src/main/java/org/apache/accumulo/testing/randomwalk/bulk/ConsistencyCheck.java

/*
 * 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.testing.randomwalk.bulk;

import java.util.Map.Entry;
import java.util.Random;

import org.apache.accumulo.core.client.IsolatedScanner;
import org.apache.accumulo.core.client.Scanner;
import org.apache.accumulo.core.data.Key;
import org.apache.accumulo.core.data.Range;
import org.apache.accumulo.core.data.Value;
import org.apache.accumulo.core.security.Authorizations;
import org.apache.accumulo.testing.randomwalk.RandWalkEnv;
import org.apache.accumulo.testing.randomwalk.State;
import org.apache.hadoop.io.Text;

public class ConsistencyCheck extends SelectiveBulkTest {

  @Override
  protected void runLater(State state, RandWalkEnv env) throws Exception {
    Random rand = (Random) state.get("rand");
    Text row = Merge.getRandomRow(rand);
    log.info("Checking " + row);
    String user = env.getAccumuloClient().whoami();
    Authorizations auths = env.getAccumuloClient().securityOperations().getUserAuthorizations(user);
    try (Scanner scanner = new IsolatedScanner(
        env.getAccumuloClient().createScanner(Setup.getTableName(), auths))) {
      scanner.setRange(new Range(row));
      scanner.fetchColumnFamily(BulkPlusOne.CHECK_COLUMN_FAMILY);
      Value v = null;
      Key first = null;
      for (Entry<Key,Value> entry : scanner) {
        if (v == null) {
          v = entry.getValue();
          first = entry.getKey();
        }
        if (!v.equals(entry.getValue()))
          throw new RuntimeException("Inconsistent value at " + entry.getKey() + " was "
              + entry.getValue() + " should be " + v + " first read at " + first);
      }
    }
  }

}