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[ZOOKEEPER-1657] Increased CPU usage by unnecessary SASL checks - Zookeeper - [issue]
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...I did some profiling in one of our Java environments and found an interesting footprint in ZooKeeper. The SASL support seems to trigger a lot times on the client although it's not even in us...
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http://issues.apache.org/jira/browse/ZOOKEEPER-1657
Author: Gunnar Wagenknecht,
2013-05-11, 00:05
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CPU Increase in 3.4.5 Java Client caused by SASL - Zookeeper - [mail # user]
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...Hi, We noticed a significant CPU usage increase when deploying ZooKeeper 3.4.5 Java client. I've opened ticket ZOOKEEPER-1657 [1] with some results from a profiling session...
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Author: Gunnar Wagenknecht,
2013-03-01, 17:07
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[ZOOKEEPER-1297] Add stat information to create() call - Zookeeper - [issue]
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...In order to get a Stat object after creation one has to do another exists() call. This leaves client code vulnerable to a possible update window by another writer. All synchronous methods bu...
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http://issues.apache.org/jira/browse/ZOOKEEPER-1297
Author: Gunnar Wagenknecht,
2012-12-20, 11:03
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Network issues? - Zookeeper - [mail # user]
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...Hi, I have noticed the following pattern in our cluster today: The leader reports: > Unexpected exception causing shutdown while sock still open > java.io.EOFEx...
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Author: Gunnar Wagenknecht,
2012-12-06, 16:39
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Re: Fatal Severe unrecoverable error and shutdown of OSGI framework - Zookeeper - [mail # user]
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...Am 24.10.2012 16:02, schrieb Peter Wissel: Without further information on the changes you were working on and how ZK is used ... this is just guessing ... but do you have all the neces...
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Author: Gunnar Wagenknecht,
2012-10-24, 14:16
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ZooKeeper Cluster Crash resulted in not loadable database - Zookeeper - [mail # user]
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...Hi, I'm investigating a crash of a ZooKeeper 3.3.4 cluster. It seems that the cause of the crash was an issue in the networking layer. All the ZK server suddenly lost connections to cl...
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Author: Gunnar Wagenknecht,
2012-09-05, 07:43
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[ZOOKEEPER-1100] Killed (or missing) SendThread will cause hanging threads - Zookeeper - [issue]
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...After investigating an issues with hanging threads I noticed that any java.lang.Error might silently kill the SendThread. Without a SendThread any thread that wants to send something will ha...
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http://issues.apache.org/jira/browse/ZOOKEEPER-1100
Author: Gunnar Wagenknecht,
2012-03-21, 04:04
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Running an ensemble in one JVM - Zookeeper - [mail # user]
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...Hi, Is it possible to run an ensemble in one JVM? I'd like to write some unit tests for our application in order to test the robustness of my application regarding connection los...
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Author: Gunnar Wagenknecht,
2011-10-19, 06:42
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Re: ZooKeeper Clients waiting forever (hanging threads) - Zookeeper - [mail # user]
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...Am 21.06.2011 09:32, schrieb Gunnar Wagenknecht: A look at ClientCnxn.java confirms this. I don't know if this is expected/intended behavior. Thus, I opened https://issues.apache.org/j...
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Author: Gunnar Wagenknecht,
2011-06-21, 09:27
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Re: ZooKeeper Clients waiting forever (hanging threads) - Zookeeper - [mail # user]
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...Am 21.06.2011 09:14, schrieb Gunnar Wagenknecht: Oddly enough, the OOM might have killed the SendThread, i.e. in the JVM thread dump there is no SendThread any more. Just the EventThre...
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Author: Gunnar Wagenknecht,
2011-06-21, 07:32
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