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https://issues.apache.org/jira/browse/FLINK-4812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16278794#comment-16278794
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ASF GitHub Bot commented on FLINK-4812:
---------------------------------------
Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/5125#discussion_r154986979
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/StreamOperator.java
---
@@ -135,4 +135,14 @@ OperatorSnapshotResult snapshotState(
MetricGroup getMetricGroup();
OperatorID getOperatorID();
+
--- End diff --
If we keep this it should be marked `@Internal`.
> 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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