本文整理汇总了Java中org.apache.hadoop.hbase.metrics.histogram.MetricsHistogram.getSnapshot方法的典型用法代码示例。如果您正苦于以下问题：Java MetricsHistogram.getSnapshot方法的具体用法？Java MetricsHistogram.getSnapshot怎么用？Java MetricsHistogram.getSnapshot使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hbase.metrics.histogram.MetricsHistogram的用法示例。
在下文中一共展示了MetricsHistogram.getSnapshot方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: appendHistogram
import org.apache.hadoop.hbase.metrics.histogram.MetricsHistogram; //导入方法依赖的package包/类
private StringBuilder appendHistogram(StringBuilder sb,
MetricsHistogram histogram) {
sb = Strings.appendKeyValue(sb,
histogram.getName() + "Mean",
StringUtils.limitDecimalTo2(histogram.getMean()));
sb = Strings.appendKeyValue(sb,
histogram.getName() + "Count",
StringUtils.limitDecimalTo2(histogram.getCount()));
final Snapshot s = histogram.getSnapshot();
sb = Strings.appendKeyValue(sb,
histogram.getName() + "Median",
StringUtils.limitDecimalTo2(s.getMedian()));
sb = Strings.appendKeyValue(sb,
histogram.getName() + "75th",
StringUtils.limitDecimalTo2(s.get75thPercentile()));
sb = Strings.appendKeyValue(sb,
histogram.getName() + "95th",
StringUtils.limitDecimalTo2(s.get95thPercentile()));
sb = Strings.appendKeyValue(sb,
histogram.getName() + "99th",
StringUtils.limitDecimalTo2(s.get99thPercentile()));
sb = Strings.appendKeyValue(sb,
histogram.getName() + "999th",
StringUtils.limitDecimalTo2(s.get999thPercentile()));
return sb;
}
示例2: testSnapshotPercentiles
import org.apache.hadoop.hbase.metrics.histogram.MetricsHistogram; //导入方法依赖的package包/类
@Test
public void testSnapshotPercentiles() {
final MetricsHistogram h = new MetricsHistogram("testHistogram", null);
final long[] data = genRandomData(h);
final Snapshot s = h.getSnapshot();
assertPercentile(data, 50, s.getMedian());
assertPercentile(data, 75, s.get75thPercentile());
assertPercentile(data, 95, s.get95thPercentile());
assertPercentile(data, 98, s.get98thPercentile());
assertPercentile(data, 99, s.get99thPercentile());
assertPercentile(data, 99.9, s.get999thPercentile());
}
示例3: testRandom
import org.apache.hadoop.hbase.metrics.histogram.MetricsHistogram; //导入方法依赖的package包/类
@Test
public void testRandom() {
final Random r = new Random();
final MetricsHistogram h = new MetricsHistogram("testHistogram", null);
final long[] data = new long[1000];
for (int i = 0; i < data.length; i++) {
data[i] = (long) (r.nextGaussian() * 10000.0);
h.update(data[i]);
}
final Snapshot s = h.getSnapshot();
Arrays.sort(data);
// as long as the histogram chooses an item with index N+/-slop, accept it
final int slop = 20;
// make sure the median, 75th percentile and 95th percentile are good
final int medianIndex = data.length / 2;
final long minAcceptableMedian = data[safeIndex(medianIndex - slop,
data.length)];
final long maxAcceptableMedian = data[safeIndex(medianIndex + slop,
data.length)];
Assert.assertTrue(s.getMedian() >= minAcceptableMedian
&& s.getMedian() <= maxAcceptableMedian);
final int seventyFifthIndex = (int) (data.length * 0.75);
final long minAcceptableseventyFifth = data[safeIndex(seventyFifthIndex
- slop, data.length)];
final long maxAcceptableseventyFifth = data[safeIndex(seventyFifthIndex
+ slop, data.length)];
Assert.assertTrue(s.get75thPercentile() >= minAcceptableseventyFifth
&& s.get75thPercentile() <= maxAcceptableseventyFifth);
final int ninetyFifthIndex = (int) (data.length * 0.95);
final long minAcceptableninetyFifth = data[safeIndex(ninetyFifthIndex
- slop, data.length)];
final long maxAcceptableninetyFifth = data[safeIndex(ninetyFifthIndex
+ slop, data.length)];
Assert.assertTrue(s.get95thPercentile() >= minAcceptableninetyFifth
&& s.get95thPercentile() <= maxAcceptableninetyFifth);
}