test/src/main/java/org/apache/accumulo/test/MissingWalHeaderCompletesRecoveryIT.java - accumulo - Git at Google

 /*
  * 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.accumulo.test;

 import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;

 import java.io.File;
 import java.util.UUID;

 import org.apache.accumulo.core.client.Accumulo;
 import org.apache.accumulo.core.client.AccumuloClient;
 import org.apache.accumulo.core.client.BatchWriter;
 import org.apache.accumulo.core.client.Scanner;
 import org.apache.accumulo.core.conf.Property;
 import org.apache.accumulo.core.data.Mutation;
 import org.apache.accumulo.core.data.TableId;
 import org.apache.accumulo.core.dataImpl.KeyExtent;
 import org.apache.accumulo.core.metadata.MetadataTable;
 import org.apache.accumulo.core.metadata.schema.MetadataSchema.TabletsSection;
 import org.apache.accumulo.core.security.Authorizations;
 import org.apache.accumulo.core.security.TablePermission;
 import org.apache.accumulo.core.tabletserver.log.LogEntry;
 import org.apache.accumulo.miniclusterImpl.MiniAccumuloClusterImpl;
 import org.apache.accumulo.miniclusterImpl.MiniAccumuloConfigImpl;
 import org.apache.accumulo.server.ServerConstants;
 import org.apache.accumulo.test.functional.ConfigurableMacBase;
 import org.apache.accumulo.tserver.log.DfsLogger;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FSDataOutputStream;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.RawLocalFileSystem;
 import org.apache.hadoop.io.Text;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 import com.google.common.collect.Iterables;

 public class MissingWalHeaderCompletesRecoveryIT extends ConfigurableMacBase {
   private static final Logger log =
       LoggerFactory.getLogger(MissingWalHeaderCompletesRecoveryIT.class);

   private boolean rootHasWritePermission;

   @Override
   protected int defaultTimeoutSeconds() {
     return 2 * 60;
   }

   @Override
   public void configure(MiniAccumuloConfigImpl cfg, Configuration conf) {
     cfg.setNumTservers(1);
     cfg.setProperty(Property.MANAGER_RECOVERY_DELAY, "1s");
     // Make sure the GC doesn't delete the file before the metadata reference is added
     cfg.setProperty(Property.GC_CYCLE_START, "999999s");
     conf.set("fs.file.impl", RawLocalFileSystem.class.getName());
   }

   @Before
   public void setupMetadataPermission() throws Exception {
     try (AccumuloClient client = Accumulo.newClient().from(getClientProperties()).build()) {
       rootHasWritePermission = client.securityOperations().hasTablePermission("root",
           MetadataTable.NAME, TablePermission.WRITE);
       if (!rootHasWritePermission) {
         client.securityOperations().grantTablePermission("root", MetadataTable.NAME,
             TablePermission.WRITE);
         // Make sure it propagates through ZK
         Thread.sleep(5000);
       }
     }
   }

   @After
   public void resetMetadataPermission() throws Exception {
     try (AccumuloClient client = Accumulo.newClient().from(getClientProperties()).build()) {
       // Final state doesn't match the original
       if (rootHasWritePermission != client.securityOperations().hasTablePermission("root",
           MetadataTable.NAME, TablePermission.WRITE)) {
         if (rootHasWritePermission) {
           // root had write permission when starting, ensure root still does
           client.securityOperations().grantTablePermission("root", MetadataTable.NAME,
               TablePermission.WRITE);
         } else {
           // root did not have write permission when starting, ensure that it does not
           client.securityOperations().revokeTablePermission("root", MetadataTable.NAME,
               TablePermission.WRITE);
         }
       }
     }
   }

   @Test
   public void testEmptyWalRecoveryCompletes() throws Exception {
     try (AccumuloClient client = Accumulo.newClient().from(getClientProperties()).build()) {
       MiniAccumuloClusterImpl cluster = getCluster();
       FileSystem fs = cluster.getFileSystem();

       // Fake out something that looks like host:port, it's irrelevant
       String fakeServer = "127.0.0.1:12345";

