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https://issues.apache.org/jira/browse/HIVE-12431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15038432#comment-15038432
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Sergey Shelukhin commented on HIVE-12431:
-----------------------------------------

{noformat}
+        Thread.currentThread().interrupt();
+        if (LOG.isDebugEnabled()) {
+          LOG.debug("Interrupted Exception ignored", e);
+        }
+      }
{noformat}
This path will return the lock without having acquired it

> Support timeout for global compile lock
> ---------------------------------------
>
>                 Key: HIVE-12431
>                 URL: https://issues.apache.org/jira/browse/HIVE-12431
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2, Query Processor
>    Affects Versions: 1.2.1
>            Reporter: Lenni Kuff
>            Assignee: Mohit Sabharwal
>         Attachments: HIVE-12431.patch
>
>
> To help with HiveServer2 scalability, it would be useful to allow users to 
> configure a timeout value for queries waiting to be compiled. If the timeout 
> value is reached then the query would abort. One option to achieve this would 
> be to update the compile lock to use a try-lock with the timeout value.



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