mail archive zookeeper-user.hadoop.apache.org
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zookeeper-user.hadoop.apache.org
November 2010
Vishal K — 128862009501 Nov 2010*
Hi All, Can you please share your experience regarding ZK snapshot retention and recovery policies? We have an application where we never need to roll...
Setting the heap size (6 Replies)
Tim Robertson — 128863802301 Nov 2010*
Hi all, We are setting up a small Hadoop 13 node cluster running 1 HDFS master, 9 region severs for HBase and 3 map reduce nodes, and are just install...
Ruifang Ge — 128864829601 Nov 2010*
Hi, I started a 5-node zookeeper cluster, then killed the leader (leader1). One of the other server became the new leader(leader2). After that, I rest...
Embedding ZK in another application (16 Replies)
Asankha C. Perera — 128869339202 Nov 2010*
Hi All I'm very new to ZK, and am looking at embeding ZK into an app that needs cluster management - and the objective is to use ZK to notify appl...
amit jaiswal — 128876446703 Nov 2010
Hi, I am trying to understand hedwig. I tried reading the documentation user.txt, dev.txt along with the code but still some design aspects are not cl...
question about watcher (6 Replies)
Qian Ye — 128879841903 Nov 2010*
Hi all: Is there a client API for querying the watchers' owner for a specific znode? In some situation, we want to find out who set watchers on t...
Jeremy Stribling — 128881231503 Nov 2010*
HI everyone, Is there any situation in which creating a new ZK node with the SEQUENCE flag should result in a "node exists" error? I...
András Kövi — 128894811505 Nov 2010*
Hi all, I'm new to Zookeeper and ran into an issue while trying to run the tests with ant. It seems like the log output is buffered until the comp...
Running cluster behind load balancer (9 Replies)
Luka Stojanovic — 128895131705 Nov 2010*
What would be expected behavior if a three node cluster is put behind a load balancer? It would ease deployment because all clients would be configure...
Milind Parikh — 128901292806 Nov 2010
What are the key factors for production readiness of Hedwig? I would really like to use Hedwig in some major projects; but having a production readine...
Patrick Hunt — 128932707409 Nov 2010
I wanted to highlight a couple recent JIRAs that may have impact on users (api consumers AND admins of the service) in the 3.4 timeframe. If you want ...
Verifying Changes (1 Reply)
Ben Hall — 128941580510 Nov 2010*
Hi All... Long time reader... First time writer... Hehe... I am curious to know what successes people have had with verifying zookeeper changes across...
Patrick Hunt — 128958439812 Nov 2010
The Apache ZooKeeper team is proud to announce Apache ZooKeeper version 3.3.2 ZooKeeper is a high-performance coordination service for distributed app...
Persistent watch stream? (2 Replies)
Chang Song — 128963215713 Nov 2010*
Hi. It's been a couple of weeks since we started integrating zookeeper into our app. Great piece of software. Cut down LOC by more than half. Than...
Wacther question (2 Replies)
Neo Anderson — 128963494113 Nov 2010*
My question is - what is the right way to received notification once a znode is created? My scenario is that I have two threads, one (thread A) is goi...
Watcher examples (4 Replies)
Jeremy Hanna — 128988219116 Nov 2010*
Anyone know of a good blog post or docs anywhere that gives a simple example of Watchers in action? I saw the one on: http://hadoop.apache.org/zookeep...
俊贤 — 128995992417 Nov 2010
Hello everyone ,I met a problem recently in my app. First an error “2010-11-17 09:45:00,089 INFO zookeeper.ClientCnxn Client session timed out, have...
number of clients/watchers (7 Replies)
Jeremy Hanna — 129012619119 Nov 2010*
I had a question about number of clients against a zookeeper cluster. I was looking at having between 10,000 and 100,000 (towards 100,000) watchers wi...
Session events (3 Replies)
Gustavo Niemeyer — 129013158219 Nov 2010*
Hello again, Even though we've been using ZooKeeper for some time, just now we're stopping and thinking through to see how to best deal with s...
Steve Gury — 129018670219 Nov 2010*
Hi all, I would like to customize the config of Zookeeper so that when a client is disconnected, the server will instantaneously remove all ephemeral ...
How to reestablish a session (9 Replies)
Gustavo Niemeyer — 129019775119 Nov 2010*
Greetings, As some of you already know, we've been using ZooKeeper at Canonical for a project we've been pushing (Ensemble, http://j.mp/dql6Fu...
Kapil Thangavelu — 129020735819 Nov 2010*
At canonical we've been using zookeeper heavily in the development of a new project (ensemble) as noted by gustavo. I just wanted to give a quick ...
Ted Dunning — 129029216220 Nov 2010
I was just asked a very cogent question of the form "how do you know" and would like somebody who knows better than I do to confirm or deny ...
Patrick Hunt — 129045421922 Nov 2010*
We are now officially an Apache TLP! http://bit.ly/9czN2x As part of the process for moving out from under Hadoop and into full TLP status we need to ...