Github user greghogan commented on a diff in the pull request:
https://github.com/apache/flink/pull/2902#discussion_r90272935
--- Diff:
flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/handlers/TaskManagersHandler.java
---
@@ -124,13 +124,21 @@ public String handleJsonRequest(Map<String, String>
pathParams, Map<String, Stri
gen.writeNumberField("totalUsed", heapUsed + nonHeapUsed);
gen.writeNumberField("totalMax", heapTotal + nonHeapTotal);
-
gen.writeStringField("directCount",
metrics.getMetric("Status.JVM.Memory.Direct.Count", "0"));
-
gen.writeStringField("directUsed",
metrics.getMetric("Status.JVM.Memory.Direct.MemoryUsed", "0"));
-
gen.writeStringField("directMax",
metrics.getMetric("Status.JVM.Memory.Direct.TotalCapacity", "0"));
+ long directCount =
Long.valueOf(metrics.getMetric("Status.JVM.Memory.direct.Count", "0"));
--- End diff --
Some of the numeric metrics were passed as long and some as string. I would
expect someone consuming the JSON to prefer numeric values.
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