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https://issues.apache.org/jira/browse/FLINK-10990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16697515#comment-16697515
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ASF GitHub Bot commented on FLINK-10990:
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zentol commented on a change in pull request #7165:
[FLINK-10990][Metric]Pre-check timespan in meterview to avoid NAN
URL: https://github.com/apache/flink/pull/7165#discussion_r236018552
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File path:
flink-metrics/flink-metrics-core/src/main/java/org/apache/flink/metrics/MeterView.java
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@@ -44,12 +47,19 @@
/** The last rate we computed. */
private double currentRate = 0;
+ private static Logger logger = LoggerFactory.getLogger(MeterView.class);
Review comment:
should be static and named `LOG`
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> Pre-check timespan in meterview to avoid NAN
> --------------------------------------------
>
> Key: FLINK-10990
> URL: https://issues.apache.org/jira/browse/FLINK-10990
> Project: Flink
> Issue Type: Bug
> Components: Metrics
> Affects Versions: 1.7.0
> Reporter: aitozi
> Assignee: aitozi
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.7.0
>
>
> In the metric tool MeterView. If user use the meterview with the timespan
> smaller than UPDATE_INTERVAL_SECONDS = 5 , the getRate will always return 0/0
> = NAN. And this is not friendly , I think we should pre-check it.
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