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cluster confused...would not delete node until cluster restarted... - Zookeeper - [mail # user]
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...My 3 node cluster would not let me delete a node saying it was not empty...but stat showed that it was in fact empty: [zk: localhost:2181(CONNECTED) 1] delete /ROOT_A/INSTANCES/ 10.244...
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Author: Brian Tarbox,
2013-05-23, 13:21
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Is there a way to get the first 'n' children of a node? - Zookeeper - [mail # user]
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...We are building up some quite large (100,000) lists of items under a node. Each item is small but there are a lot of them. I need to process these items but certainly don't need ...
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Author: Brian Tarbox,
2013-04-10, 14:15
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Re: how do you examine the transaction log? - Zookeeper - [mail # user]
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...Thank you so much! :-) On Mon, Mar 25, 2013 at 3:59 PM, Camille Fournier wrote: http://about.me/BrianTarbox...
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Author: Brian Tarbox,
2013-03-25, 20:28
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how do you examine the transaction log? - Zookeeper - [mail # user]
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...I'm running on Amazon's EC2 and "sometimes" find myself with ephemeral nodes after all of my workers have exited or been terminated. I've seen other reports of this problem that turned...
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Author: Brian Tarbox,
2013-03-25, 19:53
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trying to understand the keep alive code - Zookeeper - [mail # user]
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...I've been trying to debug a problem related to getting session timeouts when running an app that does tons of non-zookeeper related I/O. That I/O pressure has led to lots of zookeeper ...
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Author: Brian Tarbox,
2013-02-27, 19:03
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Re: excessive client timeouts tied to NIO select(timeout) - Zookeeper - [mail # user]
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...Thanks . We're running on Amazon EC2 so the network is unpredictable. Our app is doing a ton of other I/O via Amazon S3 as well as to Cassandra. Even given that, asking for...
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Author: Brian Tarbox,
2013-02-26, 18:53
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excessive client timeouts tied to NIO select(timeout) - Zookeeper - [mail # user]
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...The main client loop involves sending keep-alive pings in-between calls to the NIO selector.select call which looks for data from the server (including ping responses). What I've found...
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Author: Brian Tarbox,
2013-02-26, 17:15
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Re: Server seems not to be sending keep-alives so I lose my session ("have not heard from server....") - Zookeeper - [mail # user]
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...The server logs don't say anything. I do have a theory based on reading the code, specifically the SendThread class within ClientCnxn.java It took me a while to figure that its t...
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Author: Brian Tarbox,
2013-02-25, 18:05
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Server seems not to be sending keep-alives so I lose my session ("have not heard from server....") - Zookeeper - [mail # user]
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...I am getting the dreaded message: 10:59:45,871 INFO [org.apache.zookeeper.ClientCnxn] - and from looking at the logs it certainly seems that the keep alive messages are sometim...
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Author: Brian Tarbox,
2013-02-25, 16:51
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Re: why does ZK ignore null pointer errors? - Zookeeper - [mail # user]
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...Your guess is correct about failing while accepting. We seem to periodically find ourselves in a case where we disconnect (perhaps from timing out the connection) and then somehow in t...
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Author: Brian Tarbox,
2012-12-19, 12:38
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