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https://issues.apache.org/jira/browse/STORM-1571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15159150#comment-15159150
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ASF GitHub Bot commented on STORM-1571:
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Github user darionyaphet commented on the pull request:
https://github.com/apache/storm/pull/1143#issuecomment-187782060
hi @unsleepy22 this metric is use to count time interval when fetch
messages from Kafka Broker . In fetchMessage() , it's building a
`FetchResponse` , consumer fetch messages from broker and pick out message set
. I think it won't be return in 1ms :)
> Improvment Kafka Spout Time Metric
> ----------------------------------
>
> Key: STORM-1571
> URL: https://issues.apache.org/jira/browse/STORM-1571
> Project: Apache Storm
> Issue Type: Improvement
> Components: storm-kafka
> Affects Versions: 0.9.3, 0.9.4, 0.9.5, 0.9.6
> Environment: Mac 10.11.1 JDK 1.8.0_40
> Reporter: darion yaphet
> Assignee: darion yaphet
> Priority: Minor
> Attachments: 0001-Improvment-Kafka-Spout-Time-Metric.patch
>
>
> Use System.currentTimeMillis() to calculation time interval is better than
> System.nanoTime()
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