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/*
* 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.client;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import java.io.IOException;
import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.testclassification.ClientTests;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TestName;
@Category({ MediumTests.class, ClientTests.class })
public class TestMvccConsistentScanner {
@ClassRule
public static final HBaseClassTestRule CLASS_RULE =
HBaseClassTestRule.forClass(TestMvccConsistentScanner.class);
private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
private static Connection CONN;
private static final byte[] CF = Bytes.toBytes("cf");
private static final byte[] CQ1 = Bytes.toBytes("cq1");
private static final byte[] CQ2 = Bytes.toBytes("cq2");
private static final byte[] CQ3 = Bytes.toBytes("cq3");
@Rule
public TestName testName = new TestName();
private TableName tableName;
@BeforeClass
public static void setUpBeforeClass() throws Exception {
UTIL.startMiniCluster(2);
CONN = ConnectionFactory.createConnection(UTIL.getConfiguration());
}
@AfterClass
public static void tearDownAfterClass() throws Exception {
CONN.close();
UTIL.shutdownMiniCluster();
}
@Before
public void setUp() throws IOException, InterruptedException {
tableName = TableName.valueOf(testName.getMethodName().replaceAll("[^0-9a-zA-Z]", "_"));
UTIL.createTable(tableName, CF);
UTIL.waitTableAvailable(tableName);
}
private void put(byte[] row, byte[] cq, byte[] value) throws IOException {
try (Table table = CONN.getTable(tableName)) {
table.put(new Put(row).addColumn(CF, cq, value));
}
}
private void move() throws IOException, InterruptedException {
RegionInfo region =
UTIL.getHBaseCluster().getRegions(tableName).stream().findAny().get().getRegionInfo();
HRegionServer rs =
UTIL.getHBaseCluster().getRegionServerThreads().stream().map(t -> t.getRegionServer())
.filter(r -> !r.getOnlineTables().contains(tableName)).findAny().get();
UTIL.getAdmin().move(region.getEncodedNameAsBytes(), rs.getServerName());
while (UTIL.getRSForFirstRegionInTable(tableName) != rs) {
Thread.sleep(100);
}
}
@Test
public void testRowAtomic() throws IOException, InterruptedException {
byte[] row = Bytes.toBytes("row");
put(row, CQ1, Bytes.toBytes(1));
put(row, CQ2, Bytes.toBytes(2));
try (Table table = CONN.getTable(tableName);
ResultScanner scanner = table.getScanner(new Scan().setBatch(1).setCaching(1))) {
Result result = scanner.next();
assertEquals(1, result.rawCells().length);
assertEquals(1, Bytes.toInt(result.getValue(CF, CQ1)));
move();
put(row, CQ3, Bytes.toBytes(3));
result = scanner.next();
assertEquals(1, result.rawCells().length);
assertEquals(2, Bytes.toInt(result.getValue(CF, CQ2)));
assertNull(scanner.next());
}
}
@Test
public void testCrossRowAtomicInRegion() throws IOException, InterruptedException {
put(Bytes.toBytes("row1"), CQ1, Bytes.toBytes(1));
put(Bytes.toBytes("row2"), CQ1, Bytes.toBytes(2));
try (Table table = CONN.getTable(tableName);
ResultScanner scanner = table.getScanner(new Scan().setCaching(1))) {
Result result = scanner.next();
assertArrayEquals(Bytes.toBytes("row1"), result.getRow());
assertEquals(1, Bytes.toInt(result.getValue(CF, CQ1)));
move();
put(Bytes.toBytes("row3"), CQ1, Bytes.toBytes(3));
result = scanner.next();
assertArrayEquals(Bytes.toBytes("row2"), result.getRow());
assertEquals(2, Bytes.toInt(result.getValue(CF, CQ1)));
assertNull(scanner.next());
}
}
}