| /* |
| * 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.cassandra.db.commitlog; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Random; |
| |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.config.CFMetaData; |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.cql3.CQLTester; |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.db.RowUpdateBuilder; |
| import org.apache.cassandra.db.commitlog.CommitLogSegment.CDCState; |
| import org.apache.cassandra.exceptions.WriteTimeoutException; |
| import org.apache.cassandra.io.util.FileUtils; |
| |
| public class CommitLogSegmentManagerCDCTest extends CQLTester |
| { |
| private static Random random = new Random(); |
| |
| @BeforeClass |
| public static void setUpClass() |
| { |
| DatabaseDescriptor.setCDCEnabled(true); |
| CQLTester.setUpClass(); |
| } |
| |
| @Before |
| public void before() throws IOException |
| { |
| CommitLog.instance.resetUnsafe(true); |
| for (File f : new File(DatabaseDescriptor.getCDCLogLocation()).listFiles()) |
| FileUtils.deleteWithConfirm(f); |
| } |
| |
| @Test |
| public void testCDCWriteTimeout() throws Throwable |
| { |
| createTable("CREATE TABLE %s (idx int, data text, primary key(idx)) WITH cdc=true;"); |
| CommitLogSegmentManagerCDC cdcMgr = (CommitLogSegmentManagerCDC)CommitLog.instance.segmentManager; |
| CFMetaData cfm = currentTableMetadata(); |
| |
| // Confirm that logic to check for whether or not we can allocate new CDC segments works |
| Integer originalCDCSize = DatabaseDescriptor.getCDCSpaceInMB(); |
| try |
| { |
| DatabaseDescriptor.setCDCSpaceInMB(32); |
| // Spin until we hit CDC capacity and make sure we get a WriteTimeout |
| try |
| { |
| // Should trigger on anything < 20:1 compression ratio during compressed test |
| for (int i = 0; i < 100; i++) |
| { |
| new RowUpdateBuilder(cfm, 0, i) |
| .add("data", randomizeBuffer(DatabaseDescriptor.getCommitLogSegmentSize() / 3)) |
| .build().apply(); |
| } |
| Assert.fail("Expected WriteTimeoutException from full CDC but did not receive it."); |
| } |
| catch (WriteTimeoutException e) |
| { |
| // expected, do nothing |
| } |
| expectCurrentCDCState(CDCState.FORBIDDEN); |
| |
| // Confirm we can create a non-cdc table and write to it even while at cdc capacity |
| createTable("CREATE TABLE %s (idx int, data text, primary key(idx)) WITH cdc=false;"); |
| execute("INSERT INTO %s (idx, data) VALUES (1, '1');"); |
| |
| // Confirm that, on flush+recyle, we see files show up in cdc_raw |
| Keyspace.open(keyspace()).getColumnFamilyStore(currentTable()).forceBlockingFlush(); |
| CommitLog.instance.forceRecycleAllSegments(); |
| cdcMgr.awaitManagementTasksCompletion(); |
| Assert.assertTrue("Expected files to be moved to overflow.", getCDCRawCount() > 0); |
| |
| // Simulate a CDC consumer reading files then deleting them |
| for (File f : new File(DatabaseDescriptor.getCDCLogLocation()).listFiles()) |
| FileUtils.deleteWithConfirm(f); |
| |
| // Update size tracker to reflect deleted files. Should flip flag on current allocatingFrom to allow. |
| cdcMgr.updateCDCTotalSize(); |
| expectCurrentCDCState(CDCState.PERMITTED); |
| } |
| finally |
| { |
| DatabaseDescriptor.setCDCSpaceInMB(originalCDCSize); |
| } |
| } |
| |
| @Test |
| public void testCLSMCDCDiscardLogic() throws Throwable |
| { |
| CommitLogSegmentManagerCDC cdcMgr = (CommitLogSegmentManagerCDC)CommitLog.instance.segmentManager; |
| |
| createTable("CREATE TABLE %s (idx int, data text, primary key(idx)) WITH cdc=false;"); |
| for (int i = 0; i < 8; i++) |
| { |
| new RowUpdateBuilder(currentTableMetadata(), 0, i) |
| .add("data", randomizeBuffer(DatabaseDescriptor.getCommitLogSegmentSize() / 4)) // fit 3 in a segment |
