Java tutorial
/** * * 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 java.io.IOException; import java.nio.ByteBuffer; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Comparator; import java.util.List; import java.util.Map; import java.util.TreeSet; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.hadoop.hbase.Cell; import org.apache.hadoop.hbase.HBaseTestCase; import org.apache.hadoop.hbase.HBaseTestingUtility; import org.apache.hadoop.hbase.HConstants; import org.apache.hadoop.hbase.HRegionInfo; import org.apache.hadoop.hbase.KeyValue; import org.apache.hadoop.hbase.KeyValueUtil; import org.apache.hadoop.hbase.SmallTests; import org.apache.hadoop.hbase.TableName; import org.apache.hadoop.hbase.client.Scan; import org.apache.hadoop.hbase.io.HFileLink; import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding; import org.apache.hadoop.hbase.io.hfile.BlockCache; import org.apache.hadoop.hbase.io.hfile.CacheConfig; import org.apache.hadoop.hbase.io.hfile.CacheStats; import org.apache.hadoop.hbase.io.hfile.HFileContext; import org.apache.hadoop.hbase.io.hfile.HFileContextBuilder; import org.apache.hadoop.hbase.io.hfile.HFileDataBlockEncoder; import org.apache.hadoop.hbase.io.hfile.HFileDataBlockEncoderImpl; import org.apache.hadoop.hbase.io.hfile.HFileScanner; import org.apache.hadoop.hbase.util.BloomFilterFactory; import org.apache.hadoop.hbase.util.Bytes; import org.apache.hadoop.hbase.util.ChecksumType; import org.apache.hadoop.hbase.util.FSUtils; import org.junit.experimental.categories.Category; import org.mockito.Mockito; import com.google.common.base.Joiner; import com.google.common.collect.Iterables; import com.google.common.collect.Lists; /** * Test HStoreFile */ @Category(SmallTests.class) public class TestStoreFile extends HBaseTestCase { static final Log LOG = LogFactory.getLog(TestStoreFile.class); private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); private CacheConfig cacheConf = new CacheConfig(TEST_UTIL.getConfiguration()); private static String ROOT_DIR = TEST_UTIL.getDataTestDir("TestStoreFile").toString(); private static final ChecksumType CKTYPE = ChecksumType.CRC32; private static final int CKBYTES = 512; private static String TEST_FAMILY = "cf"; @Override public void setUp() throws Exception { super.setUp(); } @Override public void tearDown() throws Exception { super.tearDown(); } /** * Write a file and then assert that we can read from top and bottom halves * using two HalfMapFiles. * @throws Exception */ public void testBasicHalfMapFile() throws Exception { final HRegionInfo hri = new HRegionInfo(TableName.valueOf("testBasicHalfMapFileTb")); HRegionFileSystem regionFs = HRegionFileSystem.createRegionOnFileSystem(conf, fs, new Path(this.testDir, hri.getTable().getNameAsString()), hri); HFileContext meta = new HFileContextBuilder().withBlockSize(2 * 1024).build(); StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs) .withFilePath(regionFs.createTempName()).withFileContext(meta).build(); writeStoreFile(writer); Path sfPath = regionFs.commitStoreFile(TEST_FAMILY, writer.getPath()); StoreFile sf = new StoreFile(this.fs, sfPath, conf, cacheConf, BloomType.NONE); checkHalfHFile(regionFs, sf); } private void writeStoreFile(final StoreFile.Writer writer) throws IOException { writeStoreFile(writer, Bytes.toBytes(getName()), Bytes.toBytes(getName())); } // pick an split point (roughly halfway) byte[] SPLITKEY = new byte[] { (LAST_CHAR + FIRST_CHAR) / 2, FIRST_CHAR }; /* * Writes HStoreKey and ImmutableBytes data to passed writer and * then closes it. * @param writer * @throws IOException */ public static void writeStoreFile(final StoreFile.Writer