       File walogs = new File(cluster.getConfig().getAccumuloDir(), ServerConstants.WAL_DIR);
       File walogServerDir = new File(walogs, fakeServer.replace(':', '+'));
       File emptyWalog = new File(walogServerDir, UUID.randomUUID().toString());

       log.info("Created empty WAL at {}", emptyWalog.toURI());

       fs.create(new Path(emptyWalog.toURI())).close();

       assertTrue("root user did not have write permission to metadata table",
           client.securityOperations().hasTablePermission("root", MetadataTable.NAME,
               TablePermission.WRITE));

       String tableName = getUniqueNames(1)[0];
       client.tableOperations().create(tableName);

       TableId tableId = TableId.of(client.tableOperations().tableIdMap().get(tableName));
       assertNotNull("Table ID was null", tableId);

       LogEntry logEntry =
           new LogEntry(new KeyExtent(tableId, null, null), 0, emptyWalog.toURI().toString());

       log.info("Taking {} offline", tableName);
       client.tableOperations().offline(tableName, true);

       log.info("{} is offline", tableName);

       Text row = TabletsSection.encodeRow(tableId, null);
       Mutation m = new Mutation(row);
       m.put(logEntry.getColumnFamily(), logEntry.getColumnQualifier(), logEntry.getValue());

       try (BatchWriter bw = client.createBatchWriter(MetadataTable.NAME)) {
         bw.addMutation(m);
       }

       log.info("Bringing {} online", tableName);
       client.tableOperations().online(tableName, true);

       log.info("{} is online", tableName);

       // Reading the table implies that recovery completed successfully (the empty file was ignored)
       // otherwise the tablet will never come online and we won't be able to read it.
       try (Scanner s = client.createScanner(tableName, Authorizations.EMPTY)) {
         assertEquals(0, Iterables.size(s));
       }
     }
   }

   @Test
   public void testPartialHeaderWalRecoveryCompletes() throws Exception {
     try (AccumuloClient client = Accumulo.newClient().from(getClientProperties()).build()) {
       MiniAccumuloClusterImpl cluster = getCluster();
       FileSystem fs = getCluster().getFileSystem();

       // Fake out something that looks like host:port, it's irrelevant
       String fakeServer = "127.0.0.1:12345";

       File walogs = new File(cluster.getConfig().getAccumuloDir(), ServerConstants.WAL_DIR);
       File walogServerDir = new File(walogs, fakeServer.replace(':', '+'));
       File partialHeaderWalog = new File(walogServerDir, UUID.randomUUID().toString());

       log.info("Created WAL with malformed header at {}", partialHeaderWalog.toURI());

       // Write half of the header
       FSDataOutputStream wal = fs.create(new Path(partialHeaderWalog.toURI()));
       wal.write(DfsLogger.LOG_FILE_HEADER_V4.getBytes(UTF_8), 0,
           DfsLogger.LOG_FILE_HEADER_V4.length() / 2);
       wal.close();

       assertTrue("root user did not have write permission to metadata table",
           client.securityOperations().hasTablePermission("root", MetadataTable.NAME,
               TablePermission.WRITE));

       String tableName = getUniqueNames(1)[0];
       client.tableOperations().create(tableName);

       TableId tableId = TableId.of(client.tableOperations().tableIdMap().get(tableName));
       assertNotNull("Table ID was null", tableId);

       LogEntry logEntry = new LogEntry(null, 0, partialHeaderWalog.toURI().toString());

       log.info("Taking {} offline", tableName);
       client.tableOperations().offline(tableName, true);

       log.info("{} is offline", tableName);

       Text row = TabletsSection.encodeRow(tableId, null);
       Mutation m = new Mutation(row);
       m.put(logEntry.getColumnFamily(), logEntry.getColumnQualifier(), logEntry.getValue());

       try (BatchWriter bw = client.createBatchWriter(MetadataTable.NAME)) {
         bw.addMutation(m);
       }

       log.info("Bringing {} online", tableName);
       client.tableOperations().online(tableName, true);

       log.info("{} is online", tableName);

       // Reading the table implies that recovery completed successfully (the empty file was ignored)
       // otherwise the tablet will never come online and we won't be able to read it.
       try (Scanner s = client.createScanner(tableName, Authorizations.EMPTY)) {
         assertEquals(0, Iterables.size(s));
       }
     }
   }

