On 06/26/2010 06:53 AM, Peeyush Kumar wrote:
I have a 6 node cluster (5 slaves and 1 master). I am trying to
You typically want an odd number given that zk works by majority (even
is fine, but not optimal). So 5 would be great (7 is a bit of overkill).
3 is fine too, but 5 allows for you to take 1 server down for "scheduled
maintenance" and still experience an unexpected failure w/o impact to
service availability.
In your exception I see "DatagramSocket" this is unusual. What are you
running for ZK version? As Lei suggested please include your config file
so that we can review that as well (if you are overriding electionAlg
this might be part of the problem. Current versions of ZK servers use
tcp for connections by default, that's why this is unusual.)
Most likely there is either a config problem or perhaps you have a
firewall that's blocking communication btw the servers? Try verifying
server to server connectivity on the ports you've selected.
Patrick
start the zookeper server on the cluster. when I issue this command:
$ java -cp zookeeper.jar:lib/log4j-1.2.15.jar:conf \
org.apache.zookeeper.server.quorum.QuorumPeerMain zoo.cfg
I get the following error:
2010-06-26 18:09:17,468 - INFO [main:quorumpeercon...@80] - Reading
configuration from: conf/zoo.cfg
2010-06-26 18:09:17,483 - INFO [main:quorumpeercon...@232] - Defaulting to
majority quorums
2010-06-26 18:09:17,545 - INFO [main:quorumpeerm...@118] - Starting quorum
peer
2010-06-26 18:09:17,585 - INFO [QuorumPeer:/0.0.0.0:2179:quorump...@514] -
LOOKING
2010-06-26 18:09:17,589 - INFO [QuorumPeer:/0.0.0.0:2179:leaderelect...@154]
- Server address: master.cf.net/192.168.1.1:2180
2010-06-26 18:09:17,589 - INFO [QuorumPeer:/0.0.0.0:2179:leaderelect...@154]
- Server address: slave01.cf.net/192.168.1.2:2180
2010-06-26 18:09:17,792 - WARN [QuorumPeer:/0.0.0.0:2179:leaderelect...@194]
- Ignoring exception while looking for
leader
java.net.SocketTimeoutException: Receive timed
out
at java.net.PlainDatagramSocketImpl.receive0(Native
Method)
at
java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)
at
java.net.DatagramSocket.receive(DatagramSocket.java:725)
at
org.apache.zookeeper.server.quorum.LeaderElection.lookForLeader(LeaderElection.java:170)
at
org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:515)
2010-06-26 18:09:17,794 - INFO [QuorumPeer:/0.0.0.0:2179:leaderelect...@154]
- Server address: slave02.cf.net/192.168.1.3:2180
2010-06-26 18:09:17,995 - WARN [QuorumPeer:/0.0.0.0:2179:leaderelect...@194]
- Ignoring exception while looking for
leader
java.net.SocketTimeoutException: Receive timed
out
at java.net.PlainDatagramSocketImpl.receive0(Native
Method)
at
java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)
at
java.net.DatagramSocket.receive(DatagramSocket.java:725)
at
org.apache.zookeeper.server.quorum.LeaderElection.lookForLeader(LeaderElection.java:170)
at
org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:515)
2010-06-26 18:09:17,996 - INFO [QuorumPeer:/0.0.0.0:2179:leaderelect...@154]
- Server address: slave03.cf.net/192.168.1.4:2180
2010-06-26 18:09:18,197 - WARN [QuorumPeer:/0.0.0.0:2179:leaderelect...@194]
- Ignoring exception while looking for
leader
java.net.SocketTimeoutException: Receive timed
out
at java.net.PlainDatagramSocketImpl.receive0(Native
Method)
at
java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)
at
java.net.DatagramSocket.receive(DatagramSocket.java:725)
at
org.apache.zookeeper.server.quorum.LeaderElection.lookForLeader(LeaderElection.java:170)
at
org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:515)
2010-06-26 18:09:18,200 - INFO [QuorumPeer:/0.0.0.0:2179:leaderelect...@154]
- Server address: slave04.cf.net/192.168.1.5:2180
2010-06-26 18:09:18,401 - WARN [QuorumPeer:/0.0.0.0:2179:leaderelect...@194]
- Ignoring exception while looking for
leader
java.net.SocketTimeoutException: Receive timed
out
at java.net.PlainDatagramSocketImpl.receive0(Native
Method)
at
java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)
at
java.net.DatagramSocket.receive(DatagramSocket.java:725)
at
org.apache.zookeeper.server.quorum.LeaderElection.lookForLeader(LeaderElection.java:170)
at
org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:515)
2010-06-26 18:09:18,402 - INFO [QuorumPeer:/0.0.0.0:2179:leaderelect...@154]
- Server address: slave05.cf.net/192.168.1.6:2180
2010-06-26 18:09:18,604 - WARN [QuorumPeer:/0.0.0.0:2179:leaderelect...@194]
- Ignoring exception while looking for
leader
java.net.SocketTimeoutException: Receive timed
out
at java.net.PlainDatagramSocketImpl.receive0(Native
Method)
at
java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)
at
java.net.DatagramSocket.receive(DatagramSocket.java:725)
at
org.apache.zookeeper.server.quorum.LeaderElection.lookForLeader(LeaderElection.java:170)
at
org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:515)
2010-06-26 18:09:18,605 - INFO [QuorumPeer:/0.0.0.0:2179:leaderelect...@102]
- Election tally:
2010-06-26 18:09:18,606 - INFO [QuorumPeer:/0.0.0.0:2179:leaderelect...@108]
- 1 -> 1
.....this error continues indefinitely....
can anyone please help me around this?
Your help is solicited
Thanks
Peeyush