writer, byte[] fam, byte[] qualifier) throws IOException { long now = System.currentTimeMillis(); try { for (char d = FIRST_CHAR; d <= LAST_CHAR; d++) { for (char e = FIRST_CHAR; e <= LAST_CHAR; e++) { byte[] b = new byte[] { (byte) d, (byte) e }; writer.append(new KeyValue(b, fam, qualifier, now, b)); } } } finally { writer.close(); } } /** * Test that our mechanism of writing store files in one region to reference * store files in other regions works. * @throws IOException */ public void testReference() throws IOException { final HRegionInfo hri = new HRegionInfo(TableName.valueOf("testReferenceTb")); HRegionFileSystem regionFs = HRegionFileSystem.createRegionOnFileSystem(conf, fs, new Path(this.testDir, hri.getTable().getNameAsString()), hri); HFileContext meta = new HFileContextBuilder().withBlockSize(8 * 1024).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs) .withFilePath(regionFs.createTempName()).withFileContext(meta).build(); writeStoreFile(writer); Path hsfPath = regionFs.commitStoreFile(TEST_FAMILY, writer.getPath()); StoreFile hsf = new StoreFile(this.fs, hsfPath, conf, cacheConf, BloomType.NONE); StoreFile.Reader reader = hsf.createReader(); // Split on a row, not in middle of row. Midkey returned by reader // may be in middle of row. Create new one with empty column and // timestamp. KeyValue kv = KeyValue.createKeyValueFromKey(reader.midkey()); byte[] midRow = kv.getRow(); kv = KeyValue.createKeyValueFromKey(reader.getLastKey()); byte[] finalRow = kv.getRow(); // Make a reference HRegionInfo splitHri = new HRegionInfo(hri.getTable(), null, midRow); Path refPath = splitStoreFile(regionFs, splitHri, TEST_FAMILY, hsf, midRow, true); StoreFile refHsf = new StoreFile(this.fs, refPath, conf, cacheConf, BloomType.NONE); // Now confirm that I can read from the reference and that it only gets // keys from top half of the file. HFileScanner s = refHsf.createReader().getScanner(false, false); for (boolean first = true; (!s.isSeeked() && s.seekTo()) || s.next();) { ByteBuffer bb = s.getKey(); kv = KeyValue.createKeyValueFromKey(bb); if (first) { assertTrue(Bytes.equals(kv.getRow(), midRow)); first = false; } } assertTrue(Bytes.equals(kv.getRow(), finalRow)); } public void testHFileLink() throws IOException { final HRegionInfo hri = new HRegionInfo(TableName.valueOf("testHFileLinkTb")); // force temp data in hbase/target/test-data instead of /tmp/hbase-xxxx/ Configuration testConf = new Configuration(this.conf); FSUtils.setRootDir(testConf, this.testDir); HRegionFileSystem regionFs = HRegionFileSystem.createRegionOnFileSystem(testConf, fs, FSUtils.getTableDir(this.testDir, hri.getTable()), hri); HFileContext meta = new HFileContextBuilder().withBlockSize(8 * 1024).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs) .withFilePath(regionFs.createTempName()).withFileContext(meta).build(); writeStoreFile(writer); Path storeFilePath = regionFs.commitStoreFile(TEST_FAMILY, writer.getPath()); Path dstPath = new Path(regionFs.getTableDir(), new Path("test-region", TEST_FAMILY)); HFileLink.create(testConf, this.fs, dstPath, hri, storeFilePath.getName()); Path linkFilePath = new Path(dstPath, HFileLink.createHFileLinkName(hri, storeFilePath.getName())); // Try to open store file from link StoreFileInfo storeFileInfo = new StoreFileInfo(testConf, this.fs, linkFilePath); StoreFile hsf = new StoreFile(this.fs, storeFileInfo, testConf, cacheConf, BloomType.NONE); assertTrue(storeFileInfo.isLink()); // Now confirm that I can read from the link int count = 1; HFileScanner s = hsf.createReader().getScanner(false, false); s.seekTo(); while (s.next()) { count++; } assertEquals((LAST_CHAR - FIRST_CHAR + 1) * (LAST_CHAR - FIRST_CHAR + 1), count); } /** * This test creates an hfile and then the dir structures and files to verify that references * to hfilelinks (created by snapshot clones) can be properly interpreted. */ public void testReferenceToHFileLink() throws IOException { // force temp data in hbase/target/test-data instead of /tmp/hbase-xxxx/ Configuration testConf = new Configuration(this.conf); FSUtils.setRootDir(testConf, this.testDir); // adding legal table name chars to verify regex handles it. HRegionInfo hri = new HRegionInfo(TableName.valueOf("_original-evil-name")); HRegionFileSystem regionFs = HRegionFileSystem.createRegionOnFileSystem(testConf, fs, FSUtils.getTableDir(this.testDir, hri.getTable()), hri); HFileContext meta = new HFileContextBuilder().withBlockSize(8 * 1024).build(); // Make a store file and write data to it. <root>/<tablename>/<rgn>/<cf>/<file> StoreFile.Writer writer = new StoreFile.WriterBuilder(testConf, cacheConf, this.fs) .withFilePath(regionFs.createTempName()).withFileContext(meta).build(); writeStoreFile(writer); Path storeFilePath = regionFs.commitStoreFile(TEST_FAMILY, writer.getPath()); // create link to store file. <root>/clone/region/<cf>/<hfile>-<region>-<table> HRegionInfo hriClone = new HRegionInfo(TableName.valueOf("clone")); HRegionFileSystem cloneRegionFs = HRegionFileSystem.createRegionOnFileSystem(testConf, fs, FSUtils.getTableDir(this.testDir, hri.getTable()), hriClone); Path dstPath = cloneRegionFs.getStoreDir(TEST_FAMILY); HFileLink.create(testConf, this.fs, dstPath, hri, storeFilePath.getName()); Path linkFilePath = new Path(dstPath, HFileLink.createHFileLinkName(hri, storeFilePath.getName())); // create splits of the link. // <root>/clone/splitA/<cf>/<reftohfilelink>, // <root>/clone/splitB/<cf>/<reftohfilelink> HRegionInfo splitHriA = new HRegionInfo(hri.getTable(), null, SPLITKEY); HRegionInfo splitHriB = new HRegionInfo(hri.getTable(), SPLITKEY, null); StoreFile f = new StoreFile(fs, linkFilePath, testConf, cacheConf, BloomType.NONE); Path pathA = splitStoreFile(cloneRegionFs, splitHriA, TEST_FAMILY, f, SPLITKEY, true); // top Path pathB = splitStoreFile(cloneRegionFs, splitHriB, TEST_FAMILY, f, SPLITKEY, false);// bottom // OK test the thing FSUtils.logFileSystemState(fs, this.testDir, LOG); // There is a case where a file with the hfilelink pattern is actually a daughter // reference to a hfile link. This code in StoreFile that handles this case. // Try to open store file from link StoreFile hsfA = new StoreFile(this.fs, pathA, testConf, cacheConf, BloomType.NONE); // Now confirm that I can read from the ref to link int count = 1; HFileScanner s = hsfA.createReader().getScanner(false, false); s.seekTo(); while (s.next()) { count++; } assertTrue(count > 0); // read some rows here // Try to open store file from link StoreFile hsfB = new StoreFile(this.fs, pathB, testConf, cacheConf, BloomType.NONE); // Now confirm that I can read from the ref to link HFileScanner sB = hsfB.createReader().getScanner(false, false); sB.seekTo(); //count++ as seekTo() will advance the scanner count++; while (sB.next()) { count++; } // read the rest of the rows assertEquals((LAST_CHAR - FIRST_CHAR + 1) * (LAST_CHAR - FIRST_CHAR + 1), count); } private void checkHalfHFile(final HRegionFileSystem regionFs, final StoreFile f) throws IOException { byte[] midkey = f.createReader().midkey(); KeyValue midKV = KeyValue.createKeyValueFromKey(midkey); byte[] midRow = midKV.getRow(); // Create top split. HRegionInfo topHri = new HRegionInfo(regionFs.getRegionInfo().getTable(), null, midRow); Path topPath = splitStoreFile(regionFs, topHri, TEST_FAMILY, f, midRow, true); // Create