 }
	/*
	* 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.accumulo.test;

	import static java.nio.charset.StandardCharsets.UTF_8;
	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertNotNull;
	import static org.junit.Assert.assertTrue;

	import java.io.File;
	import java.util.UUID;

	import org.apache.accumulo.core.client.Accumulo;
	import org.apache.accumulo.core.client.AccumuloClient;
	import org.apache.accumulo.core.client.BatchWriter;
	import org.apache.accumulo.core.client.Scanner;
	import org.apache.accumulo.core.conf.Property;
	import org.apache.accumulo.core.data.Mutation;
	import org.apache.accumulo.core.data.TableId;
	import org.apache.accumulo.core.dataImpl.KeyExtent;
	import org.apache.accumulo.core.metadata.MetadataTable;
	import org.apache.accumulo.core.metadata.schema.MetadataSchema.TabletsSection;
	import org.apache.accumulo.core.security.Authorizations;
	import org.apache.accumulo.core.security.TablePermission;
	import org.apache.accumulo.core.tabletserver.log.LogEntry;
	import org.apache.accumulo.miniclusterImpl.MiniAccumuloClusterImpl;
	import org.apache.accumulo.miniclusterImpl.MiniAccumuloConfigImpl;
	import org.apache.accumulo.server.ServerConstants;
	import org.apache.accumulo.test.functional.ConfigurableMacBase;
	import org.apache.accumulo.tserver.log.DfsLogger;
	import org.apache.hadoop.conf.Configuration;
	import org.apache.hadoop.fs.FSDataOutputStream;
	import org.apache.hadoop.fs.FileSystem;
	import org.apache.hadoop.fs.Path;
	import org.apache.hadoop.fs.RawLocalFileSystem;
	import org.apache.hadoop.io.Text;
	import org.junit.After;
	import org.junit.Before;
	import org.junit.Test;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;

	import com.google.common.collect.Iterables;

	public class MissingWalHeaderCompletesRecoveryIT extends ConfigurableMacBase {
	private static final Logger log =
	LoggerFactory.getLogger(MissingWalHeaderCompletesRecoveryIT.class);

	private boolean rootHasWritePermission;

	@Override
	protected int defaultTimeoutSeconds() {
	return 2 * 60;
	}

	@Override
	public void configure(MiniAccumuloConfigImpl cfg, Configuration conf) {
	cfg.setNumTservers(1);
	cfg.setProperty(Property.MANAGER_RECOVERY_DELAY, "1s");
	// Make sure the GC doesn't delete the file before the metadata reference is added
	cfg.setProperty(Property.GC_CYCLE_START, "999999s");
	conf.set("fs.file.impl", RawLocalFileSystem.class.getName());
	}

	@Before
	public void setupMetadataPermission() throws Exception {
	try (AccumuloClient client = Accumulo.newClient().from(getClientProperties()).build()) {
	rootHasWritePermission = client.securityOperations().hasTablePermission("root",
	MetadataTable.NAME, TablePermission.WRITE);
	if (!rootHasWritePermission) {
	client.securityOperations().grantTablePermission("root", MetadataTable.NAME,
	TablePermission.WRITE);
	// Make sure it propagates through ZK
	Thread.sleep(5000);
	}
	}
	}

	@After
	public void resetMetadataPermission() throws Exception {
	try (AccumuloClient client = Accumulo.newClient().from(getClientProperties()).build()) {
	// Final state doesn't match the original
	if (rootHasWritePermission != client.securityOperations().hasTablePermission("root",
	MetadataTable.NAME, TablePermission.WRITE)) {
	if (rootHasWritePermission) {
	// root had write permission when starting, ensure root still does
	client.securityOperations().grantTablePermission("root", MetadataTable.NAME,
	TablePermission.WRITE);
	} else {
	// root did not have write permission when starting, ensure that it does not
	client.securityOperations().revokeTablePermission("root", MetadataTable.NAME,
	TablePermission.WRITE);
	}
	}
	}
	}

	@Test
	public void testEmptyWalRecoveryCompletes() throws Exception {
	try (AccumuloClient client = Accumulo.newClient().from(getClientProperties()).build()) {
	MiniAccumuloClusterImpl cluster = getCluster();
	FileSystem fs = cluster.getFileSystem();

	// Fake out something that looks like host:port, it's irrelevant
	String fakeServer = "127.0.0.1:12345";

