StorageProxy sends same message multiple times
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Key: CASSANDRA-2557
URL: https://issues.apache.org/jira/browse/CASSANDRA-2557
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.8 beta 1
Environment: linux
Reporter: Shotaro Kamio
A cassandra node gets multiple mutation messages (in number of times of
replication factor at maximum) for an insert. It may cause high load on the
node. The mutation should be only once for each insert.
This bug is visible via MutationStage count in nodetool tpstats.
For instance, if you have 6 node cluster (initial keys are 31, 32, 33, 34, 35
and 36) with replication factor = 4 and a single data (for example, key='2') is
inserted, MutationStage count will be as follows:
node 1: MutationStage 0 0 4
node 2: MutationStage 0 0 3
node 3: MutationStage 0 0 2
node 4: MutationStage 0 0 1
node 5: MutationStage 0 0 0
node 6: MutationStage 0 0 0
As you can see, the counts are different in each node.
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