Zhihua Deng created HIVE-27201:
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Summary: Inconsistency between session Hive and thread-local Hive
may cause HS2 deadlock
Key: HIVE-27201
URL: https://issues.apache.org/jira/browse/HIVE-27201
Project: Hive
Issue Type: Bug
Components: HiveServer2
Reporter: Zhihua Deng
Assignee: Zhihua Deng
The HiveServer2’s server handler can switch to process the operation from other
session, in such case, the Hive cached in ThreadLocal is not the same as the
Hive in SessionState, and can be referenced by another session.
If the two handlers swap their sessions to process the DatabaseMetaData
request, and the HiveMetastoreClientFactory obtains the Hive via Hive.get(),
then there is a chance that the deadlock can happen.
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