Dean Hiller created CASSANDRA-5333:
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Summary: dynamic snitch only worked for NetworkTopology due to
RemoteNode
Key: CASSANDRA-5333
URL: https://issues.apache.org/jira/browse/CASSANDRA-5333
Project: Cassandra
Issue Type: Bug
Affects Versions: 1.2.2
Environment: redhat linux. we dug into the code though and it appears
to be the way it is coded. we were told to file a ticket for this on the email
list.
Reporter: Dean Hiller
We dug into cassandra code and found out SimpleSnitch was not working with
DynamicSnitch. Specifically, the code turns a slow node into a remote node and
network topology works with that. We also had to move to LOCAL_QUOROM and
finally we have dynamic snitch working. To test this, we basically told the
NIC using the "tc" command to slow every packet down by 500ms on node 2 (out of
4 nodes). We finally have a blazingly fast client with node 2 slowed down. If
we do QUOROM, the issue comes back and the client is slow again. Same with
SimpleSnitch. To reproduce, run a 4 node cluster and use "tc" to give every
packet a slowdown of 500ms.
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