| /** |
| * 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.ozone.container.ozoneimpl; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.metrics2.MetricsSystem; |
| import org.apache.hadoop.metrics2.annotation.Metric; |
| import org.apache.hadoop.metrics2.annotation.Metrics; |
| import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem; |
| import org.apache.hadoop.metrics2.lib.MutableCounterInt; |
| import org.apache.hadoop.metrics2.lib.MutableGaugeInt; |
| import org.apache.hadoop.metrics2.lib.MutableRate; |
| |
| import java.util.concurrent.ThreadLocalRandom; |
| |
| /** |
| * This class captures the container data scrubber metrics on the data-node. |
| **/ |
| @InterfaceAudience.Private |
| @Metrics(about="DataNode container data scrubber metrics", context="dfs") |
| public final class ContainerDataScrubberMetrics { |
| private final String name; |
| private final MetricsSystem ms; |
| @Metric("number of containers scanned in the current iteration") |
| private MutableGaugeInt numContainersScanned; |
| @Metric("number of unhealthy containers found in the current iteration") |
| private MutableGaugeInt numUnHealthyContainers; |
| @Metric("number of iterations of scanner completed since the restart") |
| private MutableCounterInt numScanIterations; |
| @Metric("disk bandwidth used by the container data scrubber per volume") |
| private MutableRate numBytesScanned; |
| |
| public int getNumContainersScanned() { |
| return numContainersScanned.value(); |
| } |
| |
| public void incNumContainersScanned() { |
| numContainersScanned.incr(); |
| } |
| |
| public void resetNumContainersScanned() { |
| numContainersScanned.decr(getNumContainersScanned()); |
| } |
| |
| public int getNumUnHealthyContainers() { |
| return numUnHealthyContainers.value(); |
| } |
| |
| public void incNumUnHealthyContainers() { |
| numUnHealthyContainers.incr(); |
| } |
| |
| public void resetNumUnhealthyContainers() { |
| numUnHealthyContainers.decr(getNumUnHealthyContainers()); |
| } |
| |
| public int getNumScanIterations() { |
| return numScanIterations.value(); |
| } |
| |
| public void incNumScanIterations() { |
| numScanIterations.incr(); |
| } |
| |
| public double getNumBytesScannedMean() { |
| return numBytesScanned.lastStat().mean(); |
| } |
| |
| public long getNumBytesScannedSampleCount() { |
| return numBytesScanned.lastStat().numSamples(); |
| } |
| |
| public double getNumBytesScannedStdDev() { |
| return numBytesScanned.lastStat().stddev(); |
| } |
| |
| public void incNumBytesScanned(long bytes) { |
| numBytesScanned.add(bytes); |
| } |
| |
| public void unregister() { |
| ms.unregisterSource(name); |
| } |
| |
| private ContainerDataScrubberMetrics(String name, MetricsSystem ms) { |
| this.name = name; |
| this.ms = ms; |
| } |
| |
| public static ContainerDataScrubberMetrics create(final String volumeName) { |
| MetricsSystem ms = DefaultMetricsSystem.instance(); |
| String name = "ContainerDataScrubberMetrics-"+ (volumeName.isEmpty() |
| ? "UndefinedDataNodeVolume"+ ThreadLocalRandom.current().nextInt() |
| : volumeName.replace(':', '-')); |
| |
| return ms.register(name, null, new ContainerDataScrubberMetrics(name, ms)); |
| } |
| } |