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Posted to commits@cassandra.apache.org by "Fuud (JIRA)" <ji...@apache.org> on 2017/04/18 11:34:41 UTC

[jira] [Created] (CASSANDRA-13456) Needs better logging for timeout/failures

Fuud created CASSANDRA-13456:
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             Summary: Needs better logging for timeout/failures
                 Key: CASSANDRA-13456
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13456
             Project: Cassandra
          Issue Type: Bug
            Reporter: Fuud


When read was failed due to timeout, Cassandra reports in logs "Timeout; reveived 1 of 3 responses". Same information is passed to clients.

But this information is not enoght to get list of slow nodes. 

Better to have detailed message in debug log:
"Timeout; reveived 1 of 4 responses. Requested but not responded node: [<ip1>, <ip2>], Failed nodes: [<ip3>]"

I implemented such behavior by patching ReadCallback, AbstractWriteResponseHandler, DatacenterSyncWriteResponseHandler and WriteResponseHandler. It handles all cases except Paxos. 

But I want to implement solid solution that handle all cases in same way.

But before I will start I want to know: are there any objections against such logging?



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