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https://issues.apache.org/jira/browse/ZOOKEEPER-3892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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maoling updated ZOOKEEPER-3892:
-------------------------------
Attachment: zookeeper-3.out
> client cannot connect to server when we do a large scala benchmark test
> -----------------------------------------------------------------------
>
> Key: ZOOKEEPER-3892
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3892
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Reporter: maoling
> Assignee: maoling
> Priority: Major
> Attachments: zookeeper-1.out, zookeeper-2.out, zookeeper-3.out
>
>
> We have three servers(s1[follower], s2[Leader], s3[follower]), after doing a
> large scala benchmark test, the client cannot connect to server anymore.
> No any resource panic(CPU, memory)
>
> {code:java}
> # connect to s2[Leader]
> 2020-07-17 17:44:56,767 [myid:127.0.0.1:2182] - WARN
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@1278] - Session 0x0
> for sever localhost/127.0.0.1:2182, Closing socket connection. Attempting
> reconnect except it is a SessionExpiredException.2020-07-17 17:44:56,767
> [myid:127.0.0.1:2182] - WARN
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@1278] - Session 0x0
> for sever localhost/127.0.0.1:2182, Closing socket connection. Attempting
> reconnect except it is a
> SessionExpiredException.org.apache.zookeeper.ClientCnxn$SessionTimeoutException:
> Client session timed out, have not heard from server in 30000ms for session
> id 0x0 at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1236)2020-07-17
> 17:44:58,519 [myid:127.0.0.1:2182] - INFO
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@1159] - Opening socket
> connection to server localhost/127.0.0.1:2182.2020-07-17 17:44:58,519
> [myid:127.0.0.1:2182] - INFO
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@1161] - SASL config
> status: Will not attempt to authenticate using SASL (unknown error)2020-07-17
> 17:44:58,519 [myid:127.0.0.1:2182] - INFO
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@993] - Socket
> connection established, initiating session, client: /127.0.0.1:64219, server:
> localhost/127.0.0.1:21822020-07-17 17:45:28,522 [myid:127.0.0.1:2182] - WARN
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@1235] - Client session
> timed out, have not heard from server in 30003ms for session id 0x02020-07-17
> 17:45:28,522 [myid:127.0.0.1:2182] - WARN
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@1278] - Session 0x0
> for sever localhost/127.0.0.1:2182, Closing socket connection. Attempting
> reconnect except it is a
> SessionExpiredException.org.apache.zookeeper.ClientCnxn$SessionTimeoutException:
> Client session timed out, have not heard from server in 30003ms for session
> id 0x0 at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1236)2020-07-17
> 17:45:30,115 [myid:127.0.0.1:2182] - INFO
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@1159] - Opening socket
> connection to server localhost/127.0.0.1:2182.2020-07-17 17:45:30,115
> [myid:127.0.0.1:2182] - INFO
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@1161] - SASL config
> status: Will not attempt to authenticate using SASL (unknown error)2020-07-17
> 17:45:30,116 [myid:127.0.0.1:2182] - INFO
> [main-SendThread(127.0.0.1:2182):ClientCnxn$SendThread@993] - Socket
> connection established, initiating session, client: /127.0.0.1:64223, server:
> localhost/127.0.0.1:2182
> [zk: 127.0.0.1:2182(CONNECTING) 0]
> ./zkServer.sh status
> JMX enabled by default
> Using config: /data/software/zookeeper/zookeeper-two/bin/../conf/zoo.cfg
> Mode: leader
> {code}
> However, we cannot connect to s2,s3, but we can connect to s1 and create
> znodes
> {code:java}
> [zk: 127.0.0.1:2181(CONNECTED) 0] getAllChildrenNumber /
> 1645338
> [zk: 127.0.0.1:2181(CONNECTED) 1] create /test-666
> Created /test-666
> [zk: 127.0.0.1:2181(CONNECTED) 2] create /test-777 "777"
> Created /test-777
> [zk: 127.0.0.1:2181(CONNECTED) 3] get /test-777
> 777
> [zk: 127.0.0.1:2181(CONNECTED) 4] create /test-888 "88"
> Created /test-888
> [zk: 127.0.0.1:2181(CONNECTED) 5] get /test-888
> 88
> {code}
> Attach the logs for debugging
>
>
>
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