| /* |
| * 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 org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Map; |
| |
| 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.BatchWriterConfig; |
| import org.apache.accumulo.core.client.IteratorSetting; |
| import org.apache.accumulo.core.client.Scanner; |
| import org.apache.accumulo.core.data.Key; |
| import org.apache.accumulo.core.data.Mutation; |
| import org.apache.accumulo.core.data.PartialKey; |
| import org.apache.accumulo.core.data.Value; |
| import org.apache.accumulo.core.iterators.LongCombiner; |
| import org.apache.accumulo.core.iterators.user.SummingCombiner; |
| import org.apache.accumulo.core.security.Authorizations; |
| import org.apache.accumulo.harness.AccumuloClusterHarness; |
| import org.apache.hadoop.io.Text; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.Iterators; |
| |
| /** |
| * Test writing to another table from inside an iterator. |
| * |
| * @see BatchWriterIterator |
| */ |
| public class BatchWriterInTabletServerIT extends AccumuloClusterHarness { |
| private static final Logger log = LoggerFactory.getLogger(BatchWriterInTabletServerIT.class); |
| |
| @Override |
| public boolean canRunTest(ClusterType type) { |
| return type == ClusterType.MINI; |
| } |
| |
| /** |
| * This test should succeed. |
| */ |
| @Test |
| public void testNormalWrite() throws Exception { |
| String[] uniqueNames = getUniqueNames(2); |
| String t1 = uniqueNames[0], t2 = uniqueNames[1]; |
| try (AccumuloClient c = Accumulo.newClient().from(getClientProps()).build()) { |
| int numEntriesToWritePerEntry = 50; |
| IteratorSetting itset = BatchWriterIterator.iteratorSetting(6, 0, 15, 1000, |
| numEntriesToWritePerEntry, t2, c, getAdminToken(), false, false); |
| test(t1, t2, c, itset, numEntriesToWritePerEntry); |
| } |
| } |
| |
| /** |
| * Fixed by ACCUMULO-4229. |
| * <p> |
| * This tests a situation that a client which shares a LocatorCache with the tablet server may |
| * fall into. Before the problem was fixed, adding a split after the Locator cache falls out of |
| * sync caused the BatchWriter to continuously attempt to write to an old, closed tablet. It would |
| * do so for 15 seconds until a timeout on the BatchWriter. |
| */ |
| @Test |
| public void testClearLocatorAndSplitWrite() throws Exception { |
| String[] uniqueNames = getUniqueNames(2); |
| String t1 = uniqueNames[0], t2 = uniqueNames[1]; |
| try (AccumuloClient c = Accumulo.newClient().from(getClientProps()).build()) { |
| int numEntriesToWritePerEntry = 50; |
| IteratorSetting itset = BatchWriterIterator.iteratorSetting(6, 0, 15, 1000, |
| numEntriesToWritePerEntry, t2, c, getAdminToken(), true, true); |
| test(t1, t2, c, itset, numEntriesToWritePerEntry); |
| } |
| } |
| |
| private void test(String t1, String t2, AccumuloClient c, IteratorSetting itset, |
| int numEntriesToWritePerEntry) throws Exception { |
| // Write an entry to t1 |
| c.tableOperations().create(t1); |
| Key k = new Key(new Text("row"), new Text("cf"), new Text("cq")); |
| Value v = new Value("1"); |
| BatchWriterConfig config = new BatchWriterConfig(); |
| config.setMaxMemory(0); |
| try (BatchWriter writer = c.createBatchWriter(t1, config)) { |
| Mutation m = new Mutation(k.getRow()); |
| m.put(k.getColumnFamily(), k.getColumnQualifier(), v); |
| writer.addMutation(m); |
| } |
| |
| // Create t2 with a combiner to count entries written to it |
| c.tableOperations().create(t2); |
| IteratorSetting summer = new IteratorSetting(2, "summer", SummingCombiner.class); |
| LongCombiner.setEncodingType(summer, LongCombiner.Type.STRING); |
| LongCombiner.setCombineAllColumns(summer, true); |
| c.tableOperations().attachIterator(t2, summer); |
| |
| Map.Entry<Key,Value> actual; |
| try (Scanner scanner = c.createScanner(t1, Authorizations.EMPTY)) { |
| // Scan t1 with an iterator that writes to table t2 |
| scanner.addScanIterator(itset); |
| actual = Iterators.getOnlyElement(scanner.iterator()); |
| assertTrue(actual.getKey().equals(k, PartialKey.ROW_COLFAM_COLQUAL)); |
| assertEquals(BatchWriterIterator.SUCCESS_VALUE, actual.getValue()); |
| } |
| |
| try (Scanner scanner = c.createScanner(t2, Authorizations.EMPTY)) { |
| // ensure entries correctly wrote to table t2 |
| actual = Iterators.getOnlyElement(scanner.iterator()); |
| log.debug("t2 entry is {} -> {}", actual.getKey().toStringNoTime(), actual.getValue()); |
| assertTrue(actual.getKey().equals(k, PartialKey.ROW_COLFAM_COLQUAL)); |
| assertEquals(numEntriesToWritePerEntry, Integer.parseInt(actual.getValue().toString())); |
| } |
| |
| c.tableOperations().delete(t1); |
| c.tableOperations().delete(t2); |
| } |
| } |