/*
*
* 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.regionserver;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.net.URI;
import java.util.Collection;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.apache.hadoop.hbase.util.FSUtils;
import org.apache.hadoop.util.Progressable;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(SmallTests.class)
public class TestHRegionFileSystem {
private static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private static final Log LOG = LogFactory.getLog(TestHRegionFileSystem.class);
@Test
public void testOnDiskRegionCreation() throws IOException {
Path rootDir = TEST_UTIL.getDataTestDirOnTestFS("testOnDiskRegionCreation");
FileSystem fs = TEST_UTIL.getTestFileSystem();
Configuration conf = TEST_UTIL.getConfiguration();
// Create a Region
HRegionInfo hri = new HRegionInfo(TableName.valueOf("TestTable"));
HRegionFileSystem regionFs = HRegionFileSystem.createRegionOnFileSystem(conf, fs,
FSUtils.getTableDir(rootDir, hri.getTable()), hri);
// Verify if the region is on disk
Path regionDir = regionFs.getRegionDir();
assertTrue("The region folder should be created", fs.exists(regionDir));
// Verify the .regioninfo
HRegionInfo hriVerify = HRegionFileSystem.loadRegionInfoFileContent(fs, regionDir);
assertEquals(hri, hriVerify);
// Open the region
regionFs = HRegionFileSystem.openRegionFromFileSystem(conf, fs,
FSUtils.getTableDir(rootDir, hri.getTable()), hri, false);
assertEquals(regionDir, regionFs.getRegionDir());
// Delete the region
HRegionFileSystem.deleteRegionFromFileSystem(conf, fs,
FSUtils.getTableDir(rootDir, hri.getTable()), hri);
assertFalse("The region folder should be removed", fs.exists(regionDir));
fs.delete(rootDir, true);
}
@Test
public void testNonIdempotentOpsWithRetries() throws IOException {
Path rootDir = TEST_UTIL.getDataTestDirOnTestFS("testOnDiskRegionCreation");
FileSystem fs = TEST_UTIL.getTestFileSystem();
Configuration conf = TEST_UTIL.getConfiguration();
// Create a Region
HRegionInfo hri = new HRegionInfo(TableName.valueOf("TestTable"));
HRegionFileSystem regionFs = HRegionFileSystem.createRegionOnFileSystem(conf, fs, rootDir, hri);
assertTrue(fs.exists(regionFs.getRegionDir()));
regionFs = new HRegionFileSystem(conf, new MockFileSystemForCreate(),
null, null);
// HRegionFileSystem.createRegionOnFileSystem(conf, new MockFileSystemForCreate(), rootDir,
// hri);
boolean result = regionFs.createDir(new Path("/foo/bar"));
assertTrue("Couldn't create the directory", result);
regionFs = new HRegionFileSystem(conf, new MockFileSystem(), null, null);
result = regionFs.rename(new Path("/foo/bar"), new Path("/foo/bar2"));
assertTrue("Couldn't rename the directory", result);
regionFs = new HRegionFileSystem(conf, new MockFileSystem(), null, null);
result = regionFs.deleteDir(new Path("/foo/bar"));
assertTrue("Couldn't delete the directory", result);
fs.delete(rootDir, true);
}
static class MockFileSystemForCreate extends MockFileSystem {
@Override
public boolean exists(Path path) {
return false;
}
}
/**
* a mock fs which throws exception for first 3 times, and then process the call (returns the
* excepted result).
*/
static class MockFileSystem extends FileSystem {
int retryCount;
final static int successRetryCount = 3;
public MockFileSystem() {
retryCount = 0;
}
@Override
public FSDataOutputStream append(Path arg0, int arg1, Progressable arg2) throws IOException {
throw new IOException("");
}
@Override
public FSDataOutputStream create(Path arg0, FsPermission arg1, boolean arg2, int arg3,
short arg4, long arg5, Progressable arg6) throws IOException {
LOG.debug("Create, " + retryCount);
if (retryCount++ < successRetryCount) throw new IOException("Something bad happen");
return null;
}
@Override
public boolean delete(Path arg0) throws IOException {
if (retryCount++ < successRetryCount) throw new IOException("Something bad happen");
return true;
}
@Override
public boolean delete(Path arg0, boolean arg1) throws IOException {
if (retryCount++ < successRetryCount) throw new IOException("Something bad happen");
return true;
}
@Override
public FileStatus getFileStatus(Path arg0) throws IOException {
FileStatus fs = new FileStatus();
return fs;
}
@Override
public boolean exists(Path path) {
return true;
}
@Override
public URI getUri() {
throw new RuntimeException("Something bad happen");
}
@Override
public Path getWorkingDirectory() {
throw new RuntimeException("Something bad happen");
}
@Override
public FileStatus[] listStatus(Path arg0) throws IOException {
throw new IOException("Something bad happen");
}
@Override
public boolean mkdirs(Path arg0, FsPermission arg1) throws IOException {
LOG.debug("mkdirs, " + retryCount);
if (retryCount++ < successRetryCount) throw new IOException("Something bad happen");
return true;
}
@Override
public FSDataInputStream open(Path arg0, int arg1) throws IOException {
throw new IOException("Something bad happen");
}
@Override
public boolean rename(Path arg0, Path arg1) throws IOException {
LOG.debug("rename, " + retryCount);
if (retryCount++ < successRetryCount) throw new IOException("Something bad happen");
return true;
}
@Override
public void setWorkingDirectory(Path arg0) {
throw new RuntimeException("Something bad happen");
}
}
@Test
public void testTempAndCommit() throws IOException {
Path rootDir = TEST_UTIL.getDataTestDirOnTestFS("testTempAndCommit");
FileSystem fs = TEST_UTIL.getTestFileSystem();
Configuration conf = TEST_UTIL.getConfiguration();
// Create a Region
String familyName = "cf";
HRegionInfo hri = new HRegionInfo(TableName.valueOf("TestTable"));
HRegionFileSystem regionFs = HRegionFileSystem.createRegionOnFileSystem(conf, fs, rootDir, hri);
// New region, no store files
Collection<StoreFileInfo> storeFiles = regionFs.getStoreFiles(familyName);
assertEquals(0, storeFiles != null ? storeFiles.size() : 0);
// Create a new file in temp (no files in the family)
Path buildPath = regionFs.createTempName();
fs.createNewFile(buildPath);
storeFiles = regionFs.getStoreFiles(familyName);
assertEquals(0, storeFiles != null ? storeFiles.size() : 0);
// commit the file
Path dstPath = regionFs.commitStoreFile(familyName, buildPath);
storeFiles = regionFs.getStoreFiles(familyName);
assertEquals(0, storeFiles != null ? storeFiles.size() : 0);
assertFalse(fs.exists(buildPath));
fs.delete(rootDir, true);
}
}