/**
* 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.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.TableDescriptors;
import org.apache.hadoop.hbase.TableExistsException;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Tests for {@link FSTableDescriptors}.
*/
// Do not support to be executed in he same JVM as other tests
@Category(MediumTests.class)
public class TestFSTableDescriptors {
private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
private static final Log LOG = LogFactory.getLog(TestFSTableDescriptors.class);
@Test (expected=IllegalArgumentException.class)
public void testRegexAgainstOldStyleTableInfo() {
Path p = new Path("/tmp", FSTableDescriptors.TABLEINFO_FILE_PREFIX);
int i = FSTableDescriptors.getTableInfoSequenceId(p);
assertEquals(0, i);
// Assert it won't eat garbage -- that it fails
p = new Path("/tmp", "abc");
FSTableDescriptors.getTableInfoSequenceId(p);
}
@Test
public void testCreateAndUpdate() throws IOException {
Path testdir = UTIL.getDataTestDir("testCreateAndUpdate");
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf("testCreate"));
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
FSTableDescriptors fstd = new FSTableDescriptors(UTIL.getConfiguration(), fs, testdir);
assertTrue(fstd.createTableDescriptor(htd));
assertFalse(fstd.createTableDescriptor(htd));
FileStatus[] statuses = fs.listStatus(testdir);
assertTrue("statuses.length=" + statuses.length, statuses.length == 1);
for (int i = 0; i < 10; i++) {
fstd.updateTableDescriptor(htd);
}
statuses = fs.listStatus(testdir);
assertTrue(statuses.length == 1);
Path tmpTableDir = new Path(FSUtils.getTableDir(testdir, htd.getTableName()), ".tmp");
statuses = fs.listStatus(tmpTableDir);
assertTrue(statuses.length == 0);
}
@Test
public void testSequenceIdAdvancesOnTableInfo() throws IOException {
Path testdir = UTIL.getDataTestDir("testSequenceidAdvancesOnTableInfo");
HTableDescriptor htd = new HTableDescriptor(
TableName.valueOf("testSequenceidAdvancesOnTableInfo"));
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
FSTableDescriptors fstd = new FSTableDescriptors(UTIL.getConfiguration(), fs, testdir);
Path p0 = fstd.updateTableDescriptor(htd);
int i0 = FSTableDescriptors.getTableInfoSequenceId(p0);
Path p1 = fstd.updateTableDescriptor(htd);
// Assert we cleaned up the old file.
assertTrue(!fs.exists(p0));
int i1 = FSTableDescriptors.getTableInfoSequenceId(p1);
assertTrue(i1 == i0 + 1);
Path p2 = fstd.updateTableDescriptor(htd);
// Assert we cleaned up the old file.
assertTrue(!fs.exists(p1));
int i2 = FSTableDescriptors.getTableInfoSequenceId(p2);
assertTrue(i2 == i1 + 1);
}
@Test
public void testFormatTableInfoSequenceId() {
Path p0 = assertWriteAndReadSequenceId(0);
// Assert p0 has format we expect.
StringBuilder sb = new StringBuilder();
for (int i = 0; i < FSTableDescriptors.WIDTH_OF_SEQUENCE_ID; i++) {
sb.append("0");
}
assertEquals(FSTableDescriptors.TABLEINFO_FILE_PREFIX + "." + sb.toString(), p0.getName());
// Check a few more.
Path p2 = assertWriteAndReadSequenceId(2);
Path p10000 = assertWriteAndReadSequenceId(10000);
// Get a .tablinfo that has no sequenceid suffix.
Path p = new Path(p0.getParent(), FSTableDescriptors.TABLEINFO_FILE_PREFIX);
FileStatus fs = new FileStatus(0, false, 0, 0, 0, p);
FileStatus fs0 = new FileStatus(0, false, 0, 0, 0, p0);
FileStatus fs2 = new FileStatus(0, false, 0, 0, 0, p2);
FileStatus fs10000 = new FileStatus(0, false, 0, 0, 0, p10000);
Comparator<FileStatus> comparator = FSTableDescriptors.TABLEINFO_FILESTATUS_COMPARATOR;
assertTrue(comparator.compare(fs, fs0) > 0);
assertTrue(comparator.compare(fs0, fs2) > 0);
assertTrue(comparator.compare(fs2, fs10000) > 0);
}
private Path assertWriteAndReadSequenceId(final int i) {
Path p = new Path("/tmp", FSTableDescriptors.getTableInfoFileName(i));
int ii = FSTableDescriptors.getTableInfoSequenceId(p);
assertEquals(i, ii);
return p;
}
@Test
public void testRemoves() throws IOException {
final String name = "testRemoves";
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
// Cleanup old tests if any detrius laying around.
