[jira] [Created] (SPARK-30556) SubqueryExec passes local properties to SubqueryExec.executionContext

["Ajith S (Jira)" <ji...@apache.org>]

Ajith S created SPARK-30556:
-------------------------------

             Summary: SubqueryExec passes local properties to SubqueryExec.executionContext
                 Key: SPARK-30556
                 URL: https://issues.apache.org/jira/browse/SPARK-30556
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.4.4, 3.0.0
            Reporter: Ajith S


Local properties set via sparkContext are not available as TaskContext properties when executing  jobs and threadpools have idle threads which are reused

Explanation:
When SubqueryExec, the {{relationFuture}} is evaluated via a separate thread. The threads inherit the {{localProperties}} from sparkContext as they are the child threads.
These threads are controlled via the executionContext (thread pools). Each Thread pool has a default {{keepAliveSeconds}} of 60 seconds for idle threads.
Scenarios where the thread pool has threads which are idle and reused for a subsequent new query, the thread local properties will not be inherited from spark context (thread properties are inherited only on thread creation) hence end up having old or no properties set. This will cause taskset properties to be missing when properties are transferred by child thread via {{sparkContext.runJob/submitJob}}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org