[FLINK-9241] Usage docs for ScalaGauge doesn't work

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.2, 1.5.0
• Fix Version/s: 1.4.3, 1.5.0
• Component/s: Documentation, Runtime / Metrics
• Assignee: Chesnay Schepler
• Reporter: Julio Biason
• Created: 23/Apr/18 20:22
• Updated: 24/Apr/18 08:08
• Resolved: 24/Apr/18 08:08

Description

In the docs, the example for using a gauge metric in scala 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 ))