bottom split. HRegionInfo bottomHri = new HRegionInfo(regionFs.getRegionInfo().getTable(), midRow, null); Path bottomPath = splitStoreFile(regionFs, bottomHri, TEST_FAMILY, f, midRow, false); // Make readers on top and bottom. StoreFile.Reader top = new StoreFile(this.fs, topPath, conf, cacheConf, BloomType.NONE).createReader(); StoreFile.Reader bottom = new StoreFile(this.fs, bottomPath, conf, cacheConf, BloomType.NONE) .createReader(); ByteBuffer previous = null; LOG.info("Midkey: " + midKV.toString()); ByteBuffer bbMidkeyBytes = ByteBuffer.wrap(midkey); try { // Now make two HalfMapFiles and assert they can read the full backing // file, one from the top and the other from the bottom. // Test bottom half first. // Now test reading from the top. boolean first = true; ByteBuffer key = null; HFileScanner topScanner = top.getScanner(false, false); while ((!topScanner.isSeeked() && topScanner.seekTo()) || (topScanner.isSeeked() && topScanner.next())) { key = topScanner.getKey(); if (topScanner.getReader().getComparator().compareFlatKey(key.array(), key.arrayOffset(), key.limit(), midkey, 0, midkey.length) < 0) { fail("key=" + Bytes.toStringBinary(key) + " < midkey=" + Bytes.toStringBinary(midkey)); } if (first) { first = false; LOG.info("First in top: " + Bytes.toString(Bytes.toBytes(key))); } } LOG.info("Last in top: " + Bytes.toString(Bytes.toBytes(key))); first = true; HFileScanner bottomScanner = bottom.getScanner(false, false); while ((!bottomScanner.isSeeked() && bottomScanner.seekTo()) || bottomScanner.next()) { previous = bottomScanner.getKey(); key = bottomScanner.getKey(); if (first) { first = false; LOG.info("First in bottom: " + Bytes.toString(Bytes.toBytes(previous))); } assertTrue(key.compareTo(bbMidkeyBytes) < 0); } if (previous != null) { LOG.info("Last in bottom: " + Bytes.toString(Bytes.toBytes(previous))); } // Remove references. regionFs.cleanupDaughterRegion(topHri); regionFs.cleanupDaughterRegion(bottomHri); // Next test using a midkey that does not exist in the file. // First, do a key that is < than first key. Ensure splits behave // properly. byte[] badmidkey = Bytes.toBytes(" ."); assertTrue(fs.exists(f.getPath())); topPath = splitStoreFile(regionFs, topHri, TEST_FAMILY, f, badmidkey, true); bottomPath = splitStoreFile(regionFs, bottomHri, TEST_FAMILY, f, badmidkey, false); assertNull(bottomPath); top = new StoreFile(this.fs, topPath, conf, cacheConf, BloomType.NONE).createReader(); // Now read from the top. first = true; topScanner = top.getScanner(false, false); while ((!topScanner.isSeeked() && topScanner.seekTo()) || topScanner.next()) { key = topScanner.getKey(); assertTrue(topScanner.getReader().getComparator().compareFlatKey(key.array(), key.arrayOffset(), key.limit(), badmidkey, 0, badmidkey.length) >= 0); if (first) { first = false; KeyValue keyKV = KeyValue.createKeyValueFromKey(key); LOG.info("First top when key < bottom: " + keyKV); String tmp = Bytes.toString(keyKV.getRow()); for (int i = 0; i < tmp.length(); i++) { assertTrue(tmp.charAt(i) == 'a'); } } } KeyValue keyKV = KeyValue.createKeyValueFromKey(key); LOG.info("Last top when key < bottom: " + keyKV); String tmp = Bytes.toString(keyKV.getRow()); for (int i = 0; i < tmp.length(); i++) { assertTrue(tmp.charAt(i) == 'z'); } // Remove references. regionFs.cleanupDaughterRegion(topHri); regionFs.cleanupDaughterRegion(bottomHri); // Test when badkey is > than last key in file ('||' > 'zz'). badmidkey = Bytes.toBytes("|||"); topPath = splitStoreFile(regionFs, topHri, TEST_FAMILY, f, badmidkey, true); bottomPath = splitStoreFile(regionFs, bottomHri, TEST_FAMILY, f, badmidkey, false); assertNull(topPath); bottom = new StoreFile(this.fs, bottomPath, conf, cacheConf, BloomType.NONE).createReader(); first = true; bottomScanner = bottom.getScanner(false, false); while ((!bottomScanner.isSeeked() && bottomScanner.seekTo()) || bottomScanner.next()) { key = bottomScanner.getKey(); if (first) { first = false; keyKV = KeyValue.createKeyValueFromKey(key); LOG.info("First bottom when key > top: " + keyKV); tmp = Bytes.toString(keyKV.getRow()); for (int i = 0; i < tmp.length(); i++) { assertTrue(tmp.charAt(i) == 'a'); } } } keyKV = KeyValue.createKeyValueFromKey(key); LOG.info("Last bottom when key > top: " + keyKV); for (int i = 0; i < tmp.length(); i++) { assertTrue(Bytes.toString(keyKV.getRow()).charAt(i) == 'z'); } } finally { if (top != null) { top.close(true); // evict since we are about to delete the file } if (bottom != null) { bottom.close(true); // evict since we are about to delete the file } fs.delete(f.getPath(), true); } } private static final String localFormatter = "%010d"; private void bloomWriteRead(StoreFile.Writer writer, FileSystem fs) throws Exception { float err = conf.getFloat(BloomFilterFactory.IO_STOREFILE_BLOOM_ERROR_RATE, 0); Path f = writer.getPath(); long now = System.currentTimeMillis(); for (int i = 0; i < 2000; i += 2) { String row = String.format(localFormatter, i); KeyValue kv = new KeyValue(row.getBytes(), "family".getBytes(), "col".getBytes(), now, "value".getBytes()); writer.append(kv); } writer.close(); StoreFile.Reader reader = new StoreFile.Reader(fs, f, cacheConf, conf); reader.loadFileInfo(); reader.loadBloomfilter(); StoreFileScanner scanner = reader.getStoreFileScanner(false, false); // check false positives rate int falsePos = 0; int falseNeg = 0; for (int i = 0; i < 2000; i++) { String row = String.format(localFormatter, i); TreeSet<byte[]> columns = new TreeSet<byte[]>(Bytes.BYTES_COMPARATOR); columns.add("family:col".getBytes()); Scan scan = new Scan(row.getBytes(), row.getBytes()); scan.addColumn("family".getBytes(), "family:col".getBytes()); boolean exists = scanner.shouldUseScanner(scan, columns, Long.MIN_VALUE); if (i % 2 == 0) { if (!exists) falseNeg++; } else { if (exists) falsePos++; } } reader.close(true); // evict because we are about to delete the file fs.delete(f, true); assertEquals("False negatives: " + falseNeg, 0, falseNeg); int maxFalsePos = (int) (2 * 2000 * err); assertTrue("Too many false positives: " + falsePos + " (err=" + err + ", expected no more than " + maxFalsePos + ")", falsePos <= maxFalsePos); } private static final int BLOCKSIZE_SMALL = 8192; public void testBloomFilter() throws Exception { FileSystem fs = FileSystem.getLocal(conf); conf.setFloat(BloomFilterFactory.IO_STOREFILE_BLOOM_ERROR_RATE, (float) 0.01); conf.setBoolean(BloomFilterFactory.IO_STOREFILE_BLOOM_ENABLED, true); // write the file Path f = new Path(ROOT_DIR, getName()); HFileContext meta = new HFileContextBuilder().withBlockSize(BLOCKSIZE_SMALL).withChecksumType(CKTYPE) .withBytesPerCheckSum(CKBYTES).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs).withFilePath(f) .withBloomType(BloomType.ROW).withMaxKeyCount(2000).withFileContext(meta).build(); bloomWriteRead(writer, fs); } public void testDeleteFamilyBloomFilter() throws Exception { FileSystem fs = FileSystem.getLocal(conf); conf.setFloat(BloomFilterFactory.IO_STOREFILE_BLOOM_ERROR_RATE, (float) 0.01); conf.setBoolean(BloomFilterFactory.IO_STOREFILE_BLOOM_ENABLED, true); float err = conf.getFloat(BloomFilterFactory.IO_STOREFILE_BLOOM_ERROR_RATE, 0); // write the file Path f = new Path(ROOT_DIR, getName()); HFileContext meta = new HFileContextBuilder().withBlockSize(BLOCKSIZE_SMALL).withChecksumType(CKTYPE) .withBytesPerCheckSum(CKBYTES).