Hi,
I am running cluster of two Apache ManifoldCF nodes on two separate
machines each of which having 3 zookeeper instances (total 6 instances in
cluster). When i am running up manifoldCF agents, i see below warning
during startup.
[http-bio-80-exec-2-SendThread(iwdc1preecma03.iwater.ie:2181)] INFO
org.apache.zookeeper.ClientCnxn - Unable to read additional data from
server sessionid 0x0, likely server has closed socket, closing socket
connection and attempting reconnect
[http-bio-80-exec-2-SendThread(iwdc2preecma04.iwater.ie:2182)] INFO
org.apache.zookeeper.ClientCnxn - Opening socket connection to server
iwdc2preecma04.iwater.ie/10.231.72.25:2182. Will not attempt to
authenticate using SASL (unknown error)
Also i could see below error in logs in while agents are running.
[localhost-startStop-1-SendThread(iwdc1preecma03.iwater.ie:2183)] WARN
org.apache.zookeeper.ClientCnxn - Session 0x6485a8006060079 for server
iwdc1preecma03.iwater.ie/10.231.72.24:2183, unexpected error, closing
socket connection and attempting reconnect
java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:225)
at sun.nio.ch.IOUtil.read(IOUtil.java:193)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:375)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:68)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:355)
at
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
Below are configurations for 1. zookeeper nodes & 2. MCF nodes for
zookeeper.
*zoo.cfg : Same for all six zookeeper nodes.*
# The number of milliseconds of each tick
tickTime=2000
dataDir=/app/IW/zookeeper/data/data.1
dataLogDir=/app/IW/zookeeper/logs/log.1
clientPort=2181
server.1=iwdc1preecma03:2888:3888
server.2=iwdc1preecma03:2889:3889
server.3=iwdc1preecma03:2890:3890
server.4=iwdc2preecma04:2891:3891
server.5=iwdc2preecma04:2892:3892
server.6=iwdc2preecma04:2893:3893
# The number of ticks that the initial
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
#dataDir=/tmp/zookeeper
# the port at which the clients will connect
#clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
autopurge.purgeInterval=1
*ManifoldCF configurations : same for both ManifoldCF nodes.*
<property name="org.apache.manifoldcf.lockmanagerclass"
value="org.apache.manifoldcf.core.lockmanager.ZooKeeperLockManager"/>
<property name="org.apache.manifoldcf.zookeeper.connectstring"
value="iwdc1preecma03:2181,iwdc1preecma03:2182,iwdc1preecma03:2183,iwdc2preecma04:2181,iwdc2preecma04:2182,iwdc2preecma04:2183"/>
<property name="org.apache.manifoldcf.zookeeper.sessiontimeout"
value="4000"/>
*I want to know if due to above warnings/errors, will zookeeper stop
working or will zookeeper will work and these are non-failing messages,
because ManifoldCF jobs are stuck while i can see these errors.*
Please suggest.
Regards,
Lalit.
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