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From shimi <shim...@gmail.com>
Subject Read time get worse during dynamic snitch reset
Date Mon, 11 Apr 2011 13:28:05 GMT
I finally upgraded 0.6.x to 0.7.4.  The nodes are running with the new
version for several days across 2 data centers.
I noticed that the read time in some of the nodes increase by x50-60 every
ten minutes.
There was no indication in the logs for something that happen at the same
time. The only thing that I know that is running every 10 minutes is
the dynamic snitch reset.
So I changed dynamic_snitch_reset_interval_in_ms to 20 minutes and now I
have the problem once in every 20 minutes.

I am running all nodes with:
replica_placement_strategy:
org.apache.cassandra.locator.NetworkTopologyStrategy
      strategy_options:
        DC1 : 2
        DC2 : 2
      replication_factor: 4

(DC1 and DC2 are taken from the ips)
Does anyone familiar with this kind of behavior?

Shimi

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