Path rootdir = new Path(UTIL.getDataTestDir(), name);
TableDescriptors htds = new FSTableDescriptors(UTIL.getConfiguration(), fs, rootdir);
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(name));
htds.add(htd);
assertNotNull(htds.remove(htd.getTableName()));
assertNull(htds.remove(htd.getTableName()));
}
@Test
public void testReadingHTDFromFS()
throws IOException {
final String name = "testReadingHTDFromFS";
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(name));
Path rootdir = UTIL.getDataTestDir(name);
FSTableDescriptors fstd = new FSTableDescriptors(UTIL.getConfiguration(), fs, rootdir);
fstd.createTableDescriptor(htd);
HTableDescriptor htd2 =
FSTableDescriptors.getTableDescriptorFromFs(fs, rootdir, htd.getTableName());
assertTrue(htd.equals(htd2));
}
@Test
public void testHTableDescriptors()
throws IOException, InterruptedException {
final String name = "testHTableDescriptors";
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
// Cleanup old tests if any debris laying around.
Path rootdir = new Path(UTIL.getDataTestDir(), name);
FSTableDescriptors htds = new FSTableDescriptorsTest(fs, rootdir);
final int count = 10;
// Write out table infos.
for (int i = 0; i < count; i++) {
HTableDescriptor htd = new HTableDescriptor(name + i);
htds.createTableDescriptor(htd);
}
for (int i = 0; i < count; i++) {
assertTrue(htds.get(TableName.valueOf(name + i)) != null);
}
for (int i = 0; i < count; i++) {
assertTrue(htds.get(TableName.valueOf(name + i)) != null);
}
// Update the table infos
for (int i = 0; i < count; i++) {
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(name + i));
htd.addFamily(new HColumnDescriptor("" + i));
htds.updateTableDescriptor(htd);
}
// Wait a while so mod time we write is for sure different.
Thread.sleep(100);
for (int i = 0; i < count; i++) {
assertTrue(htds.get(TableName.valueOf(name + i)) != null);
}
for (int i = 0; i < count; i++) {
assertTrue(htds.get(TableName.valueOf(name + i)) != null);
}
assertEquals(count * 4, htds.invocations);
assertTrue("expected=" + (count * 2) + ", actual=" + htds.cachehits,
htds.cachehits >= (count * 2));
}
@Test
public void testHTableDescriptorsNoCache()
throws IOException, InterruptedException {
final String name = "testHTableDescriptorsNoCache";
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
// Cleanup old tests if any debris laying around.
Path rootdir = new Path(UTIL.getDataTestDir(), name);
FSTableDescriptors htds = new FSTableDescriptors(UTIL.getConfiguration(), fs, rootdir,
false, false);
final int count = 10;
// Write out table infos.
for (int i = 0; i < count; i++) {
HTableDescriptor htd = new HTableDescriptor(name + i);
htds.createTableDescriptor(htd);
}
for (int i = 0; i < count; i++) {
assertTrue(htds.get(TableName.valueOf(name + i)) != null);
}
for (int i = 0; i < count; i++) {
assertTrue(htds.get(TableName.valueOf(name + i)) != null);
}
// Update the table infos
for (int i = 0; i < count; i++) {
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(name + i));
htd.addFamily(new HColumnDescriptor("" + i));
htds.updateTableDescriptor(htd);
}
// Wait a while so mod time we write is for sure different.
Thread.sleep(100);
for (int i = 0; i < count; i++) {
assertTrue(htds.get(TableName.valueOf(name + i)) != null);
}
for (int i = 0; i < count; i++) {
assertTrue(htds.get(TableName.valueOf(name + i)) != null);
}
assertEquals(count * 4, htds.invocations);
assertTrue("expected=0, actual=" + htds.cachehits, htds.cachehits == 0);
}
@Test
public void testGetAll()
throws IOException, InterruptedException {
final String name = "testGetAll";
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
// Cleanup old tests if any debris laying around.
Path rootdir = new Path(UTIL.getDataTestDir(), name);
FSTableDescriptors htds = new FSTableDescriptorsTest(fs, rootdir);
final int count = 4;
// Write out table infos.
for (int i = 0; i < count; i++) {
HTableDescriptor htd = new HTableDescriptor(name + i);
htds.createTableDescriptor(htd);
}
// add hbase:meta
HTableDescriptor htd = new HTableDescriptor(HTableDescriptor.META_TABLEDESC.getTableName());
htds.createTableDescriptor(htd);
assertTrue(htds.getAll().size() == count + 1);
}
@Test
public void testCacheConsistency()
throws IOException, InterruptedException {
final String name = "testCacheConsistency";
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
// Cleanup old tests if any debris laying around.
Path rootdir = new Path(UTIL.getDataTestDir(), name);
FSTableDescriptors chtds = new FSTableDescriptorsTest(fs, rootdir);
FSTableDescriptors nonchtds = new FSTableDescriptorsTest(fs,
rootdir, false, false);
final int count = 10;
// Write out table infos via non-cached FSTableDescriptors
for (int i = 0; i < count; i++) {
HTableDescriptor htd = new HTableDescriptor(name + i);
nonchtds.createTableDescriptor(htd);
}
// Calls to getAll() won't increase the cache counter, do per table.
