/**
* 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.hadoop.hbase.chaos.actions;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import java.io.IOException;
import java.util.concurrent.ThreadLocalRandom;
public class SplitAllRegionOfTableAction extends Action {
private static final int DEFAULT_MAX_SPLITS = 3;
private static final String MAX_SPLIT_KEY = "hbase.chaosmonkey.action.maxFullTableSplits";
private final TableName tableName;
private int maxFullTableSplits = DEFAULT_MAX_SPLITS;
private int splits = 0;
public SplitAllRegionOfTableAction(TableName tableName) {
this.tableName = tableName;
}
public void init(ActionContext context) throws IOException {
super.init(context);
this.maxFullTableSplits = getConf().getInt(MAX_SPLIT_KEY, DEFAULT_MAX_SPLITS);
}
@Override
public void perform() throws Exception {
HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
Admin admin = util.getAdmin();
// Don't try the split if we're stopping
if (context.isStopping()) {
return;
}
// Don't always split. This should allow splitting of a full table later in the run
if (ThreadLocalRandom.current().nextDouble()
< (((double) splits) / ((double) maxFullTableSplits)) / ((double) 2)) {
splits++;
LOG.info("Performing action: Split all regions of " + tableName);
admin.split(tableName);
} else {
LOG.info("Skipping split of all regions.");
}
}
}