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fix(hstore): JRaft Histogram Metrics Value NaN #2631

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Merged
VGalaxies merged 4 commits into from
Nov 6, 2024
Merged

fix(hstore): JRaft Histogram Metrics Value NaN #2631

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80a1663
fix JRaft Histogram Metrics Value NaN
JackyYangPassion Aug 10, 2024
dd2549e
Merge branch 'master' into fix-2627
JackyYangPassion Aug 10, 2024
a0941ae
Merge branch 'master' into fix-2627
imbajin Oct 24, 2024
0b27e43
fix code style
Nov 5, 2024
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56 changes: 14 additions & 42 deletions ...ore/hg-store-node/src/main/java/org/apache/hugegraph/store/node/metrics/JRaftMetrics.java
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Original file line number Diff line number Diff line change
Expand Up @@ -127,10 +127,6 @@ private static void registerNodeMetrics() {

}

private static HistogramWrapper toWrapper(com.codahale.metrics.Histogram histogram) {
return new HistogramWrapper(histogram);
}

private static String refineMetrics(String name, List<Tag> tags) {
if (name == null || name.isEmpty()) {
return name;
Expand Down Expand Up @@ -172,35 +168,33 @@ private static void registerHistogram(String group, String name,

String baseName = PREFIX + "." + name.toLowerCase();

HistogramWrapper wrapper = toWrapper(histogram);

Gauge.builder(baseName + ".median", wrapper, (d) -> d.getSnapshot().getMedian())
Gauge.builder(baseName + ".median", histogram, h -> h.getSnapshot().getMedian())
.tags(tags).register(registry);
Gauge.builder(baseName + ".min", wrapper, (d) -> d.getSnapshot().getMin())
Gauge.builder(baseName + ".min", histogram, h -> h.getSnapshot().getMin())
.tags(tags).register(registry);
Gauge.builder(baseName + ".max", wrapper, (d) -> d.getSnapshot().getMax())
Gauge.builder(baseName + ".max", histogram, h -> h.getSnapshot().getMax())
.tags(tags).register(registry);
Gauge.builder(baseName + ".mean", wrapper, (d) -> d.getSnapshot().getMean())
Gauge.builder(baseName + ".mean", histogram, h -> h.getSnapshot().getMean())
.tags(tags).register(registry);

baseName = baseName + ".summary";
Gauge.builder(baseName, wrapper, (d) -> d.getSnapshot().getMedian())
Gauge.builder(baseName, histogram, h -> h.getSnapshot().getMedian())
.tags(tags).tag(LABELS, LABEL_50).register(registry);
Gauge.builder(baseName, wrapper, (d) -> d.getSnapshot().get75thPercentile())
Gauge.builder(baseName, histogram, h -> h.getSnapshot().get75thPercentile())
.tags(tags).tag(LABELS, LABEL_75).register(registry);
Gauge.builder(baseName, wrapper, (d) -> d.getSnapshot().get95thPercentile())
Gauge.builder(baseName, histogram, h -> h.getSnapshot().get95thPercentile())
.tags(tags).tag(LABELS, LABEL_95).register(registry);
Gauge.builder(baseName, wrapper, (d) -> d.getSnapshot().get98thPercentile())
Gauge.builder(baseName, histogram, h -> h.getSnapshot().get98thPercentile())
.tags(tags).tag(LABELS, LABEL_98).register(registry);
Gauge.builder(baseName, wrapper, (d) -> d.getSnapshot().get99thPercentile())
Gauge.builder(baseName, histogram, h -> h.getSnapshot().get99thPercentile())
.tags(tags).tag(LABELS, LABEL_99).register(registry);
Gauge.builder(baseName, wrapper, (d) -> d.getSnapshot().get999thPercentile())
Gauge.builder(baseName, histogram, h -> h.getSnapshot().get999thPercentile())
.tags(tags).tag(LABELS, LABEL_999).register(registry);

Gauge.builder(baseName + ".sum", wrapper,
(d) -> Arrays.stream(d.getSnapshot().getValues()).sum())
Gauge.builder(baseName + ".sum", histogram,
h -> Arrays.stream(h.getSnapshot().getValues()).sum())
.tags(tags).register(registry);
Gauge.builder(baseName + ".count", wrapper, (d) -> d.getSnapshot().size())
Gauge.builder(baseName + ".count", histogram, h -> h.getSnapshot().size())
.tags(tags).register(registry);

}
Expand All @@ -214,7 +208,7 @@ private static void registerTimer(String group, String name, com.codahale.metric

String baseName = PREFIX + "." + name.toLowerCase();

Gauge.builder(baseName + ".count", timer, t->t.getCount())
Gauge.builder(baseName + ".count", timer, t -> t.getCount())
.tags(tags).register(registry);
Gauge.builder(baseName + ".min", timer, t -> t.getSnapshot().getMin())
.tags(tags).register(registry);
Expand Down Expand Up @@ -309,26 +303,4 @@ private static void registerGauge(String group, String name,
}

}

private static class HistogramWrapper {

private final com.codahale.metrics.Histogram histogram;

private Snapshot snapshot;
private long ts = System.currentTimeMillis();

HistogramWrapper(com.codahale.metrics.Histogram histogram) {
this.histogram = histogram;
this.snapshot = this.histogram.getSnapshot();
}

Snapshot getSnapshot() {
if (System.currentTimeMillis() - this.ts > 30_000) {
this.snapshot = this.histogram.getSnapshot();
this.ts = System.currentTimeMillis();
}
return this.snapshot;
}
}

}