| .build().apply(); |
| } |
| |
| // Should have 4 segments CDC since we haven't flushed yet, 3 PERMITTED, one of which is active, and 1 PERMITTED, in waiting |
| Assert.assertEquals(4 * DatabaseDescriptor.getCommitLogSegmentSize(), cdcMgr.updateCDCTotalSize()); |
| expectCurrentCDCState(CDCState.PERMITTED); |
| CommitLog.instance.forceRecycleAllSegments(); |
| |
| // on flush, these PERMITTED should be deleted |
| Assert.assertEquals(0, new File(DatabaseDescriptor.getCDCLogLocation()).listFiles().length); |
| |
| createTable("CREATE TABLE %s (idx int, data text, primary key(idx)) WITH cdc=true;"); |
| for (int i = 0; i < 8; i++) |
| { |
| new RowUpdateBuilder(currentTableMetadata(), 0, i) |
| .add("data", randomizeBuffer(DatabaseDescriptor.getCommitLogSegmentSize() / 4)) |
| .build().apply(); |
| } |
| // 4 total again, 3 CONTAINS, 1 in waiting PERMITTED |
| Assert.assertEquals(4 * DatabaseDescriptor.getCommitLogSegmentSize(), cdcMgr.updateCDCTotalSize()); |
| CommitLog.instance.forceRecycleAllSegments(); |
| expectCurrentCDCState(CDCState.PERMITTED); |
| |
| // On flush, PERMITTED is deleted, CONTAINS is preserved. |
| cdcMgr.awaitManagementTasksCompletion(); |
| int seen = getCDCRawCount(); |
| Assert.assertTrue("Expected >3 files in cdc_raw, saw: " + seen, seen >= 3); |
| } |
| |
| @Test |
| public void testSegmentFlaggingOnCreation() throws Throwable |
| { |
| CommitLogSegmentManagerCDC cdcMgr = (CommitLogSegmentManagerCDC)CommitLog.instance.segmentManager; |
| String ct = createTable("CREATE TABLE %s (idx int, data text, primary key(idx)) WITH cdc=true;"); |
| |
| int origSize = DatabaseDescriptor.getCDCSpaceInMB(); |
| try |
| { |
| DatabaseDescriptor.setCDCSpaceInMB(16); |
| CFMetaData ccfm = Keyspace.open(keyspace()).getColumnFamilyStore(ct).metadata; |
| // Spin until we hit CDC capacity and make sure we get a WriteTimeout |
| try |
| { |
| for (int i = 0; i < 1000; i++) |
| { |
| new RowUpdateBuilder(ccfm, 0, i) |
| .add("data", randomizeBuffer(DatabaseDescriptor.getCommitLogSegmentSize() / 3)) |
| .build().apply(); |
| } |
| Assert.fail("Expected WriteTimeoutException from full CDC but did not receive it."); |
| } |
| catch (WriteTimeoutException e) { } |
| |
| expectCurrentCDCState(CDCState.FORBIDDEN); |
| CommitLog.instance.forceRecycleAllSegments(); |
| |
| cdcMgr.awaitManagementTasksCompletion(); |
| new File(DatabaseDescriptor.getCDCLogLocation()).listFiles()[0].delete(); |
| cdcMgr.updateCDCTotalSize(); |
| // Confirm cdc update process changes flag on active segment |
| expectCurrentCDCState(CDCState.PERMITTED); |
| |
| // Clear out archived CDC files |
| for (File f : new File(DatabaseDescriptor.getCDCLogLocation()).listFiles()) { |
| FileUtils.deleteWithConfirm(f); |
| } |
| |
| // Set space to 0, confirm newly allocated segments are FORBIDDEN |
| DatabaseDescriptor.setCDCSpaceInMB(0); |
| CommitLog.instance.forceRecycleAllSegments(); |
| CommitLog.instance.segmentManager.awaitManagementTasksCompletion(); |
| expectCurrentCDCState(CDCState.FORBIDDEN); |
| } |
| finally |
| { |
| DatabaseDescriptor.setCDCSpaceInMB(origSize); |
| } |
| } |
| |
| private ByteBuffer randomizeBuffer(int size) |
| { |
| byte[] toWrap = new byte[size]; |
| random.nextBytes(toWrap); |
| return ByteBuffer.wrap(toWrap); |
| } |
| |
| private int getCDCRawCount() |
| { |
| return new File(DatabaseDescriptor.getCDCLogLocation()).listFiles().length; |
| } |
| |
| private void expectCurrentCDCState(CDCState state) |
| { |
| Assert.assertEquals("Received unexpected CDCState on current allocatingFrom segment.", |
| state, CommitLog.instance.segmentManager.allocatingFrom().getCDCState()); |
| } |
| } |