test/src/main/java/org/apache/accumulo/test/BalanceIT.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.test;

import java.util.SortedSet;
import java.util.TreeSet;

import org.apache.accumulo.core.client.Accumulo;
import org.apache.accumulo.core.client.AccumuloClient;
import org.apache.accumulo.harness.AccumuloClusterHarness;
import org.apache.hadoop.io.Text;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

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

  @Override
  public int defaultTimeoutSeconds() {
    return 60;
  }

  @Test
  public void testBalance() throws Exception {
    String tableName = getUniqueNames(1)[0];
    try (AccumuloClient c = Accumulo.newClient().from(getClientProps()).build()) {
      log.info("Creating table");
      c.tableOperations().create(tableName);
      SortedSet<Text> splits = new TreeSet<>();
      for (int i = 0; i < 10; i++) {
        splits.add(new Text("" + i));
      }
      log.info("Adding splits");
      c.tableOperations().addSplits(tableName, splits);
      log.info("Waiting for balance");
      c.instanceOperations().waitForBalance();
    }
  }
}