All Questions
Tagged with apache-zookeeper apache-curator
219
questions
-1
votes
0
answers
24
views
Is there a compatibility matrix between apache curator and apache zookeeper?
I have a zookeeper running which is versioned 3.9.2,
but unfortunately, apache curator dependencies for the clients haven't been upgraded.
I would like to know what is the compatible version of apache ...
- 5,781
0
votes
0
answers
47
views
How to specify default Leader for Apache Curator
I am trying to create client for Apache Zookeeper server with Apache Curator.
Idea:
To create client for some worker or job that will be running with some interval. For now I have 3 clients with this ...
0
votes
0
answers
68
views
Performance issue with ZooKeeper ID level locking - Need optimization guidance
We are currently implementing domain ID level locking using Apache ZooKeeper to prevent concurrent modifications of domain objects by multiple actors. The locking mechanism is applied to objects based ...
- 71
2
votes
0
answers
453
views
Zookeeper : java.lang.ClassNotFoundException: org.apache.zookeeper.admin.ZooKeeperAdmin after updating spring boot
I am trying to update an springboot application which uses org.apache.zookeeper.zookeeper.
After updating the spring boot version. I am getting one of the two errors given below depending upon the ...
- 38
1
vote
0
answers
118
views
How Curator (the Zookeeper client framework) handles network partition?
How does Curator handles network partition with Zookeeper server?
Especially in the context of watchers, I imagine it will miss events if something changes during the network partition, is this ...
- 11
1
vote
0
answers
734
views
Curator disconnects from zookeeper when IPs change even when using DNS names in connection string
We are using the curator service discovery in docker and kubernetes environments. We setup the connection string using the DNS names of the containers/pods. The problem I am seeing is that it ...
- 11
0
votes
0
answers
481
views
Zookeeper (Curator framework) : explicitly giving up the leaderLatch
Background
I have a web-socket consumer running on 1 of my backend servers. To keep this system HA, i want to keep 2 more standby machines in the setup. Expectation is -> 1 of the standby VM ...
- 1,214
6
votes
2
answers
2k
views
CuratorFrameworkImpl - Background exception was not retry-able or retry gave up
Curator framework version - 4.3.0, Zookeeper version - 5.5.0
We have deployed apache atlas on Kubernetes and it uses Zookeeper to elect one out of two atlas pods as a leader.
We are running three ...
- 71
0
votes
1
answer
951
views
what happens when a node elected as leader goes down?
My question is related to Leader Latch recipe.
I want to use Leader latch to implement a mutex for a scheduled job. There's another requirement: if the scheduled job starts at 1:00:00.005 PM and ends ...
- 5,123
4
votes
1
answer
2k
views
Why isn't curator recovering when zookeeper is back online?
I have a CuratorFramework client (v5.1.0) running against a Zookeeper server (v3.7.0). If the
Zookeeper server is shutdown while the client is connected to it I can see connection states
(with a ...
- 13.8k
0
votes
0
answers
48
views
How to build a scene where zookeeper jitter cause to multiple rapid elections
I have two program, fc(failoverController) and web(webServer). And I use zookeeper to ensure high reliability.
fc will deploy on two server, two fc use apache-curator LeaderSelector to elect master, ...
- 311
1
vote
1
answer
1k
views
Create a ttl node in zookeeper using curator
How to create a ttl node using apache curator? I have tried the following
ExponentialBackoffRetry retryPolicy = new ExponentialBackoffRetry(1000, 3);
String connectionString = "127.0.0.1:...
- 17.1k
1
vote
1
answer
1k
views
Apache Curator + Spring Boot: Simple Observer pattern example
I am trying to start a basic project structure where multiple spring boot application will share resources using apache curator.
I am following the guides specified in documentation but changing the ...
- 395
0
votes
1
answer
399
views
How to start zookeeper ensemble using Curator TestingServer
I am just trying to start a zookeeper ensemble (Leader - follower) with java implementation using the Curator frame work or zookeeper.
Initially i have checked with binary mode and it was working fine ...
- 1,621
0
votes
1
answer
1k
views
Java Curator/ZooKeeper client hanging indefinitely when ZooKeeper is not available on some executions
While testing Curator service discovery start multiple times, on some executions where ZooKeeper server is not available while
starting, it got waiting and hanging indefinitely, with thread dump stack ...
- 214