org.apache.hadoop.hbase.index.write.TestParalleIndexWriter.java Source code

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/*
 * Copyright 2014 The Apache Software Foundation
 *
 * 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.index.write;

import static org.junit.Assert.assertTrue;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.Stoppable;
import org.apache.hadoop.hbase.client.HTableInterface;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Rule;
import org.junit.Test;
import org.mockito.Mockito;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;

import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Multimap;
import org.apache.hadoop.hbase.index.StubAbortable;
import org.apache.hadoop.hbase.index.TableName;
import org.apache.hadoop.hbase.index.table.HTableInterfaceReference;
import org.apache.hadoop.hbase.index.util.ImmutableBytesPtr;

public class TestParalleIndexWriter {

    private static final Log LOG = LogFactory.getLog(TestParalleIndexWriter.class);
    @Rule
    public TableName test = new TableName();
    private final byte[] row = Bytes.toBytes("row");

    @Test
    public void testCorrectlyCleansUpResources() throws Exception {
        ExecutorService exec = Executors.newFixedThreadPool(1);
        FakeTableFactory factory = new FakeTableFactory(Collections.<ImmutableBytesPtr, HTableInterface>emptyMap());
        ParallelWriterIndexCommitter writer = new ParallelWriterIndexCommitter();
        Abortable mockAbort = Mockito.mock(Abortable.class);
        Stoppable mockStop = Mockito.mock(Stoppable.class);
        // create a simple writer
        writer.setup(factory, exec, mockAbort, mockStop, 1);
        // stop the writer
        writer.stop(this.test.getTableNameString() + " finished");
        assertTrue("Factory didn't get shutdown after writer#stop!", factory.shutdown);
        assertTrue("ExectorService isn't terminated after writer#stop!", exec.isShutdown());
        Mockito.verifyZeroInteractions(mockAbort, mockStop);
    }

    @SuppressWarnings("unchecked")
    @Test
    public void testSynchronouslyCompletesAllWrites() throws Exception {
        LOG.info("Starting " + test.getTableNameString());
        LOG.info("Current thread is interrupted: " + Thread.interrupted());
        Abortable abort = new StubAbortable();
        Stoppable stop = Mockito.mock(Stoppable.class);
        ExecutorService exec = Executors.newFixedThreadPool(1);
        Map<ImmutableBytesPtr, HTableInterface> tables = new HashMap<ImmutableBytesPtr, HTableInterface>();
        FakeTableFactory factory = new FakeTableFactory(tables);

        ImmutableBytesPtr tableName = new ImmutableBytesPtr(this.test.getTableName());
        Put m = new Put(row);
        m.add(Bytes.toBytes("family"), Bytes.toBytes("qual"), null);
        Multimap<HTableInterfaceReference, Mutation> indexUpdates = ArrayListMultimap
                .<HTableInterfaceReference, Mutation>create();
        indexUpdates.put(new HTableInterfaceReference(tableName), m);

        HTableInterface table = Mockito.mock(HTableInterface.class);
        final boolean[] completed = new boolean[] { false };
        Mockito.when(table.batch(Mockito.anyList())).thenAnswer(new Answer<Void>() {

            @Override
            public Void answer(InvocationOnMock invocation) throws Throwable {
                // just keep track that it was called
                completed[0] = true;
                return null;
            }
        });
        Mockito.when(table.getTableName()).thenReturn(test.getTableName());
        // add the table to the set of tables, so its returned to the writer
        tables.put(tableName, table);

        // setup the writer and failure policy
        ParallelWriterIndexCommitter writer = new ParallelWriterIndexCommitter();
        writer.setup(factory, exec, abort, stop, 1);
        writer.write(indexUpdates);
        assertTrue("Writer returned before the table batch completed! Likely a race condition tripped",
                completed[0]);
        writer.stop(this.test.getTableNameString() + " finished");
        assertTrue("Factory didn't get shutdown after writer#stop!", factory.shutdown);
        assertTrue("ExectorService isn't terminated after writer#stop!", exec.isShutdown());
    }
}