Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/2219#discussion_r70577752
--- Diff:
flink-core/src/main/java/org/apache/flink/metrics/MetricRegistry.java ---
@@ -64,6 +66,15 @@ public MetricRegistry(Configuration config) {
}
this.scopeFormats = scopeFormats;
+ char delim;
+ try {
+ delim =
config.getString(ConfigConstants.METRICS_SCOPE_DELIMITER, ".").charAt(0);
--- End diff --
Sorry, it was a hick-up of Github, because it didn't show me that I posted
the comment so I thought I clicked on cancel.
Why not changing `ScopeFormat.concat` such that it always takes a delimiter
string as first parameter? Giving `""` as first argument will lead to the
former variant where you don't specify a delimiter.
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