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https://issues.apache.org/jira/browse/FLINK-4812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16270522#comment-16270522
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ASF GitHub Bot commented on FLINK-4812:
---------------------------------------
Github user tzulitai commented on a diff in the pull request:
https://github.com/apache/flink/pull/5092#discussion_r153737987
--- Diff:
flink-streaming-java/src/test/java/org/apache/flink/streaming/runtime/operators/StreamSourceOperatorTest.java
---
@@ -224,6 +226,39 @@ public void testLatencyMarkEmission() throws Exception
{
Assert.assertTrue(output.get(i).isWatermark());
}
+ @Test
+ public void testManualWatermarkContextWatermarkMetric() throws
Exception {
--- End diff --
Probably should add verifying the metric value after emitting the
`Long.MAX_VALUE` watermark to this test, just to be on the safe side.
> Report Watermark metrics in all operators
> -----------------------------------------
>
> Key: FLINK-4812
> URL: https://issues.apache.org/jira/browse/FLINK-4812
> Project: Flink
> Issue Type: Improvement
> Components: Metrics
> Reporter: Robert Metzger
> Assignee: Chesnay Schepler
> Priority: Critical
> Fix For: 1.5.0
>
>
> As reported by a user, Flink does currently not export the current low
> watermark for sources
> (http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/currentLowWatermark-metric-not-reported-for-all-tasks-td13770.html).
> This JIRA is for adding such a metric for the sources as well.
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