package org.apache.blur.manager.stats;
/**
* 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.
*/
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.apache.blur.thrift.generated.BlurException;
import org.apache.blur.thrift.generated.TableStats;
import org.apache.blur.utils.BlurExecutorCompletionService;
import org.apache.blur.utils.ForkJoin.Merger;
public class MergerTableStats implements Merger<TableStats> {
private long _timeout;
public MergerTableStats(long timeout) {
_timeout = timeout;
}
@Override
public TableStats merge(BlurExecutorCompletionService<TableStats> service) throws BlurException {
TableStats result = new TableStats();
while (service.getRemainingCount() > 0) {
Future<TableStats> tableStats = service.poll(_timeout, TimeUnit.MILLISECONDS, true);
TableStats stats = service.getResultThrowException(tableStats);
result = merge(result, stats);
}
return result;
}
private TableStats merge(TableStats s1, TableStats s2) {
s1.tableName = s2.tableName;
s1.bytes = Math.max(s1.bytes, s2.bytes);
s1.recordCount = s1.recordCount + s2.recordCount;
s1.rowCount = s1.rowCount + s2.rowCount;
return s1;
}
}