public interface CollectionStateWatcher
ZkStateReader.registerCollectionStateWatcher(String, CollectionStateWatcher)and called whenever there is a change in the collection state or in the list of liveNodes.
|Modifier and Type||Method and Description|
Called when either the collection we are registered against has a change of state or there is a change to the live nodes of our collection.
boolean onStateChanged(Set<String> liveNodes, DocCollection collectionState)
Note that, due to the way Zookeeper watchers are implemented, a single call may be the result of several state changes. Also, multiple calls to this method can be made with the same state, ie. without any new updates.
liveNodes- the set of live nodes
collectionState- the new collection state (may be null if the collection has been deleted)
Copyright © 2000-2021 Apache Software Foundation. All Rights Reserved.