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Date: Wed, 20 Apr 2011 00:30:06 +0000 (UTC)
From: "Narendra Sharma (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] [Created] (CASSANDRA-2514) batch_mutate operations with
 CL=LOCAL_QUORUM throw TimeOutException when there aren't sufficient live
 nodes
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batch_mutate operations with CL=LOCAL_QUORUM throw TimeOutException when there aren't sufficient live nodes
-----------------------------------------------------------------------------------------------------------

                 Key: CASSANDRA-2514
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2514
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 0.7.4
         Environment: 1. Cassandra 0.7.4 running on RHEL 5.5
2. 2 DC setup
3. RF = 4 (DC1 = 2, DC2 = 2)
4. CL = LOCAL_QUORUM
            Reporter: Narendra Sharma
             Fix For: 0.7.5


We have a 2 DC setup with RF = 4. There are 2 nodes in each DC. Following is the keyspace definition:
<snip>
keyspaces:
    - name: KeyspaceMetadata
      replica_placement_strategy: org.apache.cassandra.locator.NetworkTopologyStrategy
      strategy_options:
        DC1 : 2
        DC2 : 2
      replication_factor: 4
</snip>

I shutdown all except one node and waited for the live node to recognize that other nodes are dead. Following is the nodetool ring output on the live node:
Address         Status State   Load            Owns    Token                                       
                                                       169579575332184635438912517119426957796     
10.17.221.19    Down   Normal  ?               29.20%  49117425183422571410176530597442406739      
10.17.221.17    Up     Normal  81.64 KB        4.41%   56615248844645582918169246064691229930      
10.16.80.54     Down   Normal  ?               21.13%  92563519227261352488017033924602789201      
10.17.221.18    Down   Normal  ?               45.27%  169579575332184635438912517119426957796     

I expect UnavailableException when I send batch_mutate request to node that is up. However, it returned TimeOutException:
TimedOutException()
    at org.apache.cassandra.thrift.Cassandra$batch_mutate_result.read(Cassandra.java:16493)
    at org.apache.cassandra.thrift.Cassandra$Client.recv_batch_mutate(Cassandra.java:916)
    at org.apache.cassandra.thrift.Cassandra$Client.batch_mutate(Cassandra.java:890)

Following is the cassandra-topology.properties
# Cassandra Node IP=Data Center:Rack
10.17.221.17=DC1:RAC1
10.17.221.19=DC1:RAC2

10.17.221.18=DC2:RAC1
10.16.80.54=DC2:RAC2


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