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17 package org.apache.hadoop.hbase.io.hfile;
18
19 import static org.junit.Assert.assertEquals;
20
21 import java.io.IOException;
22 import java.util.ArrayList;
23 import java.util.Collection;
24 import java.util.List;
25 import java.util.Map;
26 import java.util.Set;
27
28 import org.apache.commons.logging.Log;
29 import org.apache.commons.logging.LogFactory;
30 import org.apache.hadoop.conf.Configuration;
31 import org.apache.hadoop.hbase.HBaseTestingUtility;
32 import org.apache.hadoop.hbase.HColumnDescriptor;
33 import org.apache.hadoop.hbase.HRegionInfo;
34 import org.apache.hadoop.hbase.HTableDescriptor;
35 import org.apache.hadoop.hbase.KeyValue;
36 import org.apache.hadoop.hbase.SmallTests;
37 import org.apache.hadoop.hbase.client.Put;
38 import org.apache.hadoop.hbase.client.Scan;
39 import org.apache.hadoop.hbase.io.hfile.BlockType.BlockCategory;
40 import org.apache.hadoop.hbase.regionserver.HRegion;
41 import org.apache.hadoop.hbase.regionserver.InternalScanner;
42 import org.apache.hadoop.hbase.regionserver.metrics.SchemaMetrics;
43 import org.apache.hadoop.hbase.regionserver.metrics.SchemaMetrics.BlockMetricType;
44 import org.apache.hadoop.hbase.util.Bytes;
45 import org.apache.hadoop.hbase.util.Threads;
46 import org.junit.Test;
47 import org.junit.experimental.categories.Category;
48 import org.junit.runner.RunWith;
49 import org.junit.runners.Parameterized;
50 import org.junit.runners.Parameterized.Parameters;
51
52
53
54
55
56 @RunWith(Parameterized.class)
57 @Category(SmallTests.class)
58 public class TestScannerSelectionUsingTTL {
59
60 private static final Log LOG =
61 LogFactory.getLog(TestScannerSelectionUsingTTL.class);
62
63 private static final HBaseTestingUtility TEST_UTIL =
64 new HBaseTestingUtility();
65 private static String TABLE = "myTable";
66 private static String FAMILY = "myCF";
67 private static byte[] FAMILY_BYTES = Bytes.toBytes(FAMILY);
68
69 private static final int TTL_SECONDS = 2;
70 private static final int TTL_MS = TTL_SECONDS * 1000;
71
72 private static final int NUM_EXPIRED_FILES = 2;
73 private static final int NUM_ROWS = 8;
74 private static final int NUM_COLS_PER_ROW = 5;
75
76 public final int numFreshFiles, totalNumFiles;
77
78
79 private final boolean explicitCompaction;
80
81 @Parameters
82 public static Collection<Object[]> parameters() {
83 List<Object[]> params = new ArrayList<Object[]>();
84 for (int numFreshFiles = 1; numFreshFiles <= 3; ++numFreshFiles) {
85 for (boolean explicitCompaction : new boolean[] { false, true }) {
86 params.add(new Object[] { numFreshFiles, explicitCompaction });
87 }
88 }
89 return params;
90 }
91
92 public TestScannerSelectionUsingTTL(int numFreshFiles,
93 boolean explicitCompaction) {
94 this.numFreshFiles = numFreshFiles;
95 this.totalNumFiles = numFreshFiles + NUM_EXPIRED_FILES;
96 this.explicitCompaction = explicitCompaction;
97 }
98
99 @Test
100 public void testScannerSelection() throws IOException {
101 Configuration conf = TEST_UTIL.getConfiguration();
102 conf.setBoolean("hbase.store.delete.expired.storefile", false);
103 HColumnDescriptor hcd =
104 new HColumnDescriptor(FAMILY_BYTES)
105 .setMaxVersions(Integer.MAX_VALUE)
106 .setTimeToLive(TTL_SECONDS);
107 HTableDescriptor htd = new HTableDescriptor(TABLE);
108 htd.addFamily(hcd);
109 HRegionInfo info = new HRegionInfo(Bytes.toBytes(TABLE));
110 HRegion region =
111 HRegion.createHRegion(info, TEST_UTIL.getClusterTestDir(),
112 conf, htd);
113
114 for (int iFile = 0; iFile < totalNumFiles; ++iFile) {
115 if (iFile == NUM_EXPIRED_FILES) {
116 Threads.sleepWithoutInterrupt(TTL_MS);
117 }
118
119 for (int iRow = 0; iRow < NUM_ROWS; ++iRow) {
120 Put put = new Put(Bytes.toBytes("row" + iRow));
121 for (int iCol = 0; iCol < NUM_COLS_PER_ROW; ++iCol) {
122 put.add(FAMILY_BYTES, Bytes.toBytes("col" + iCol),
123 Bytes.toBytes("value" + iFile + "_" + iRow + "_" + iCol));
124 }
125 region.put(put);
126 }
127 region.flushcache();
128 }
129
130 Scan scan = new Scan();
131 scan.setMaxVersions(Integer.MAX_VALUE);
132 CacheConfig cacheConf = new CacheConfig(conf);
133 LruBlockCache cache = (LruBlockCache) cacheConf.getBlockCache();
134 cache.clearCache();
135 InternalScanner scanner = region.getScanner(scan);
136 List<KeyValue> results = new ArrayList<KeyValue>();
137 final int expectedKVsPerRow = numFreshFiles * NUM_COLS_PER_ROW;
138 int numReturnedRows = 0;
139 LOG.info("Scanning the entire table");
140 while (scanner.next(results) || results.size() > 0) {
141 assertEquals(expectedKVsPerRow, results.size());
142 ++numReturnedRows;
143 results.clear();
144 }
145 assertEquals(NUM_ROWS, numReturnedRows);
146 Set<String> accessedFiles = cache.getCachedFileNamesForTest();
147 LOG.debug("Files accessed during scan: " + accessedFiles);
148
149 Map<String, Long> metricsBeforeCompaction =
150 SchemaMetrics.getMetricsSnapshot();
151
152
153 if (explicitCompaction) {
154 region.getStore(FAMILY_BYTES).compactRecentForTesting(totalNumFiles);
155 } else {
156 region.compactStores();
157 }
158
159 SchemaMetrics.validateMetricChanges(metricsBeforeCompaction);
160 Map<String, Long> compactionMetrics =
161 SchemaMetrics.diffMetrics(metricsBeforeCompaction,
162 SchemaMetrics.getMetricsSnapshot());
163 long compactionDataBlocksRead = SchemaMetrics.getLong(
164 compactionMetrics,
165 SchemaMetrics.getInstance(TABLE, FAMILY).getBlockMetricName(
166 BlockCategory.DATA, true, BlockMetricType.READ_COUNT));
167 assertEquals("Invalid number of blocks accessed during compaction. " +
168 "We only expect non-expired files to be accessed.",
169 numFreshFiles, compactionDataBlocksRead);
170 region.close();
171 }
172
173 }