	File walogs = new File(cluster.getConfig().getAccumuloDir(), ServerConstants.WAL_DIR);
	File walogServerDir = new File(walogs, fakeServer.replace(':', '+'));
	File emptyWalog = new File(walogServerDir, UUID.randomUUID().toString());

	log.info("Created empty WAL at {}", emptyWalog.toURI());

	fs.create(new Path(emptyWalog.toURI())).close();

	assertTrue("root user did not have write permission to metadata table",
	client.securityOperations().hasTablePermission("root", MetadataTable.NAME,
	TablePermission.WRITE));

	String tableName = getUniqueNames(1)[0];
	client.tableOperations().create(tableName);

	TableId tableId = TableId.of(client.tableOperations().tableIdMap().get(tableName));
	assertNotNull("Table ID was null", tableId);

	LogEntry logEntry =
	new LogEntry(new KeyExtent(tableId, null, null), 0, emptyWalog.toURI().toString());

	log.info("Taking {} offline", tableName);
	client.tableOperations().offline(tableName, true);

	log.info("{} is offline", tableName);

	Text row = TabletsSection.encodeRow(tableId, null);
	Mutation m = new Mutation(row);
	m.put(logEntry.getColumnFamily(), logEntry.getColumnQualifier(), logEntry.getValue());

	try (BatchWriter bw = client.createBatchWriter(MetadataTable.NAME)) {
	bw.addMutation(m);
	}

	log.info("Bringing {} online", tableName);
	client.tableOperations().online(tableName, true);

	log.info("{} is online", tableName);

	// Reading the table implies that recovery completed successfully (the empty file was ignored)
	// otherwise the tablet will never come online and we won't be able to read it.
	try (Scanner s = client.createScanner(tableName, Authorizations.EMPTY)) {
	assertEquals(0, Iterables.size(s));
	}
	}
	}

	@Test
	public void testPartialHeaderWalRecoveryCompletes() throws Exception {
	try (AccumuloClient client = Accumulo.newClient().from(getClientProperties()).build()) {
	MiniAccumuloClusterImpl cluster = getCluster();
	FileSystem fs = getCluster().getFileSystem();

	// Fake out something that looks like host:port, it's irrelevant
	String fakeServer = "127.0.0.1:12345";

	File walogs = new File(cluster.getConfig().getAccumuloDir(), ServerConstants.WAL_DIR);
	File walogServerDir = new File(walogs, fakeServer.replace(':', '+'));
	File partialHeaderWalog = new File(walogServerDir, UUID.randomUUID().toString());

	log.info("Created WAL with malformed header at {}", partialHeaderWalog.toURI());

	// Write half of the header
	FSDataOutputStream wal = fs.create(new Path(partialHeaderWalog.toURI()));
	wal.write(DfsLogger.LOG_FILE_HEADER_V4.getBytes(UTF_8), 0,
	DfsLogger.LOG_FILE_HEADER_V4.length() / 2);
	wal.close();

	assertTrue("root user did not have write permission to metadata table",
	client.securityOperations().hasTablePermission("root", MetadataTable.NAME,
	TablePermission.WRITE));

	String tableName = getUniqueNames(1)[0];
	client.tableOperations().create(tableName);

	TableId tableId = TableId.of(client.tableOperations().tableIdMap().get(tableName));
	assertNotNull("Table ID was null", tableId);

	LogEntry logEntry = new LogEntry(null, 0, partialHeaderWalog.toURI().toString());

	log.info("Taking {} offline", tableName);
	client.tableOperations().offline(tableName, true);

	log.info("{} is offline", tableName);

	Text row = TabletsSection.encodeRow(tableId, null);
	Mutation m = new Mutation(row);
	m.put(logEntry.getColumnFamily(), logEntry.getColumnQualifier(), logEntry.getValue());

	try (BatchWriter bw = client.createBatchWriter(MetadataTable.NAME)) {
	bw.addMutation(m);
	}

	log.info("Bringing {} online", tableName);
	client.tableOperations().online(tableName, true);

	log.info("{} is online", tableName);

	// Reading the table implies that recovery completed successfully (the empty file was ignored)
	// otherwise the tablet will never come online and we won't be able to read it.
	try (Scanner s = client.createScanner(tableName, Authorizations.EMPTY)) {
	assertEquals(0, Iterables.size(s));
	}
	}
	}

	}