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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: "Ignorning message." showing in the log while upgrade to 0.8
Date Fri, 16 Sep 2011 15:29:17 GMT
On Fri, Sep 16, 2011 at 9:42 AM, Yan Chunlu <springrider@gmail.com> wrote:
> I am running local tests about upgrade cassandra.  upgrade from 0.7.4 to
> 0.8.5
> after upgrade one node1,  two problem happened:
> 1,  node2 keep saying:
> "Received connection from newer protocol version. Ignorning message."
> is that normal behaviour?

Yes.  It will take a few exchanges before the new node knows to use
the older protocol with the 0.7 nodes.

> 2, while running "describe cluster" on node1, it shows node2 unreachable:
> Cluster Information:
>    Snitch: org.apache.cassandra.locator.SimpleSnitch
>    Partitioner: org.apache.cassandra.dht.RandomPartitioner
>    Schema versions:
> UNREACHABLE: [node2]
> 05f1ee3b-e063-11e0-97d5-63c2fb3f0ca8: [node1, node3]
> node3 seems act normal.
>
> I saw the JMXPORT has changed since 0.8, is that the reason node was
> unreachable?

No.

-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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