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https://issues.apache.org/jira/browse/TS-4248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15175019#comment-15175019
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ASF subversion and git services commented on TS-4248:
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Commit a628dd4157338ade211e040b7bdf0e0b6dc73d6c in trafficserver's branch
refs/heads/master from [[email protected]]
[ https://git-wip-us.apache.org/repos/asf?p=trafficserver.git;h=a628dd4 ]
TS-4248: allow metrics to change type on upgrade
New software versions can alter the type of metrics, but when that
happens, the metric from the previous software version has already
been restored from persistence. In this case, we can allow the type
of the metric to change to match the new registration.
> assertions triggered by metric type changes
> -------------------------------------------
>
> Key: TS-4248
> URL: https://issues.apache.org/jira/browse/TS-4248
> Project: Traffic Server
> Issue Type: Bug
> Components: Metrics
> Reporter: James Peach
>
> If we alter the data type of a metric, the records layer asserts because the
> data type of the previously restored metric is not the same. In this case,
> we should allow the registration and just update the metric.
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