shameersss1 opened a new pull request, #3516:
URL: https://github.com/apache/hive/pull/3516
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### What changes were proposed in this pull request?
Change ThreadLocal Variable to Inheritable ThreadLocal variable
### Why are the changes needed?
Currently SessionState.get() returns null if it is called inside a
ThreadPool. If there is any custom third party component leverages
SessionState.get() for some operations like getting the session state or
session config inside a thread pool it will result in null since session state
is thread local
(https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/session/SessionState.java#L622)
and ThreadLocal variable are not inheritable to child threads / thread pools.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Unit Test was added to test the feature
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