CODEWITHSUNDEEP
asynchronousconcurrencyapache-zookeeper
jdk2588
jdk2588

Reputation: 792

Using asynchronous API to create nodes in Zookeeper

While looking for zookeeper, the accepted answer says that concurrent writes are not allowed.
Explaining Apache ZooKeeper

Now my question is as Zookeeper has linear writes, that does not stop me to use Asynchronous APIs to create nodes and take the response in a callback ? Though internally it may not allow concurrent writes , or am I missing something ?

Upvotes: 1

Views: 369

Answers (1)

Imesha Sudasingha
Imesha Sudasingha

Reputation: 3570

Even though zookeeper operates in an ensemble, writes are always served through the leader. Therefore, leader is capable of queuing write requests and completing them sequentially.

Using the asynchronous API will not do any harm to the above mentioned approach. Even though the write requests are asynchronous (from the client side), leader will always make sure that they are served sequentially. Once a asynchronous write request is served, client will be notified through the callback. It is simple as that. Remember, the requests are asynchronous as viewed by the client. But from the leader's point of view, they are served sequentially.

Upvotes: 1

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