001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase;
019
020import static org.junit.Assert.assertTrue;
021
022import org.apache.hadoop.hbase.io.HeapSize;
023import org.apache.hadoop.hbase.testclassification.SmallTests;
024import org.apache.hadoop.hbase.util.Bytes;
025import org.junit.ClassRule;
026import org.junit.Test;
027import org.junit.experimental.categories.Category;
028
029@Category(SmallTests.class)
030public class TestTagRewriteCell {
031
032  @ClassRule
033  public static final HBaseClassTestRule CLASS_RULE =
034      HBaseClassTestRule.forClass(TestTagRewriteCell.class);
035
036  @Test
037  public void testHeapSize() {
038    Cell originalCell = CellUtil.createCell(Bytes.toBytes("row"), Bytes.toBytes("value"));
039    final int fakeTagArrayLength = 10;
040    Cell trCell = PrivateCellUtil.createCell(originalCell, new byte[fakeTagArrayLength]);
041
042    // Get the heapSize before the internal tags array in trCell are nuked
043    long trCellHeapSize = ((HeapSize)trCell).heapSize();
044
045    // Make another TagRewriteCell with the original TagRewriteCell
046    // This happens on systems with more than one RegionObserver/Coproc loaded (such as
047    // VisibilityController and AccessController)
048    Cell trCell2 = PrivateCellUtil.createCell(trCell, new byte[fakeTagArrayLength]);
049
050    assertTrue("TagRewriteCell containing a TagRewriteCell's heapsize should be " +
051            "larger than a single TagRewriteCell's heapsize",
052        trCellHeapSize < ((HeapSize)trCell2).heapSize());
053    assertTrue("TagRewriteCell should have had nulled out tags array",
054        ((HeapSize)trCell).heapSize() < trCellHeapSize);
055  }
056}