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https://issues.apache.org/jira/browse/HADOOP-15611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16557992#comment-16557992
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Ryan Wu commented on HADOOP-15611:
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I can't agree more. HADOOP-15611.004.patch prints the detail decay info for
each user.
{quote}
2018-07-26 14:47:51,186 DEBUG ipc.DecayRpcScheduler
(DecayRpcScheduler.java:decayCurrentCounts(394)) - Start to decay current
counts.
2018-07-26 14:47:51,190 DEBUG ipc.DecayRpcScheduler
(DecayRpcScheduler.java:decayCurrentCounts(414)) - Decaying counts for the
user: A, its decayedCount: 2, rawCount: 4
2018-07-26 14:47:51,190 DEBUG ipc.DecayRpcScheduler
(DecayRpcScheduler.java:decayCurrentCounts(414)) - Decaying counts for the
user: B, its decayedCount: 4, rawCount: 8
2018-07-26 14:47:51,190 DEBUG ipc.DecayRpcScheduler
(DecayRpcScheduler.java:decayCurrentCounts(431)) - After decaying the stored
counts, totalDecayedCount: 6, totalRawCallCount: 12.
{quote}
> Improve log in FairCallQueue
> ----------------------------
>
> Key: HADOOP-15611
> URL: https://issues.apache.org/jira/browse/HADOOP-15611
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 3.1.0
> Reporter: Ryan Wu
> Priority: Minor
> Attachments: HADOOP-15611.001.patch, HADOOP-15611.002.patch,
> HADOOP-15611.003.patch, HADOOP-15611.004.patch
>
>
> In the usage of the FairCallQueue, we find there missing some Key log. Only a
> few logs are printed, it makes us hard to learn and debug this feature.
> At least, following places can print more logs.
> * DecayRpcScheduler#decayCurrentCounts
> * WeightedRoundRobinMultiplexer#moveToNextQueue
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