)
> External Sort does not recognize query cancellation during long events
> ----------------------------------------------------------------------
>
> Key: DRILL-5060
> URL: https://issues.apache.org/jira/browse/DRILL-5060
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.8.0
> Reporter: Paul Rogers
> Priority: Minor
>
> The external sort operator performs in-memory or on-disk sorting. Several functions within external sort can take an extended time. During this time, the operator does not check if a query cancellation has occurred. These long events are:
> * Spilling a group of batches to disk
> * In-memory sort
> Note that "re-spilling" of spill files is covered by the first item above: re-spill uses the same code to write the new file as is used for the original "first generation" spill files.
> Also, the final merge is handled because the downstream operator will check for cancellation prior to fetching each batch from the sort operator.
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