I am testing a new ELK cluster.
Reading from kafka in LS --> ES. And my ES logs is full of these errors
[2015-12-26 22:33:35,993][WARN ][transport.netty ] [ltx1-app1234] exception caught on transport layer [[id: 0xf4556a30, /10.149.108.27:39248 => /10.149.74.222:9300]], closing connection
java.lang.IllegalStateException: Message not fully read (request) for requestId , action [internal:discovery/zen/unicast_gte_1_4], readerIndex  vs expected ; resetting
It turns out 10.149.108.27 is my tribe node running 1.7.3. So this is just FYI for people who are seeing these errors in their logs. Tribe nodes pre 2.x will not work with ES 2.0 and newer