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The following commit(s) were added to refs/heads/4.x by this push:
new e3b1568 PHOENIX-6379 Implement a new Metric Type which will be used
for Table… (#1139)
e3b1568 is described below
commit e3b1568dc0693517892b99f4f11ce2ed703628f3
Author: vikas meka <vm...@salesforce.com>
AuthorDate: Thu Feb 11 18:27:24 2021 -0800
PHOENIX-6379 Implement a new Metric Type which will be used for Table…
(#1139)
PHOENIX-6379 Implement a new Metric Type which will be used for TableMetrics
---
.../phoenix/monitoring/PhoenixTableMetric.java | 37 ++++++++
.../phoenix/monitoring/PhoenixTableMetricImpl.java | 77 +++++++++++++++++
.../monitoring/PhoenixTableMetricImplTest.java | 98 ++++++++++++++++++++++
3 files changed, 212 insertions(+)
diff --git
a/phoenix-core/src/main/java/org/apache/phoenix/monitoring/PhoenixTableMetric.java
b/phoenix-core/src/main/java/org/apache/phoenix/monitoring/PhoenixTableMetric.java
new file mode 100644
index 0000000..aa8d31d
--- /dev/null
+++
b/phoenix-core/src/main/java/org/apache/phoenix/monitoring/PhoenixTableMetric.java
@@ -0,0 +1,37 @@
+/*
+ * 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.phoenix.monitoring;
+
+/**
+ * Class that exposes the various phoenix metrics collected
+ * at the Table level. Because metrics are dynamic in nature, it is not
guaranteed that the
+ * state exposed will always be in sync with each other. One should use
+ * these metrics primarily for monitoring and debugging purposes.
+ */
+public interface PhoenixTableMetric extends Metric {
+
+ /**
+ * @return Number of samples collected since the last {@link #reset()}
call.
+ */
+ public long getNumberOfSamples();
+
+ /**
+ * @return Sum of the values of the metric sampled since the last {@link
#reset()} call.
+ */
+ public long getTotalSum();
+}
diff --git
a/phoenix-core/src/main/java/org/apache/phoenix/monitoring/PhoenixTableMetricImpl.java
b/phoenix-core/src/main/java/org/apache/phoenix/monitoring/PhoenixTableMetricImpl.java
new file mode 100644
index 0000000..2fbf6a7
--- /dev/null
+++
b/phoenix-core/src/main/java/org/apache/phoenix/monitoring/PhoenixTableMetricImpl.java
@@ -0,0 +1,77 @@
+/*
+ * 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.phoenix.monitoring;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+public class PhoenixTableMetricImpl implements PhoenixTableMetric {
+
+ private AtomicLong numberOfSamples = new AtomicLong(0);
+ private Metric metric;
+
+ /**
+ * Default implementation used when TableLevel Metrics are enabled
+ */
+ public PhoenixTableMetricImpl(MetricType type) {
+ this.metric = new AtomicMetric(type);
+ }
+
+ /**
+ * Reset the internal state. Typically called after metric information has
been collected and a new phase of
+ * collection is being requested for the next interval.
+ */
+ @Override public void reset() {
+ metric.reset();
+ numberOfSamples.set(0);
+ }
+
+ @Override public long getNumberOfSamples() {
+ return numberOfSamples.get();
+ }
+
+ @Override public long getTotalSum() {
+ return metric.getValue();
+ }
+
+ @Override public void change(long delta) {
+ metric.change(delta);
+ numberOfSamples.incrementAndGet();
+ }
+
+ @Override public void increment() {
+ metric.increment();
+ numberOfSamples.incrementAndGet();
+ }
+
+ @Override public MetricType getMetricType() {
+ return metric.getMetricType();
+ }
+
+ @Override public long getValue() {
+ return metric.getValue();
+ }
+
+ @Override public String getCurrentMetricState() {
+ return metric.getCurrentMetricState() + ", Number of samples: " +
numberOfSamples.get();
+ }
+
+ @Override public void decrement() {
+ metric.decrement();
+ numberOfSamples.incrementAndGet();
+ }
+}
diff --git
a/phoenix-core/src/test/java/org/apache/phoenix/monitoring/PhoenixTableMetricImplTest.java
b/phoenix-core/src/test/java/org/apache/phoenix/monitoring/PhoenixTableMetricImplTest.java
new file mode 100644
index 0000000..87eac17
--- /dev/null
+++
b/phoenix-core/src/test/java/org/apache/phoenix/monitoring/PhoenixTableMetricImplTest.java
@@ -0,0 +1,98 @@
+/*
+ * 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.phoenix.monitoring;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class PhoenixTableMetricImplTest {
+
+ /*
+ Tests the functionality of the TableMetricImpl methods which are exposed
+ 1. change()
+ 2. increment()
+ 3. decrement()
+ 4. reset()
+ 5. getValue()
+ */
+ @Test public void testTableMetricImplAvailableMethods() {
+
+ PhoenixTableMetric metric = new
PhoenixTableMetricImpl(MetricType.SELECT_SQL_COUNTER);
+
+ for (int i = 0; i < 10; i++) {
+ metric.increment();
+ }
+ assertEquals(10, metric.getValue());
+ metric.reset();
+ assertEquals(0, metric.getValue());
+
+ for (int i = 0; i < 5; i++) {
+ metric.change(i);
+ }
+ assertEquals(10, metric.getValue());
+ metric.reset();
+ assertEquals(0, metric.getValue());
+
+ metric.change(10);
+ assertEquals(10, metric.getValue());
+ for (int i = 0; i < 5; i++) {
+ metric.decrement();
+ }
+ assertEquals(5, metric.getValue());
+ }
+
+ @Test public void testPhoenixImplchange() {
+
+ PhoenixTableMetric metric = new
PhoenixTableMetricImpl(MetricType.SELECT_SQL_COUNTER);
+ for (int i = 0; i < 5; i++) {
+ metric.change(i);
+ }
+ assertEquals(10, metric.getValue());
+ }
+
+ @Test public void testPhoenixImplIncrement() {
+ PhoenixTableMetric metric = new
PhoenixTableMetricImpl(MetricType.SELECT_SQL_COUNTER);
+ for (int i = 0; i < 10; i++) {
+ metric.increment();
+ }
+ assertEquals(10, metric.getValue());
+ }
+
+ @Test public void testPhoenixImplDecrement() {
+ PhoenixTableMetric metric = new
PhoenixTableMetricImpl(MetricType.SELECT_SQL_COUNTER);
+ metric.change(10);
+ for (int i = 0; i < 5; i++) {
+ metric.decrement();
+ }
+ assertEquals(5, metric.getValue());
+ }
+
+ @Test public void testPhoenixImplReset() {
+ PhoenixTableMetric metric = new
PhoenixTableMetricImpl(MetricType.SELECT_SQL_COUNTER);
+ metric.change(10);
+ metric.reset();
+ assertEquals(0, metric.getValue());
+ }
+
+ @Test public void testPhoenixImplGetValue() {
+ PhoenixTableMetric metric = new
PhoenixTableMetricImpl(MetricType.SELECT_SQL_COUNTER);
+ metric.change(10);
+ assertEquals(10, metric.getValue());
+ }
+}
