slim bouguerra created HIVE-18959:
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Summary: Avoid creating extra pool of threads within LLAP
Key: HIVE-18959
URL: https://issues.apache.org/jira/browse/HIVE-18959
Project: Hive
Issue Type: Task
Components: Druid integration
Environment: Kerberos Cluster
Reporter: slim bouguerra
Assignee: slim bouguerra
Fix For: 3.0.0
The current Druid-Kerberos-Http client is using an external single threaded
pool to handle retry auth calls (eg when a cookie expire or other transient
auth issues).
First, this is not buying us anything since all the Druid Task is executed as
one synchronous task.
Second, this can cause a major issue if an exception occurs that leads to
shutting down the LLAP main thread.
Thus to fix this we should avoid using an external thread pool and handle
retrying in a synchronous way.
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