Istvan Toth created ZOOKEEPER-4804:
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Summary: Use daemon threads for Netty client
Key: ZOOKEEPER-4804
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4804
Project: ZooKeeper
Issue Type: Bug
Affects Versions: 3.8.3
Reporter: Istvan Toth
When the Netty client is used, the Java process hangs on System.exit if there
is an open Zookeeper connection.
This is caused by the non-daemon threads created by Netty.
Exiting without closing the connection is not a good practice, but this hang
does not happen with the NIO client, and I think ZK should behave the same
regardless of the client implementation used.
The Netty ThreadFactory implementation is configurable, it shouldn't be too
hard make sure that daemon threads are created.
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