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ColumnFamilyMetrics: add estimated row count histogram

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This adds the estimated row count histogram support to
ColumnFamilyMetrics

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This commit is contained in:
Amnon Heiman 2015-10-04 12:54:31 +03:00
parent 54fe3d7ccf
commit a8292e3e09
1 changed files with 11 additions and 0 deletions
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11
src/main/java/org/apache/cassandra/metrics/ColumnFamilyMetrics.java
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@ -83,6 +83,8 @@ public class ColumnFamilyMetrics {
public final Gauge<Double> compressionRatio;
/** Histogram of estimated row size (in bytes). */
public final Gauge<long[]> estimatedRowSizeHistogram;
/** Approximate number of keys in table. */
public final Gauge<Long> estimatedRowCount;
/** Histogram of estimated number of columns. */
public final Gauge<long[]> estimatedColumnCountHistogram;
/** Histogram of the number of sstable data files accessed per read */
@ -229,6 +231,15 @@ public class ColumnFamilyMetrics {
+ cfName);
}
});
estimatedRowCount= Metrics.newGauge(
factory.createMetricName("EstimatedRowCount"),
new Gauge<Long>() {
public Long value() {
return c.getLongValue("/column_family/metrics/estimated_row_count/"
+ cfName);
}
});
estimatedColumnCountHistogram = Metrics.newGauge(
factory.createMetricName("EstimatedColumnCountHistogram"),
new Gauge<long[]>() {