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https://issues.apache.org/jira/browse/FLINK-9241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16448813#comment-16448813
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Julio Biason commented on FLINK-9241:
-------------------------------------
Related piece of code:
{{ @transient private var meanLateness = 0}}
{{ override def open(parameters:Configuration):Unit = {}}
{{ getRuntimeContext}}
{{ .getMetricGroup}}
{{ .addGroup(groupName)}}
{{ .gauge("meanLateness", ScalaGauge[Int] ( () => meanLateness ))}}
{{ }}}
> Scala version of Gauge (metric) doesn't work
> --------------------------------------------
>
> Key: FLINK-9241
> URL: https://issues.apache.org/jira/browse/FLINK-9241
> Project: Flink
> Issue Type: Bug
> Components: Documentation
> Reporter: Julio Biason
> Priority: Major
>
> In the docs, the example for [using a gauge metric in
> scala|https://ci.apache.org/projects/flink/flink-docs-release-1.4/monitoring/metrics.html#gauge]
> doesn't even compile:
> {{[error]
> /vagrant/src/main/scala/net/juliobiason/pipeline/sideoutputs.scala:34:
> overloaded method value gauge with alternatives:}}
> {{[error] [T, G <: org.apache.flink.metrics.Gauge[T]](x$1: String, x$2: G)G
> <and>}}
> {{[error] [T, G <: org.apache.flink.metrics.Gauge[T]](x$1: Int, x$2: G)G}}
> {{[error] cannot be applied to (String,
> org.apache.flink.api.scala.metrics.ScalaGauge[Int])}}
> {{[error] .gauge("meanLateness", ScalaGauge[Int] ( () => meanLateness
> ))}}
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