| /** |
| * 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.util; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import org.apache.hadoop.metrics2.MetricsSource; |
| import org.apache.hadoop.metrics2.MetricsSystem; |
| import org.apache.hadoop.metrics2.impl.MetricsCollectorImpl; |
| import org.apache.hadoop.metrics2.impl.MetricsRecords; |
| import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem; |
| import org.apache.hadoop.util.DiskChecker.DiskErrorException; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.Assert; |
| |
| import java.io.File; |
| import java.nio.file.Files; |
| import java.nio.file.Paths; |
| |
| /** |
| * The class to test {@link ReadWriteDiskValidator} and |
| * {@link ReadWriteDiskValidatorMetrics}. |
| */ |
| public class TestReadWriteDiskValidator { |
| |
| private MetricsSystem ms; |
| |
| @Before |
| public void setUp() { |
| ms = DefaultMetricsSystem.instance(); |
| } |
| |
| @Test |
| public void testReadWriteDiskValidator() |
| throws DiskErrorException, InterruptedException { |
| int count = 100; |
| File testDir = new File(System.getProperty("test.build.data")); |
| ReadWriteDiskValidator readWriteDiskValidator = |
| (ReadWriteDiskValidator) DiskValidatorFactory.getInstance( |
| ReadWriteDiskValidator.NAME); |
| |
| for (int i = 0; i < count; i++) { |
| readWriteDiskValidator.checkStatus(testDir); |
| } |
| |
| ReadWriteDiskValidatorMetrics metric = |
| ReadWriteDiskValidatorMetrics.getMetric(testDir.toString()); |
| Assert.assertEquals("The count number of estimator in MutableQuantiles" |
| + "metrics of file read is not right", |
| metric.getFileReadQuantiles()[0].getEstimator().getCount(), count); |
| |
| Assert.assertEquals("The count number of estimator in MutableQuantiles" |
| + "metrics of file write is not right", |
| metric.getFileWriteQuantiles()[0].getEstimator().getCount(), |
| count); |
| |
| MetricsSource source = ms.getSource( |
| ReadWriteDiskValidatorMetrics.sourceName(testDir.toString())); |
| MetricsCollectorImpl collector = new MetricsCollectorImpl(); |
| source.getMetrics(collector, true); |
| |
| MetricsRecords.assertMetric(collector.getRecords().get(0), |
| "FailureCount", 0); |
| MetricsRecords.assertMetric(collector.getRecords().get(0), |
| "LastFailureTime", (long)0); |
| |
| // All MutableQuantiles haven't rolled over yet because the minimum |
| // interval is 1 hours, so we just test if these metrics exist. |
| MetricsRecords.assertMetricNotNull(collector.getRecords().get(0), |
| "WriteLatency3600sNumOps"); |
| MetricsRecords.assertMetricNotNull(collector.getRecords().get(0), |
| "WriteLatency3600s50thPercentileLatencyMicros"); |
| MetricsRecords.assertMetricNotNull(collector.getRecords().get(0), |
| "WriteLatency86400sNumOps"); |
| MetricsRecords.assertMetricNotNull(collector.getRecords().get(0), |
| "WriteLatency864000sNumOps"); |
| |
| MetricsRecords.assertMetricNotNull(collector.getRecords().get(0), |
| "ReadLatency3600sNumOps"); |
| MetricsRecords.assertMetricNotNull(collector.getRecords().get(0), |
| "ReadLatency3600s50thPercentileLatencyMicros"); |
| MetricsRecords.assertMetricNotNull(collector.getRecords().get(0), |
| "ReadLatency86400sNumOps"); |
| MetricsRecords.assertMetricNotNull(collector.getRecords().get(0), |
| "ReadLatency864000sNumOps"); |
| } |
| |
| @Test |
| public void testCheckFailures() throws Throwable { |
| ReadWriteDiskValidator readWriteDiskValidator = |
| (ReadWriteDiskValidator) DiskValidatorFactory.getInstance( |
| ReadWriteDiskValidator.NAME); |
| |
| // create a temporary test directory under the system test directory |
| File testDir = Files.createTempDirectory( |
| Paths.get(System.getProperty("test.build.data")), "test").toFile(); |
| |
| try { |
| Shell.execCommand(Shell.getSetPermissionCommand("000", false, |
| testDir.getAbsolutePath())); |
| } catch (Exception e){ |
| testDir.delete(); |
| throw e; |
| } |
| |
| try { |
| readWriteDiskValidator.checkStatus(testDir); |
| fail("Disk check should fail."); |
| } catch (DiskErrorException e) { |
| assertEquals("Disk Check failed!", e.getMessage()); |
| } |
| |
| MetricsSource source = ms.getSource( |
| ReadWriteDiskValidatorMetrics.sourceName(testDir.toString())); |
| MetricsCollectorImpl collector = new MetricsCollectorImpl(); |
| source.getMetrics(collector, true); |
| |
| try { |
| readWriteDiskValidator.checkStatus(testDir); |
| fail("Disk check should fail."); |
| } catch (DiskErrorException e) { |
| assertEquals("Disk Check failed!", e.getMessage()); |
| } |
| |
| source.getMetrics(collector, true); |
| |
| // verify the first metrics record |
| MetricsRecords.assertMetric(collector.getRecords().get(0), |
| "FailureCount", 1); |
| Long lastFailureTime1 = (Long) MetricsRecords.getMetricValueByName( |
| collector.getRecords().get(0), "LastFailureTime"); |
| |
| // verify the second metrics record |
| MetricsRecords.assertMetric(collector.getRecords().get(1), |
| "FailureCount", 2); |
| Long lastFailureTime2 = (Long) MetricsRecords.getMetricValueByName( |
| collector.getRecords().get(1), "LastFailureTime"); |
| assertTrue("The first failure time should be less than the second one", |
| lastFailureTime1 < lastFailureTime2); |
| |
| testDir.delete(); |
| } |
| } |