| /** |
| * 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.hdfs.qjournal.client; |
| |
| import static org.junit.Assert.*; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel; |
| import org.apache.hadoop.hdfs.qjournal.client.LoggerTooFarBehindException; |
| import org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocol; |
| import org.apache.hadoop.hdfs.qjournal.protocol.RequestInfo; |
| import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.apache.hadoop.test.GenericTestUtils.DelayAnswer; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.mockito.Mockito; |
| |
| import com.google.common.base.Supplier; |
| |
| public class TestIPCLoggerChannel { |
| private static final Log LOG = LogFactory.getLog( |
| TestIPCLoggerChannel.class); |
| |
| private Configuration conf = new Configuration(); |
| private static final NamespaceInfo FAKE_NSINFO = new NamespaceInfo( |
| 12345, "mycluster", "my-bp", 0L); |
| private static final String JID = "test-journalid"; |
| private static final InetSocketAddress FAKE_ADDR = |
| new InetSocketAddress(0); |
| private static final byte[] FAKE_DATA = new byte[4096]; |
| |
| private QJournalProtocol mockProxy = Mockito.mock(QJournalProtocol.class); |
| private IPCLoggerChannel ch; |
| |
| private static final int LIMIT_QUEUE_SIZE_MB = 1; |
| private static final int LIMIT_QUEUE_SIZE_BYTES = |
| LIMIT_QUEUE_SIZE_MB * 1024 * 1024; |
| |
| @Before |
| public void setupMock() { |
| conf.setInt(DFSConfigKeys.DFS_QJOURNAL_QUEUE_SIZE_LIMIT_KEY, |
| LIMIT_QUEUE_SIZE_MB); |
| |
| // Channel to the mock object instead of a real IPC proxy. |
| ch = new IPCLoggerChannel(conf, FAKE_NSINFO, JID, FAKE_ADDR) { |
| @Override |
| protected QJournalProtocol getProxy() throws IOException { |
| return mockProxy; |
| } |
| }; |
| |
| ch.setEpoch(1); |
| } |
| |
| @Test |
| public void testSimpleCall() throws Exception { |
| ch.sendEdits(1, 1, 3, FAKE_DATA).get(); |
| Mockito.verify(mockProxy).journal(Mockito.<RequestInfo>any(), |
| Mockito.eq(1L), Mockito.eq(1L), |
| Mockito.eq(3), Mockito.same(FAKE_DATA)); |
| } |
| |
| |
| /** |
| * Test that, once the queue eclipses the configure size limit, |
| * calls to journal more data are rejected. |
| */ |
| @Test |
| public void testQueueLimiting() throws Exception { |
| |
| // Block the underlying fake proxy from actually completing any calls. |
| DelayAnswer delayer = new DelayAnswer(LOG); |
| Mockito.doAnswer(delayer).when(mockProxy).journal( |
| Mockito.<RequestInfo>any(), |
| Mockito.eq(1L), Mockito.eq(1L), |
| Mockito.eq(1), Mockito.same(FAKE_DATA)); |
| |
| // Queue up the maximum number of calls. |
| int numToQueue = LIMIT_QUEUE_SIZE_BYTES / FAKE_DATA.length; |
| for (int i = 1; i <= numToQueue; i++) { |
| ch.sendEdits(1L, (long)i, 1, FAKE_DATA); |
| } |
| |
| // The accounting should show the correct total number queued. |
| assertEquals(LIMIT_QUEUE_SIZE_BYTES, ch.getQueuedEditsSize()); |
| |
| // Trying to queue any more should fail. |
| try { |
| ch.sendEdits(1L, numToQueue + 1, 1, FAKE_DATA).get(1, TimeUnit.SECONDS); |
| fail("Did not fail to queue more calls after queue was full"); |
| } catch (ExecutionException ee) { |
| if (!(ee.getCause() instanceof LoggerTooFarBehindException)) { |
| throw ee; |
| } |
| } |
| |
| delayer.proceed(); |
| |
| // After we allow it to proceeed, it should chug through the original queue |
| GenericTestUtils.waitFor(new Supplier<Boolean>() { |
| @Override |
| public Boolean get() { |
| return ch.getQueuedEditsSize() == 0; |
| } |
| }, 10, 1000); |
| } |
| |
| /** |
| * Test that, if the remote node gets unsynchronized (eg some edits were |
| * missed or the node rebooted), the client stops sending edits until |
| * the next roll. Test for HDFS-3726. |
| */ |
| @Test |
| public void testStopSendingEditsWhenOutOfSync() throws Exception { |
| Mockito.doThrow(new IOException("injected error")) |
| .when(mockProxy).journal( |
| Mockito.<RequestInfo>any(), |
| Mockito.eq(1L), Mockito.eq(1L), |
| Mockito.eq(1), Mockito.same(FAKE_DATA)); |
| |
| try { |
| ch.sendEdits(1L, 1L, 1, FAKE_DATA).get(); |
| fail("Injected JOOSE did not cause sendEdits() to throw"); |
| } catch (ExecutionException ee) { |
| GenericTestUtils.assertExceptionContains("injected", ee); |
| } |
| Mockito.verify(mockProxy).journal( |
| Mockito.<RequestInfo>any(), |
| Mockito.eq(1L), Mockito.eq(1L), |
| Mockito.eq(1), Mockito.same(FAKE_DATA)); |
| |
| assertTrue(ch.isOutOfSync()); |
| |
| try { |
| ch.sendEdits(1L, 2L, 1, FAKE_DATA).get(); |
| fail("sendEdits() should throw until next roll"); |
| } catch (ExecutionException ee) { |
| GenericTestUtils.assertExceptionContains("disabled until next roll", |
| ee.getCause()); |
| } |
| |
| // It should have failed without even sending the edits, since it was not sync. |
| Mockito.verify(mockProxy, Mockito.never()).journal( |
| Mockito.<RequestInfo>any(), |
| Mockito.eq(1L), Mockito.eq(2L), |
| Mockito.eq(1), Mockito.same(FAKE_DATA)); |
| // It should have sent a heartbeat instead. |
| Mockito.verify(mockProxy).heartbeat( |
| Mockito.<RequestInfo>any()); |
| |
| // After a roll, sending new edits should not fail. |
| ch.startLogSegment(3L).get(); |
| assertFalse(ch.isOutOfSync()); |
| |
| ch.sendEdits(3L, 3L, 1, FAKE_DATA).get(); |
| } |
| } |