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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