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Posted to commits@hbase.apache.org by st...@apache.org on 2014/07/23 22:22:30 UTC
git commit: HBASE-11573 Report age on eviction; ADD FORGOTTEN FILE
Repository: hbase
Updated Branches:
refs/heads/branch-1 01f253b99 -> 040936845
HBASE-11573 Report age on eviction; ADD FORGOTTEN FILE
Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/04093684
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/04093684
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/04093684
Branch: refs/heads/branch-1
Commit: 04093684543717b48ff90ee1d3c4700165e4a7d3
Parents: 01f253b
Author: stack <st...@apache.org>
Authored: Wed Jul 23 13:22:20 2014 -0700
Committer: stack <st...@apache.org>
Committed: Wed Jul 23 13:22:20 2014 -0700
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.../hadoop/hbase/io/hfile/AgeSnapshot.java | 74 ++++++++++++++++++++
1 file changed, 74 insertions(+)
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http://git-wip-us.apache.org/repos/asf/hbase/blob/04093684/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/AgeSnapshot.java
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diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/AgeSnapshot.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/AgeSnapshot.java
new file mode 100644
index 0000000..24a4e32
--- /dev/null
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/AgeSnapshot.java
@@ -0,0 +1,74 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.io.hfile;
+
+import org.codehaus.jackson.annotate.JsonIgnoreProperties;
+
+import com.yammer.metrics.core.Histogram;
+import com.yammer.metrics.stats.Snapshot;
+
+/**
+ * Snapshot of block cache age in cache.
+ * This object is preferred because we can control how it is serialized out when JSON'ing.
+ */
+@JsonIgnoreProperties({"ageHistogram", "snapshot"})
+public class AgeSnapshot {
+ private final Histogram ageHistogram;
+ private final Snapshot snapshot;
+
+ AgeSnapshot(final Histogram ageHistogram) {
+ this.ageHistogram = ageHistogram;
+ this.snapshot = ageHistogram.getSnapshot();
+ }
+
+ public double get75thPercentile() {
+ return snapshot.get75thPercentile();
+ }
+
+ public double get95thPercentile() {
+ return snapshot.get95thPercentile();
+ }
+
+ public double get98thPercentile() {
+ return snapshot.get98thPercentile();
+ }
+
+ public double get999thPercentile() {
+ return snapshot.get999thPercentile();
+ }
+
+ public double get99thPercentile() {
+ return snapshot.get99thPercentile();
+ }
+
+ public double getMean() {
+ return this.ageHistogram.mean();
+ }
+
+ public double getMax() {
+ return ageHistogram.max();
+ }
+
+ public double getMin() {
+ return ageHistogram.min();
+ }
+
+ public double getStdDev() {
+ return ageHistogram.stdDev();
+ }
+}