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Jacky007 commented on ZOOKEEPER-107: ------------------------------------ The result is same in my environment。As I see, In testRemoveAddOne method {noformat} String configStr = reconfig(zk1, null, leavingServers, null, -1); testServerHasConfig(zk2, null, leavingServers); testNormalOperation(zk2, zk1); {noformat} When i = 1 in the for loop, it is probability that testServerHasConfig hang at zk.getConfig(false, new Stat()). It is very strange to understand. > Allow dynamic changes to server cluster membership > -------------------------------------------------- > > Key: ZOOKEEPER-107 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-107 > Project: ZooKeeper > Issue Type: Improvement > Components: server > Reporter: Patrick Hunt > Assignee: Alexander Shraer > Fix For: 3.5.0 > > Attachments: SimpleAddition.rtf, zkreconfig-usenixatc-final.pdf, > ZOOKEEPER-107-1-Mar.patch, ZOOKEEPER-107-20-July.patch, > ZOOKEEPER-107-21-July.patch, ZOOKEEPER-107-22-Apr.patch, > ZOOKEEPER-107-23-SEP.patch, ZOOKEEPER-107-28-Feb.patch, > ZOOKEEPER-107-28-Feb.patch, ZOOKEEPER-107-29-Feb.patch, > ZOOKEEPER-107-3-Oct.patch, ZOOKEEPER-107-Aug-20.patch, > ZOOKEEPER-107-Aug-20-ver1.patch, ZOOKEEPER-107-Aug-25.patch, > zookeeper-3.4.0.jar, zookeeper-dev-fatjar.jar, > zookeeper-reconfig-sep11.patch, zookeeper-reconfig-sep12.patch, > zoo_replicated1.cfg, zoo_replicated1.members > > > Currently cluster membership is statically defined, adding/removing hosts > to/from the server cluster dynamically needs to be supported. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira