svn commit: r1224793 - /hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestScannerSelectionUsingTTL.java

[te...@apache.org]

Author: tedyu
Date: Mon Dec 26 19:35:10 2011
New Revision: 1224793

URL: http://svn.apache.org/viewvc?rev=1224793&view=rev
Log:
HBASE-5010 Filter HFiles based on TTL - add TestScannerSelectionUsingTTL

Added:
    hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestScannerSelectionUsingTTL.java

Added: hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestScannerSelectionUsingTTL.java
URL: http://svn.apache.org/viewvc/hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestScannerSelectionUsingTTL.java?rev=1224793&view=auto
==============================================================================
--- hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestScannerSelectionUsingTTL.java (added)
+++ hbase/trunk/src/test/java/org/apache/hadoop/hbase/io/hfile/TestScannerSelectionUsingTTL.java Mon Dec 26 19:35:10 2011
@@ -0,0 +1,146 @@
+/*
+ * 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.io.hfile;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.HColumnDescriptor;
+import org.apache.hadoop.hbase.HRegionInfo;
+import org.apache.hadoop.hbase.HTableDescriptor;
+import org.apache.hadoop.hbase.KeyValue;
+import org.apache.hadoop.hbase.SmallTests;
+import org.apache.hadoop.hbase.client.Put;
+import org.apache.hadoop.hbase.client.Scan;
+import org.apache.hadoop.hbase.regionserver.HRegion;
+import org.apache.hadoop.hbase.regionserver.InternalScanner;
+import org.apache.hadoop.hbase.regionserver.StoreFile.BloomType;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.util.Threads;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameters;
+
+/**
+ * Test the optimization that does not scan files where all timestamps are
+ * expired.
+ */
+@RunWith(Parameterized.class)
+@Category(SmallTests.class)
+public class TestScannerSelectionUsingTTL {
+
+  private static final Log LOG =
+      LogFactory.getLog(TestScannerSelectionUsingTTL.class);
+
+  private static final HBaseTestingUtility TEST_UTIL =
+      new HBaseTestingUtility();
+  private static String TABLE = "myTable";
+  private static String FAMILY = "myCF";
+  private static byte[] FAMILY_BYTES = Bytes.toBytes(FAMILY);
+
+  private static final int TTL_SECONDS = 2;
+  private static final int TTL_MS = TTL_SECONDS * 1000;
+
+  private static final int NUM_EXPIRED_FILES = 2;
+  private static final int NUM_ROWS = 8;
+  private static final int NUM_COLS_PER_ROW = 5;
+
+  public final int numFreshFiles;
+
+  @Parameters
+  public static Collection<Object[]> parametersNumFreshFiles() {
+    return Arrays.asList(new Object[][]{
+        new Object[] { new Integer(1) },
+        new Object[] { new Integer(2) },
+        new Object[] { new Integer(3) }
+    });
+  }
+
+  public TestScannerSelectionUsingTTL(int numFreshFiles) {
+    this.numFreshFiles = numFreshFiles;
+  }
+
+  @Test
+  public void testScannerSelection() throws IOException {
+    HColumnDescriptor hcd =
+      new HColumnDescriptor(FAMILY_BYTES, Integer.MAX_VALUE,
+          Compression.Algorithm.NONE.getName(),
+          HColumnDescriptor.DEFAULT_IN_MEMORY,
+          HColumnDescriptor.DEFAULT_BLOCKCACHE,
+          TTL_SECONDS,
+          BloomType.NONE.toString());
+    HTableDescriptor htd = new HTableDescriptor(TABLE);
+    htd.addFamily(hcd);
+    HRegionInfo info = new HRegionInfo(Bytes.toBytes(TABLE));
+    HRegion region =
+        HRegion.createHRegion(info, TEST_UTIL.getClusterTestDir(),
+            TEST_UTIL.getConfiguration(), htd);
+
+    for (int iFile = 0; iFile < NUM_EXPIRED_FILES + numFreshFiles; ++iFile) {
+      if (iFile == NUM_EXPIRED_FILES) {
+        Threads.sleepWithoutInterrupt(TTL_MS);
+      }
+
+      for (int iRow = 0; iRow < NUM_ROWS; ++iRow) {
+        Put put = new Put(Bytes.toBytes("row" + iRow));
+        for (int iCol = 0; iCol < NUM_COLS_PER_ROW; ++iCol) {
+          put.add(FAMILY_BYTES, Bytes.toBytes("col" + iCol),
+              Bytes.toBytes("value" + iFile + "_" + iRow + "_" + iCol));
+        }
+        region.put(put);
+      }
+      region.flushcache();
+    }
+
+    Scan scan = new Scan();
+    scan.setMaxVersions(Integer.MAX_VALUE);
+    CacheConfig cacheConf = new CacheConfig(TEST_UTIL.getConfiguration());
+    LruBlockCache cache = (LruBlockCache) cacheConf.getBlockCache();
+    cache.clearCache();
+    InternalScanner scanner = region.getScanner(scan);
+    List<KeyValue> results = new ArrayList<KeyValue>();
+    final int expectedKVsPerRow = numFreshFiles * NUM_COLS_PER_ROW;
+    int numReturnedRows = 0;
+    LOG.info("Scanning the entire table");
+    while (scanner.next(results) || results.size() > 0) {
+      assertEquals(expectedKVsPerRow, results.size());
+      ++numReturnedRows;
+      results.clear();
+    }
+    assertEquals(NUM_ROWS, numReturnedRows);
+    Set<String> accessedFiles = cache.getCachedFileNamesForTest();
+    LOG.debug("Files accessed during scan: " + accessedFiles);
+    assertEquals("If " + (NUM_EXPIRED_FILES + numFreshFiles) + " files are "
+        + "accessed instead of " + numFreshFiles + ", we are "
+        + "not filtering expired files out.", numFreshFiles,
+        accessedFiles.size());
+
+    region.close();
+  }
+
+}