apache-zookeeper Questions
3
I'm planning to use Spring Boot for my assignment. Its a typical server application with connection to database. I know I can use Spring Configuration to externalize my properties e.g. db connectio...
Physicochemical asked 27/2, 2015 at 1:28
2
How to mute DEBUG messages on AWS Elastic MapReduce Master node?
hbase(main):003:0> list
TABLE
mydb
1 row(s) in 0.0510 seconds
hbase(main):004:0> 00:25:17.104 [main-SendThread(ip-172-31-1...
Quintuplet asked 23/10, 2014 at 0:28
3
Solved
I see a common pattern for services that we try to develop and I wonder if there are tools / libraries out there that would help here. While the default jobs as discussed in microservice literature...
Impecunious asked 10/7, 2015 at 13:54
1
I'm trying to create a Load Balancer to be in front of a Zookeeper 3.4.6 cluster. When I do that the cluster works well but an exception is thrown:
WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:218...
Heartless asked 18/6, 2015 at 1:16
1
Solved
I am trying to understand exactly what types of problems Apache ZooKeeper ("ZK") solves, and perhaps their Recipes page is the best place to start.
First off, I am making the following assumptions...
Belldas asked 16/6, 2015 at 14:58
0
I have HBase running on EMR cluster and I'm trying to access the tables on it with Spark from local machine.
It seems that it connects to Zookeeper but can't find the table I'm looking for.
Here is...
Comfrey asked 10/6, 2015 at 10:29
11
ZooKeeper is a highly available coordination service for data centers. It originated in the Hadoop project. One can implement locking, fail over, leader election, group membership and other c...
Lemming asked 18/5, 2011 at 16:26
2
I am working on a project in which I need to maintain a watches on a node, and that nodes children as well. I have tried using PathCache but I am not sure how to watch for childrens children here?
...
Killing asked 10/2, 2014 at 1:59
0
I'd like to programatically setup zookeeper cluster. My goal is to use machines with CoreOS and dynamically deploy three nodes in form of docker containers and setup them to one zoo cluster.
Except...
Massingill asked 22/5, 2015 at 12:4
1
I am now using a CDH-5.3.1 cluster with three zookeeper instances located in three ips:
133.0.127.40 n1
133.0.127.42 n2
133.0.127.44 n3
Everything works fine when it starts, but these days I not...
Logogram asked 18/5, 2015 at 16:45
3
I am planning to write an application which will have distributed Worker processes. One of them will be Leader which will assign tasks to other processes. Designing the Leader elelection process is...
Baez asked 7/3, 2011 at 9:13
2
Solved
I'm actually studying microservices and I'm facing a problem.
Context
I m developing two microservices :
User management, Spring Based, with MySQL database
Planning management, ASP.NET based wi...
Goles asked 14/4, 2015 at 19:45
0
We are currently evaluating apache-curator for distributed locking use case. Below is our test case:
public class Test {
private static CuratorFramework client = CuratorFrameworkFactory.newClien...
Spevek asked 24/4, 2015 at 16:7
0
Does anybody know which of the Curator lock recipes creates ephemeral nodes ?
I tested InterProcessMutex lock but as far as I can see (with the zkClient) it does not delete the nodes after release...
Shaped asked 6/4, 2015 at 15:18
1
Solved
I have installed Zookeeper using sudo apt-get install zookeeper on an Ubuntu server 14.04. I am having trouble understanding how to configure Zookeeper to start automatically, on boot. Also, I can ...
Kermie asked 12/3, 2015 at 17:56
2
Solved
I'm new to ZooKeeper. This is what I need.
I've a network of peers.
At t=t_1 -> [peer-1 (Leader), peer-2]
peer-1 is the master and all clients connect to this node.
At t=t_2 -> [peer-1 (...
Unify asked 7/7, 2012 at 12:47
0
We are facing one peculiar issue with Zoo Keeper wherein the ZK loses connectivity with solr cloud all of a sudden and starts throwing an Exception which says "Cannot talk to ZooKeeper - Updates ar...
Pembrook asked 27/2, 2015 at 4:9
1
Solved
I'm unable to create zookeeper.log under the directory i had specified in the log4j.properties. I'm not sure what's going wrong, Can someone please direct me what should I be looking into to solve ...
Catechol asked 24/2, 2015 at 8:44
1
Solved
Sorry this is a pretty lame question. I googled and searched on the ZK websites for a long time before I finally opted to ask here though!
When I start ZooKeeper's zkCli.sh and type help, for the ...
Turgot asked 18/2, 2015 at 17:16
2
Solved
I am using zookeeper ensemble for hbase. Zookeeper is running on 3 machines. While HBase is also in fully distributed mode. I have Nutch 2.x version. When I start nutch to crawl some data, it gives...
Inexperience asked 23/1, 2015 at 12:13
1
Looks like zookeeper CLI (zkCli.sh) does not support wildcard - I have not looked at the zookeeper code to figure out whether it is not possible design wise or whether I am missing something silly ...
Hosanna asked 31/7, 2014 at 6:35
1
How to programmatically detect which server in a ZooKeeper ensemble a client is connected to?
I'm using the Apache Curator API and I am listening for state changes in connection by registering Con...
Shalna asked 16/12, 2014 at 23:22
1
Solved
I read how current master election algorithms like Raft, Paxos or Zab elect master on a cluster and couldn't understand why they use sophisticated algorithms instead of simple bully algorithm.
I'm...
Destructive asked 19/12, 2014 at 1:55
1
Solved
I am trying to read older messages from Kafka with spark streaming. However, I am only able to retrieve messages as they are sent in real time (i.e., if I populate new messages, while my spark prog...
Marozas asked 5/12, 2014 at 19:58
1
Solved
Can Apache Mesos 'master' nodes be co-located on the same machine as Mesos 'slave' nodes? Similarly (for high-availability (HA) deploys), can the Apache Zookeeper nodes used in Mesos 'master' elect...
Liquidation asked 27/10, 2014 at 21:54
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