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From "Lyuben Todorov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5483) Repair tracing
Date Sun, 06 Jul 2014 20:16:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14053222#comment-14053222
] 

Lyuben Todorov commented on CASSANDRA-5483:
-------------------------------------------

+1 but with a nit:
*Sending completed merkle tree to %s for %s.%s* appears in the logs because of:
{{Tracing.traceRepair("Sending completed merkle tree to %s for %s.%s", initiator, desc.keyspace,
desc.columnFamily);}} in {{Validator#run}}. 

A switch can be made from _%s_ to _{}_ instead of using String.format for the sake of minimalism.


> Repair tracing
> --------------
>
>                 Key: CASSANDRA-5483
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5483
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Tools
>            Reporter: Yuki Morishita
>            Assignee: Ben Chan
>            Priority: Minor
>              Labels: repair
>         Attachments: 5483-full-trunk.txt, 5483-v06-04-Allow-tracing-ttl-to-be-configured.patch,
5483-v06-05-Add-a-command-column-to-system_traces.events.patch, 5483-v06-06-Fix-interruption-in-tracestate-propagation.patch,
5483-v07-07-Better-constructor-parameters-for-DebuggableThreadPoolExecutor.patch, 5483-v07-08-Fix-brace-style.patch,
5483-v07-09-Add-trace-option-to-a-more-complete-set-of-repair-functions.patch, 5483-v07-10-Correct-name-of-boolean-repairedAt-to-fullRepair.patch,
5483-v08-11-Shorten-trace-messages.-Use-Tracing-begin.patch, 5483-v08-12-Trace-streaming-in-Differencer-StreamingRepairTask.patch,
5483-v08-13-sendNotification-of-local-traces-back-to-nodetool.patch, 5483-v08-14-Poll-system_traces.events.patch,
5483-v08-15-Limit-trace-notifications.-Add-exponential-backoff.patch, 5483-v09-16-Fix-hang-caused-by-incorrect-exit-code.patch,
5483-v10-17-minor-bugfixes-and-changes.patch, 5483-v10-rebased-and-squashed-471f5cc.patch,
5483-v11-01-squashed.patch, 5483-v11-squashed-nits.patch, 5483-v12-02-cassandra-yaml-ttl-doc.patch,
5483-v13-608fb03-May-14-trace-formatting-changes.patch, 5483-v14-01-squashed.patch, 5483-v15-02-Hook-up-exponential-backoff-functionality.patch,
5483-v15-03-Exact-doubling-for-exponential-backoff.patch, 5483-v15-04-Re-add-old-StorageService-JMX-signatures.patch,
5483-v15-05-Move-command-column-to-system_traces.sessions.patch, 5483-v15.patch, ccm-repair-test,
cqlsh-left-justify-text-columns.patch, prerepair-vs-postbuggedrepair.diff, test-5483-system_traces-events.txt,
trunk@4620823-5483-v02-0001-Trace-filtering-and-tracestate-propagation.patch, trunk@4620823-5483-v02-0002-Put-a-few-traces-parallel-to-the-repair-logging.patch,
trunk@8ebeee1-5483-v01-001-trace-filtering-and-tracestate-propagation.txt, trunk@8ebeee1-5483-v01-002-simple-repair-tracing.txt,
v02p02-5483-v03-0003-Make-repair-tracing-controllable-via-nodetool.patch, v02p02-5483-v04-0003-This-time-use-an-EnumSet-to-pass-boolean-repair-options.patch,
v02p02-5483-v05-0003-Use-long-instead-of-EnumSet-to-work-with-JMX.patch
>
>
> I think it would be nice to log repair stats and results like query tracing stores traces
to system keyspace. With it, you don't have to lookup each log file to see what was the status
and how it performed the repair you invoked. Instead, you can query the repair log with session
ID to see the state and stats of all nodes involved in that repair session.



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