Hello,
we have a solr server set up with a pair of replicated solr servers and a
three-node zookeeper front end. This configuration is replicated in several
environments. In one environment, we frequently receive the following
zookeeper-related warning against each of the three webapps that have solr
client interfaces:
*[BLAH_WEBAPP] 2018-08-30 08:34:38,639 WARN
[org.apache.zookeeper.ClientCnxn] - <Session 0x3656c98468b0039 for server
172.16.120.14/172.16.120.14:2282, unexpected error, closing socket
connection and attempting reconnect>
java.lang.NoClassDefFoundError: org/apache/zookeeper/proto/SetWatches
at
org.apache.zookeeper.ClientCnxn$SendThread.primeConnection(ClientCnxn.java:927)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:363)
at
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1144)*
This warning does not cause any noticeable issues other than the fact that
it is generated with considerable frequency and therefore fills our tomcat
AND zookeeper log files.
Still, I would love to be able to figure out what the problem might be and
just get rid of it. I asked on the zookeeper nabble forum, but got no
replies. I would be grateful for any insights. Thanks!
--
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