One of the zookeeper server is not accepting any requests
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Key: ZOOKEEPER-1294
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1294
Project: ZooKeeper
Issue Type: Bug
Components: server
Environment: 3 Zookeeper + 3 Observer with SuSe-11
Reporter: amith
In zoo.cfg i have configured as
server.1 = XX.XX.XX.XX:65175:65173
server.2 = XX.XX.XX.XX:65185:65183
server.3 = XX.XX.XX.XX:65195:65193
server.4 = XX.XX.XX.XX:65205:65203:observer
server.5 = XX.XX.XX.XX:65215:65213:observer
server.6 = XX.XX.XX.XX:65225:65223:observer
Like above I have configured 3 PARTICIPANTS and 3 OBSERVERS
in the cluster of 6 zookeepers
Steps to reproduce the defect
1. Start all the 3 participant zookeeper
2. Stop all the participant zookeeper
3. Start zookeeper 1(Participant)
4. Start zookeeper 2(Participant)
5. Start zookeeper 4(Observer)
6. Create a persistent node with external client and close it
7. Stop the zookeeper 1(Participant neo quorum is unstable)
8. Create a new client and try to find the node created b4 using exists api
(will fail since quorum not statisfied)
9. Start the Zookeeper 1 (Participant stabilise the quorum)
Now check the observer using 4 letter word (Server.4)
linux-216:/home/amith/CI/source/install/zookeeper/zookeeper2/bin # echo stat |
netcat localhost 65200
Zookeeper version: 3.3.2-1031432, built on 11/05/2010 05:32 GMT
Clients:
/127.0.0.1:46370[0](queued=0,recved=1,sent=0)
Latency min/avg/max: 0/0/0
Received: 1
Sent: 0
Outstanding: 0
Zxid: 0x100000003
Mode: observer
Node count: 5
check the participant 2 with 4 letter word
Latency min/avg/max: 22/48/83
Received: 39
Sent: 3
Outstanding: 35
Zxid: 0x100000003
Mode: leader
Node count: 5
linux-216:/home/amith/CI/source/install/zookeeper/zookeeper2/bin #
check the participant 1 with 4 letter word
linux-216:/home/amith/CI/source/install/zookeeper/zookeeper2/bin # echo stat |
netcat localhost 65170
This ZooKeeper instance is not currently serving requests
We can see the participant1 logs filled with
2011-11-08 15:49:51,360 - WARN
[NIOServerCxn.Factory:0.0.0.0/0.0.0.0:65170:NIOServerCnxn@642] - Exception
causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not
running
Problem here is participent1 is not responding / accepting any requests
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