1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.hadoop.hbase.io;
19 import org.apache.hadoop.classification.InterfaceAudience;
20 import org.apache.hadoop.classification.InterfaceStability;
21
22 import org.apache.hadoop.hbase.CellScanner;
23
24 /**
25 * A CellScanner that knows its size in memory in bytes.
26 * Used playing the CellScanner into an in-memory buffer; knowing the size ahead of time saves
27 * on background buffer resizings.
28 */
29 @InterfaceAudience.Private
30 @InterfaceStability.Unstable
31 public interface SizedCellScanner extends CellScanner, HeapSize {}