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From "Lyuben Todorov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5483) Repair tracing
Date Wed, 02 Apr 2014 19:14:19 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13958055#comment-13958055
] 

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

v9 has indeed fixed the high cpu usage. I pushed v8 and v9 to [d9abbfc62319935ef42d4685037f80b292e03e0f|https://github.com/lyubent/cassandra/commit/d9abbfc62319935ef42d4685037f80b292e03e0f]
with only the minor change of giving a name to the thread that [carries out polling|https://github.com/lyubent/cassandra/commit/d9abbfc62319935ef42d4685037f80b292e03e0f#diff-b76a607445d53f18a98c9df14323c7ddR2649]
for nodetool output. The thread name is currently {{RepairTracePolling}} but I'm open to suggestions.


[~usrbincc] I think we should rebase to the latest trunk but the patch is looking good. 

> 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,
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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