rdingankar commented on code in PR #5495:
URL: https://github.com/apache/hadoop/pull/5495#discussion_r1152330757
##########
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/metrics2/util/TestSampleQuantiles.java:
##########
@@ -118,4 +119,40 @@ public void testQuantileError() throws IOException {
}
}
}
+
+ /**
+ * Correctness test that checks that absolute error of the estimate for
inverse quantiles
+ * is within specified error bounds for some randomly permuted streams of
items.
+ */
+ @Test
+ public void testInverseQuantiles() throws IOException {
+ SampleQuantiles inverseQuantilesEstimator = new
SampleQuantiles(MutableInverseQuantiles.INVERSE_QUANTILES);
+ final int count = 100000;
+ Random r = new Random(0xDEADDEAD);
Review Comment:
The Random object is used as source of randomness to shuffle the sample
array.
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