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Posted to dev@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2018/08/20 22:25:00 UTC
[jira] [Created] (FLINK-10185) Make
ZooKeeperStateHandleStore#releaseAndTryRemove synchronous
Till Rohrmann created FLINK-10185:
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Summary: Make ZooKeeperStateHandleStore#releaseAndTryRemove synchronous
Key: FLINK-10185
URL: https://issues.apache.org/jira/browse/FLINK-10185
Project: Flink
Issue Type: Improvement
Components: Distributed Coordination
Affects Versions: 1.6.0, 1.5.2, 1.4.2, 1.7.0
Reporter: Till Rohrmann
Assignee: Till Rohrmann
Fix For: 1.4.3, 1.6.1, 1.7.0, 1.5.4
The {{ZooKeeperStateHandleStore#releaseAndTryRemove}} method executes parts of its logic synchronously (retrieving the state handle and unlocking the ZNode) and others asynchronously (removing the ZNode). Moreover, the method takes a parameter which is used to execute some logic in case of a successful removal. This was done in order to execute a potentially blocking state discard operation in a different thread.
I think this can be simplified by executing all logic in the same thread and running the callback after having called {{ZooKeeperStateHandleStore#releaseAndTryRemove}}. Moreover, if this operation needs to be not blocking one could use a different thread to call into this method.
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