mail archive zookeeper-user.hadoop.apache.org
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zookeeper-user.hadoop.apache.org
January 2009
mutexes (1 Reply)
Kevin Burton — 123106474104 Jan 2009*
I assume the recipe for creating a mutex in ZK would be: create a nonce create an ephemeral lock on a named node. if you succeed on the create you one...
State of the command line? (1 Reply)
Kevin Burton — 123116790105 Jan 2009*
What's the state of the command line client (ZooKeeperMain) ... it seems a bit fragile. Some thoughts.... you should probably ship it with a wrap...
myid.... (5 Replies)
Kevin Burton — 123117951205 Jan 2009*
This wasn't clear in the documentation..... but the admin needs to create the myid file, correct? Couldn't this happen on init if we use IP ...
Persistent watches........ (1 Reply)
Kevin Burton — 123118455705 Jan 2009*
> Because watches are one time triggers and there is latency between getting the > event and sending a new request to get a watch you cannot rel...
NoSyncConnected? (1 Reply)
Kevin Burton — 123118810705 Jan 2009*
What's the difference between SyncConnected and NoSyncConnected? I'm trying to handle zookeeper restart/failure and need to know the best wa...
Kevin Burton — 123119552905 Jan 2009*
It looks like events from Zookeeper are dispatches from its event thread: java.lang.Exception at foo.zookeeper.WatcherImpl.process(NodeWatcher.java:54...
Kevin Burton — 123119627105 Jan 2009*
Shutting down my zookeeper server yields this on my client. Continual disconnect events. Shouldn't only one be issued? The second one is not a st...
group messaging, empheral nodes on zookeeper (8 Replies)
Nuthan Ashkore — 123126981306 Jan 2009*
I've 2 separate questions regarding zookeeper: 1. Group Messaging: Is it possible to do group messaging with zookeeper 3.0.1 ? If not, are there ...
event re-issue on reconnect? (2 Replies)
Kevin Burton — 123130404507 Jan 2009*
I have an event watching a file... and if I restart the server I get this: onConnect onData path: /foo, version: 4, data: '2333' onDisconnec...
Kevin Burton — 123137162207 Jan 2009*
>From what I can tell, a session will only expire if it can't communicate with the ensemble due to the entire servers failing or the network s...
ouch, zookeeper infinite loop (6 Replies)
Kevin Burton — 123137373608 Jan 2009*
Creating this node with this ACL: Created /foo setAcl /foo world:anyone:w Causes the exception included below. It's an infinite loop so it...
Kevin Burton — 123144213308 Jan 2009*
Can this be thrown when using multiple servers as long as > 1 of them is online? Trying to figure out of I should try some type of reconnect if a s...
Ajay Anand — 123144544408 Jan 2009
The next Bay Area Hadoop User Group meeting is scheduled for Wednesday, January 21st at Yahoo! 2821 Mission College Blvd, Santa Clara, Building 1, Tra...
George Porter — 123144588208 Jan 2009
Live in San Diego/Southern California and want to get together and talk Hadoop/HBase/Mahout/Zookeeper/Thrift/Cloud/Pig/HBase/etc? If so, please join u...
Sending data during NodeDataChanged or NodeCreated (10 Replies)
Kevin Burton — 123145971909 Jan 2009*
So if I understand this correctly, if I receive a NodeDataChanged event, and then attempt do do a read of that node, there's a race condition whe...
Simpler ZooKeeper event interface.... (29 Replies)
Kevin Burton — 123151768809 Jan 2009*
Hey guys. I think I'm finally in the position to push ZK into production for a while to test it out. My biggest feedback (other than the small bu...
InterruptedException (6 Replies)
Kevin Burton — 123152566109 Jan 2009*
Why does ZK throw InterruptedException? Shouldn't this be a KeeperException instead of a java system exception when interrupt() is called? The ja...
A modest proposal for simplifying zookeeper :) (2 Replies)
Kevin Burton — 123153143009 Jan 2009*
OK.... so it sounds from the group that there are still reasons to provide rope in ZK to enable algorithms like leader election. Couldn't ZK ship...
Updated NodeWatcher... (8 Replies)
Kevin Burton — 123154097409 Jan 2009*
I've updated based on the last round of feedback regarding ZK operation: http://pastebin.com/f66898b7 This is what I think the API should look li...
Distributed queue: how to ensure no lost items? (9 Replies)
Stuart White — 123187267413 Jan 2009*
I'm interested in using ZooKeeper to provide a distributed producer/consumer queue for my distributed application. Of course I've been study...
Delaying 3.2 release by 2 to 3 weeks? (1 Reply)
Mahadev Konar — 123206603916 Jan 2009*
Hi all, I needed to get quotas in zookeeper 3.2.0 and wanted to see if delaying the release by 2-3 weeks is ok with everyone? Here is the jira for it ...
SyncRequestProcessor Possible Bug (1 Reply)
Andrew Carman — 123253055821 Jan 2009*
We were looking through the ZK server code and came across a possible bug that occurs when shutting down the SyncRequestProcessor (it may also apply t...
Standard redistributable set of primitives? (5 Replies)
Tom Nichols — 123316683128 Jan 2009*
Hi, I was wondering if there were plans to create a set of standard ZooKeeper primitives, sort of like commons-collections. I figure it would be mostl...