for (int i = 0; i < count; i++) {
assertTrue(chtds.get(TableName.valueOf(name + i)) != null);
}
assertTrue(nonchtds.getAll().size() == chtds.getAll().size());
// add a new entry for hbase:meta
HTableDescriptor htd = new HTableDescriptor(HTableDescriptor.META_TABLEDESC.getTableName());
nonchtds.createTableDescriptor(htd);
// hbase:meta will only increase the cachehit by 1
assertTrue(nonchtds.getAll().size() == chtds.getAll().size());
for (Map.Entry entry : nonchtds.getAll().entrySet()) {
String t = (String) entry.getKey();
HTableDescriptor nchtd = (HTableDescriptor) entry.getValue();
assertTrue("expected " + htd.toString() +
" got: " +
chtds.get(TableName.valueOf(t)).toString(), (nchtd.equals(chtds.get(TableName.valueOf(t)))));
}
}
@Test
public void testNoSuchTable() throws IOException {
final String name = "testNoSuchTable";
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
// Cleanup old tests if any detrius laying around.
Path rootdir = new Path(UTIL.getDataTestDir(), name);
TableDescriptors htds = new FSTableDescriptors(UTIL.getConfiguration(), fs, rootdir);
assertNull("There shouldn't be any HTD for this table", htds.get(TableName.valueOf("NoSuchTable")));
}
@Test
public void testUpdates() throws IOException {
final String name = "testUpdates";
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
// Cleanup old tests if any detrius laying around.
Path rootdir = new Path(UTIL.getDataTestDir(), name);
TableDescriptors htds = new FSTableDescriptors(UTIL.getConfiguration(), fs, rootdir);
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(name));
htds.add(htd);
htds.add(htd);
htds.add(htd);
}
@Test
public void testTableInfoFileStatusComparator() {
FileStatus bare = new FileStatus(
0, false, 0, 0, -1,
new Path("/tmp", FSTableDescriptors.TABLEINFO_FILE_PREFIX));
FileStatus future = new FileStatus(
0, false, 0, 0, -1,
new Path("/tmp/tablinfo." + System.currentTimeMillis()));
FileStatus farFuture = new FileStatus(
0, false, 0, 0, -1,
new Path("/tmp/tablinfo." + System.currentTimeMillis() + 1000));
FileStatus[] alist = {bare, future, farFuture};
FileStatus[] blist = {bare, farFuture, future};
FileStatus[] clist = {farFuture, bare, future};
Comparator<FileStatus> c = FSTableDescriptors.TABLEINFO_FILESTATUS_COMPARATOR;
Arrays.sort(alist, c);
Arrays.sort(blist, c);
Arrays.sort(clist, c);
// Now assert all sorted same in way we want.
for (int i = 0; i < alist.length; i++) {
assertTrue(alist[i].equals(blist[i]));
assertTrue(blist[i].equals(clist[i]));
assertTrue(clist[i].equals(i == 0 ? farFuture : i == 1 ? future : bare));
}
}
@Test
public void testReadingInvalidDirectoryFromFS() throws IOException {
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
try {
// .tmp dir is an invalid table name
new FSTableDescriptors(UTIL.getConfiguration(), fs,
FSUtils.getRootDir(UTIL.getConfiguration()))
.get(TableName.valueOf(HConstants.HBASE_TEMP_DIRECTORY));
fail("Shouldn't be able to read a table descriptor for the archive directory.");
} catch (Exception e) {
LOG.debug("Correctly got error when reading a table descriptor from the archive directory: "
+ e.getMessage());
}
}
@Test
public void testCreateTableDescriptorUpdatesIfExistsAlready() throws IOException {
Path testdir = UTIL.getDataTestDir("testCreateTableDescriptorUpdatesIfThereExistsAlready");
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(
"testCreateTableDescriptorUpdatesIfThereExistsAlready"));
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
FSTableDescriptors fstd = new FSTableDescriptors(UTIL.getConfiguration(), fs, testdir);
assertTrue(fstd.createTableDescriptor(htd));
assertFalse(fstd.createTableDescriptor(htd));
htd.setValue(Bytes.toBytes("mykey"), Bytes.toBytes("myValue"));
assertTrue(fstd.createTableDescriptor(htd)); //this will re-create
Path tableDir = fstd.getTableDir(htd.getTableName());
Path tmpTableDir = new Path(tableDir, FSTableDescriptors.TMP_DIR);
FileStatus[] statuses = fs.listStatus(tmpTableDir);
assertTrue(statuses.length == 0);
assertEquals(htd, FSTableDescriptors.getTableDescriptorFromFs(fs, tableDir));
}
private static class FSTableDescriptorsTest
extends FSTableDescriptors {
public FSTableDescriptorsTest(FileSystem fs, Path rootdir)
throws IOException {
this(fs, rootdir, false, true);
}
public FSTableDescriptorsTest(FileSystem fs, Path rootdir, boolean fsreadonly, boolean usecache)
throws IOException {
super(UTIL.getConfiguration(), fs, rootdir, fsreadonly, usecache);
}
@Override
public HTableDescriptor get(TableName tablename)
throws TableExistsException, FileNotFoundException, IOException {
LOG.info((super.isUsecache() ? "Cached" : "Non-Cached") +
" HTableDescriptor.get() on " + tablename + ", cachehits=" + this.cachehits);
return super.get(tablename);
}
}
}