org.apache.hadoop.hbase.client.TestAsyncSingleRequestRpcRetryingCaller.java Source code

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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.hamcrest.CoreMatchers.instanceOf;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.IOException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;

import org.apache.commons.io.IOUtils;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HRegionLocation;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.security.User;
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.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;

@Category({ MediumTests.class, ClientTests.class })
public class TestAsyncSingleRequestRpcRetryingCaller {

    private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();

    private static TableName TABLE_NAME = TableName.valueOf("async");

    private static byte[] FAMILY = Bytes.toBytes("cf");

    private static byte[] QUALIFIER = Bytes.toBytes("cq");

    private static byte[] ROW = Bytes.toBytes("row");

    private static byte[] VALUE = Bytes.toBytes("value");

    private static AsyncConnectionImpl CONN;

    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
        TEST_UTIL.startMiniCluster(2);
        TEST_UTIL.getAdmin().setBalancerRunning(false, true);
        TEST_UTIL.createTable(TABLE_NAME, FAMILY);
        TEST_UTIL.waitTableAvailable(TABLE_NAME);
        AsyncRegistry registry = AsyncRegistryFactory.getRegistry(TEST_UTIL.getConfiguration());
        CONN = new AsyncConnectionImpl(TEST_UTIL.getConfiguration(), registry, registry.getClusterId().get(),
                User.getCurrent());
    }

    @AfterClass
    public static void tearDownAfterClass() throws Exception {
        IOUtils.closeQuietly(CONN);
        TEST_UTIL.shutdownMiniCluster();
    }

    @Test
    public void testRegionMove() throws InterruptedException, ExecutionException, IOException {
        // This will leave a cached entry in location cache
        HRegionLocation loc = CONN.getRegionLocator(TABLE_NAME).getRegionLocation(ROW).get();
        int index = TEST_UTIL.getHBaseCluster().getServerWith(loc.getRegionInfo().getRegionName());
        TEST_UTIL.getAdmin().move(loc.getRegionInfo().getEncodedNameAsBytes(), Bytes
                .toBytes(TEST_UTIL.getHBaseCluster().getRegionServer(1 - index).getServerName().getServerName()));
        RawAsyncTable table = CONN.getRawTableBuilder(TABLE_NAME).setRetryPause(100, TimeUnit.MILLISECONDS)
                .setMaxRetries(30).build();
        table.put(new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE)).get();

        // move back
        TEST_UTIL.getAdmin().move(loc.getRegionInfo().getEncodedNameAsBytes(),
                Bytes.toBytes(loc.getServerName().getServerName()));
        Result result = table.get(new Get(ROW).addColumn(FAMILY, QUALIFIER)).get();
        assertArrayEquals(VALUE, result.getValue(FAMILY, QUALIFIER));
    }

    private <T> CompletableFuture<T> failedFuture() {
        CompletableFuture<T> future = new CompletableFuture<>();
        future.completeExceptionally(new RuntimeException("Inject error!"));
        return future;
    }

    @Test
    public void testMaxRetries() throws IOException, InterruptedException {
        try {
            CONN.callerFactory.single().table(TABLE_NAME).row(ROW).operationTimeout(1, TimeUnit.DAYS).maxAttempts(3)
                    .pause(10, TimeUnit.MILLISECONDS).action((controller, loc, stub) -> failedFuture()).call()
                    .get();
            fail();
        } catch (ExecutionException e) {
            assertThat(e.getCause(), instanceOf(RetriesExhaustedException.class));
        }
    }

    @Test
    public void testOperationTimeout() throws IOException, InterruptedException {
        long startNs = System.nanoTime();
        try {
            CONN.callerFactory.single().table(TABLE_NAME).row(ROW).operationTimeout(1, TimeUnit.SECONDS)
                    .pause(100, TimeUnit.MILLISECONDS).maxAttempts(Integer.MAX_VALUE)
                    .action((controller, loc, stub) -> failedFuture()).call().get();
            fail();
        } catch (ExecutionException e) {
            e.printStackTrace();
            assertThat(e.getCause(), instanceOf(RetriesExhaustedException.class));
        }
        long costNs = System.nanoTime() - startNs;
        assertTrue(costNs >= TimeUnit.SECONDS.toNanos(1));
        assertTrue(costNs < TimeUnit.SECONDS.toNanos(2));
    }

    @Test
    public void testLocateError() throws IOException, InterruptedException, ExecutionException {
        AtomicBoolean errorTriggered = new AtomicBoolean(false);
        AtomicInteger count = new AtomicInteger(0);
        HRegionLocation loc = CONN.getRegionLocator(TABLE_NAME).getRegionLocation(ROW).get();
        AsyncRegionLocator mockedLocator = new AsyncRegionLocator(CONN, AsyncConnectionImpl.RETRY_TIMER) {
            @Override
            CompletableFuture<HRegionLocation> getRegionLocation(TableName tableName, byte[] row,
                    RegionLocateType locateType, long timeoutNs) {
                if (tableName.equals(TABLE_NAME)) {
                    CompletableFuture<HRegionLocation> future = new CompletableFuture<>();
                    if (count.getAndIncrement() == 0) {
                        errorTriggered.set(true);
                        future.completeExceptionally(new RuntimeException("Inject error!"));
                    } else {
                        future.complete(loc);
                    }
                    return future;
                } else {
                    return super.getRegionLocation(tableName, row, locateType, timeoutNs);
                }
            }

            @Override
            void updateCachedLocation(HRegionLocation loc, Throwable exception) {
            }
        };
        try (AsyncConnectionImpl mockedConn = new AsyncConnectionImpl(CONN.getConfiguration(), CONN.registry,
                CONN.registry.getClusterId().get(), User.getCurrent()) {

            @Override
            AsyncRegionLocator getLocator() {
                return mockedLocator;
            }
        }) {
            RawAsyncTable table = mockedConn.getRawTableBuilder(TABLE_NAME)
                    .setRetryPause(100, TimeUnit.MILLISECONDS).setMaxRetries(5).build();
            table.put(new Put(ROW).addColumn(FAMILY, QUALIFIER, VALUE)).get();
            assertTrue(errorTriggered.get());
            errorTriggered.set(false);
            count.set(0);
            Result result = table.get(new Get(ROW).addColumn(FAMILY, QUALIFIER)).get();
            assertArrayEquals(VALUE, result.getValue(FAMILY, QUALIFIER));
            assertTrue(errorTriggered.get());
        }
    }
}