adelapena commented on code in PR #2492: URL: https://github.com/apache/cassandra/pull/2492#discussion_r1270568397
########## test/distributed/org/apache/cassandra/distributed/test/sai/IndexStreamingFailureTest.java: ########## @@ -0,0 +1,200 @@ +/* + * 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.distributed.test.sai; + +import java.io.IOException; +import java.util.concurrent.Callable; + +import net.bytebuddy.ByteBuddy; +import net.bytebuddy.dynamic.loading.ClassLoadingStrategy; +import net.bytebuddy.implementation.MethodDelegation; +import net.bytebuddy.implementation.bind.annotation.SuperCall; +import org.junit.AfterClass; +import org.junit.BeforeClass; +import org.junit.Test; + +import org.apache.cassandra.config.DatabaseDescriptor; +import org.apache.cassandra.distributed.Cluster; +import org.apache.cassandra.distributed.api.IInvokableInstance; +import org.apache.cassandra.distributed.api.NodeToolResult; +import org.apache.cassandra.distributed.test.TestBaseImpl; +import org.apache.cassandra.index.sai.IndexContext; +import org.apache.cassandra.index.sai.disk.format.IndexDescriptor; +import org.apache.cassandra.index.sai.disk.v1.SAICodecUtils; +import org.apache.cassandra.index.sai.disk.v1.segment.SegmentBuilder; +import org.apache.cassandra.index.sai.disk.v1.segment.SegmentMetadata; +import org.apache.cassandra.utils.Throwables; +import org.apache.lucene.index.CorruptIndexException; +import org.apache.lucene.store.IndexInput; + +import static net.bytebuddy.matcher.ElementMatchers.named; +import static org.assertj.core.api.Assertions.assertThat; + +import static org.apache.cassandra.distributed.api.Feature.NETWORK; + +public class IndexStreamingFailureTest extends TestBaseImpl +{ + public static final String TEST_ERROR_MESSAGE = "Injected failure!"; + + private static Cluster cluster; + + @BeforeClass + public static void startup() throws IOException + { + cluster = init(Cluster.build(2).withConfig(c -> c.with(NETWORK)) + .withInstanceInitializer(ByteBuddyHelper::installErrors) + .start()); + + cluster.disableAutoCompaction(KEYSPACE); + } + + @AfterClass + public static void shutdown() + { + if (cluster != null) + cluster.close(); + } + + @Test + public void testAvailabilityAfterFailedNonEntireFileStreaming() throws Exception + { + cluster.get(2).runOnInstance(()-> ByteBuddyHelper.failFlush = true); + cluster.get(2).runOnInstance(()-> ByteBuddyHelper.failValidation = false); + testAvailabilityAfterStreaming("non_entire_file_test", false); + } + + @Test + public void testAvailabilityAfterFailedEntireFileStreaming() throws Exception + { + cluster.get(2).runOnInstance(()-> ByteBuddyHelper.failFlush = false); + cluster.get(2).runOnInstance(()-> ByteBuddyHelper.failValidation = true); + testAvailabilityAfterStreaming("entire_file_test", true); + } + + private void testAvailabilityAfterStreaming(String table, boolean streamEntireSSTables) throws Exception + { + + + cluster.schemaChange(String.format("CREATE TABLE %s.%s (pk int PRIMARY KEY, v text)", KEYSPACE, table)); + cluster.schemaChange(String.format("CREATE CUSTOM INDEX ON %s.%s(v) USING 'StorageAttachedIndex'", KEYSPACE, table)); + + IInvokableInstance first = cluster.get(1); + IInvokableInstance second = cluster.get(2); + first.runOnInstance(()-> DatabaseDescriptor.setStreamEntireSSTables(streamEntireSSTables)); + second.runOnInstance(()-> DatabaseDescriptor.setStreamEntireSSTables(streamEntireSSTables)); + + first.executeInternal(String.format("INSERT INTO %s.%s(pk, v) VALUES (?, ?)", KEYSPACE, table), 1, "v1"); + first.flush(KEYSPACE); + + Object[][] rs = second.executeInternal(String.format("select pk from %s.%s where v = ?", KEYSPACE, table), "v1"); + assertThat(rs.length).isEqualTo(0); + + // The repair job should fail when index completion fails. This should also fail the streaming transaction. + NodeToolResult result = second.nodetoolResult("repair", KEYSPACE); + result.asserts().failure().errorContains(TEST_ERROR_MESSAGE); + + // The SSTable should not be added to the table view, as the streaming transaction failed... + rs = second.executeInternal(String.format("select pk from %s.%s where pk = ?", KEYSPACE, table), 1); + assertThat(rs.length).isEqualTo(0); + + // ...and querying the index also returns nothing, as the index for the streamed SSTable was never built. + rs = second.executeInternal(String.format("select pk from %s.%s where v = ?", KEYSPACE, table), "v1"); + assertThat(rs.length).isEqualTo(0); + + // On restart, ensure that the index remains querable and does not include the data we attempted to stream. + second.shutdown().get(); + second.startup(); + + // On restart, the base table should be unchanged... + rs = second.executeInternal(String.format("select pk from %s.%s where pk = ?", KEYSPACE, table), 1); + assertThat(rs.length).isEqualTo(0); + + // ...and the index should remain queryable, because from its perspective, the streaming never happened. + rs = second.executeInternal(String.format("select pk from %s.%s where v = ?", KEYSPACE, table), "v1"); + assertThat(rs.length).isEqualTo(0); + + // Disable failure injection, and verify that the index is queryable and has the newly streamed data: + second.runOnInstance(()-> ByteBuddyHelper.failFlush = false); + second.runOnInstance(()-> ByteBuddyHelper.failValidation = false); + second.nodetoolResult("repair", KEYSPACE).asserts().success(); + + rs = second.executeInternal(String.format("select pk from %s.%s where v = ?", KEYSPACE, table), "v1"); + assertThat(rs.length).isEqualTo(1); + } + + public static class ByteBuddyHelper + { + volatile static boolean failFlush = false; + volatile static boolean failValidation = false; + + @SuppressWarnings("resource") + static void installErrors(ClassLoader loader, int node) + { + if (node == 2) Review Comment: The two `if` blocks can be merged, or we could just have `if (node != 2) return;` at the beginning of the method. -- This is an automated message from the Apache Git Service. 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