/**
*
* 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.regionserver;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import java.io.IOException;
import java.util.Iterator;
/**
* The MemStoreSegmentsIterator is designed to perform one iteration over given list of segments
* For another iteration new instance of MemStoreSegmentsIterator needs to be created
* The iterator is not thread-safe and must have only one instance per MemStore
* in each period of time
*/
@InterfaceAudience.Private
public abstract class MemStoreSegmentsIterator implements Iterator<Cell> {
protected final ScannerContext scannerContext;
// C-tor
public MemStoreSegmentsIterator(int compactionKVMax) throws IOException {
this.scannerContext = ScannerContext.newBuilder().setBatchLimit(compactionKVMax).build();
}
public abstract void close();
}