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs).withFilePath(f) .withMaxKeyCount(2000).withFileContext(meta).build(); // add delete family long now = System.currentTimeMillis(); for (int i = 0; i < 2000; i += 2) { String row = String.format(localFormatter, i); KeyValue kv = new KeyValue(row.getBytes(), "family".getBytes(), "col".getBytes(), now, KeyValue.Type.DeleteFamily, "value".getBytes()); writer.append(kv); } writer.close(); StoreFile.Reader reader = new StoreFile.Reader(fs, f, cacheConf, conf); reader.loadFileInfo(); reader.loadBloomfilter(); // check false positives rate int falsePos = 0; int falseNeg = 0; for (int i = 0; i < 2000; i++) { String row = String.format(localFormatter, i); byte[] rowKey = Bytes.toBytes(row); boolean exists = reader.passesDeleteFamilyBloomFilter(rowKey, 0, rowKey.length); if (i % 2 == 0) { if (!exists) falseNeg++; } else { if (exists) falsePos++; } } assertEquals(1000, reader.getDeleteFamilyCnt()); reader.close(true); // evict because we are about to delete the file fs.delete(f, true); assertEquals("False negatives: " + falseNeg, 0, falseNeg); int maxFalsePos = (int) (2 * 2000 * err); assertTrue( "Too many false positives: " + falsePos + " (err=" + err + ", expected no more than " + maxFalsePos, falsePos <= maxFalsePos); } /** * Test for HBASE-8012 */ public void testReseek() throws Exception { // write the file Path f = new Path(ROOT_DIR, getName()); HFileContext meta = new HFileContextBuilder().withBlockSize(8 * 1024).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs).withFilePath(f) .withFileContext(meta).build(); writeStoreFile(writer); writer.close(); StoreFile.Reader reader = new StoreFile.Reader(fs, f, cacheConf, conf); // Now do reseek with empty KV to position to the beginning of the file KeyValue k = KeyValueUtil.createFirstOnRow(HConstants.EMPTY_BYTE_ARRAY); StoreFileScanner s = reader.getStoreFileScanner(false, false); s.reseek(k); assertNotNull("Intial reseek should position at the beginning of the file", s.peek()); } public void testBloomTypes() throws Exception { float err = (float) 0.01; FileSystem fs = FileSystem.getLocal(conf); conf.setFloat(BloomFilterFactory.IO_STOREFILE_BLOOM_ERROR_RATE, err); conf.setBoolean(BloomFilterFactory.IO_STOREFILE_BLOOM_ENABLED, true); int rowCount = 50; int colCount = 10; int versions = 2; // run once using columns and once using rows BloomType[] bt = { BloomType.ROWCOL, BloomType.ROW }; int[] expKeys = { rowCount * colCount, rowCount }; // below line deserves commentary. it is expected bloom false positives // column = rowCount*2*colCount inserts // row-level = only rowCount*2 inserts, but failures will be magnified by // 2nd for loop for every column (2*colCount) float[] expErr = { 2 * rowCount * colCount * err, 2 * rowCount * 2 * colCount * err }; for (int x : new int[] { 0, 1 }) { // write the file Path f = new Path(ROOT_DIR, getName() + x); HFileContext meta = new HFileContextBuilder().withBlockSize(BLOCKSIZE_SMALL).withChecksumType(CKTYPE) .withBytesPerCheckSum(CKBYTES).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs).withFilePath(f) .withBloomType(bt[x]).withMaxKeyCount(expKeys[x]).withFileContext(meta).build(); long now = System.currentTimeMillis(); for (int i = 0; i < rowCount * 2; i += 2) { // rows for (int j = 0; j < colCount * 2; j += 2) { // column qualifiers String row = String.format(localFormatter, i); String col = String.format(localFormatter, j); for (int k = 0; k < versions; ++k) { // versions KeyValue kv = new KeyValue(row.getBytes(), "family".getBytes(), ("col" + col).getBytes(), now - k, Bytes.toBytes((long) -1)); writer.append(kv); } } } writer.close(); StoreFile.Reader reader = new StoreFile.Reader(fs, f, cacheConf, conf); reader.loadFileInfo(); reader.loadBloomfilter(); StoreFileScanner scanner = reader.getStoreFileScanner(false, false); assertEquals(expKeys[x], reader.generalBloomFilter.getKeyCount()); // check false positives rate int falsePos = 0; int falseNeg = 0; for (int i = 0; i < rowCount * 2; ++i) { // rows for (int j = 0; j < colCount * 2; ++j) { // column qualifiers String row = String.format(localFormatter, i); String col = String.format(localFormatter, j); TreeSet<byte[]> columns = new TreeSet<byte[]>(Bytes.BYTES_COMPARATOR); columns.add(("col" + col).getBytes()); Scan scan = new Scan(row.getBytes(), row.getBytes()); scan.addColumn("family".getBytes(), ("col" + col).getBytes()); boolean exists = scanner.shouldUseScanner(scan, columns, Long.MIN_VALUE); boolean shouldRowExist = i % 2 == 0; boolean shouldColExist = j % 2 == 0; shouldColExist = shouldColExist || bt[x] == BloomType.ROW; if (shouldRowExist && shouldColExist) { if (!exists) falseNeg++; } else { if (exists) falsePos++; } } } reader.close(true); // evict because we are about to delete the file fs.delete(f, true); System.out.println(bt[x].toString()); System.out.println(" False negatives: " + falseNeg); System.out.println(" False positives: " + falsePos); assertEquals(0, falseNeg); assertTrue(falsePos < 2 * expErr[x]); } } public void testSeqIdComparator() { assertOrdering(StoreFile.Comparators.SEQ_ID, mockStoreFile(true, 100, 1000, -1, "/foo/123"), mockStoreFile(true, 100, 1000, -1, "/foo/124"), mockStoreFile(true, 99, 1000, -1, "/foo/126"), mockStoreFile(true, 98, 2000, -1, "/foo/126"), mockStoreFile(false, 3453, -1, 1, "/foo/1"), mockStoreFile(false, 2, -1, 3, "/foo/2"), mockStoreFile(false, 1000, -1, 5, "/foo/2"), mockStoreFile(false, 76, -1, 5, "/foo/3")); } /** * Assert that the given comparator orders the given storefiles in the * same way that they're passed. */ private void assertOrdering(Comparator<StoreFile> comparator, StoreFile... sfs) { ArrayList<StoreFile> sorted = Lists.newArrayList(sfs); Collections.shuffle(sorted); Collections.sort(sorted, comparator); LOG.debug("sfs: " + Joiner.on(",").join(sfs)); LOG.debug("sorted: " + Joiner.on(",").join(sorted)); assertTrue(Iterables.elementsEqual(Arrays.asList(sfs), sorted)); } /** * Create a mock StoreFile with the given attributes. */ private StoreFile mockStoreFile(boolean bulkLoad, long size, long bulkTimestamp, long seqId, String path) { StoreFile mock = Mockito.mock(StoreFile.class); StoreFile.Reader reader = Mockito.mock(StoreFile.Reader.class); Mockito.doReturn(size).when(reader).length(); Mockito.doReturn(reader).when(mock).getReader(); Mockito.doReturn(bulkLoad).when(mock).isBulkLoadResult(); Mockito.doReturn(bulkTimestamp).when(mock).getBulkLoadTimestamp(); Mockito.doReturn(seqId).when(mock).getMaxSequenceId(); Mockito.doReturn(new Path(path)).when(mock).getPath(); String name = "mock storefile, bulkLoad=" + bulkLoad + " bulkTimestamp=" + bulkTimestamp + " seqId=" + seqId + " path=" + path; Mockito.doReturn(name).when(mock).toString(); return mock; } /** * Generate a list of KeyValues for testing based on given parameters * @param timestamps * @param numRows * @param qualifier * @param family * @return */ List<KeyValue> getKeyValueSet(long[] timestamps, int numRows, byte[] qualifier, byte[] family) { List<KeyValue> kvList = new ArrayList<KeyValue>(); for (int i = 1; i <= numRows; i++) { byte[] b = Bytes.toBytes(i); LOG.info(Bytes.toString(b)); LOG.info(Bytes.toString(b)); for (long timestamp : timestamps) { kvList.add(new KeyValue(b, family, qualifier, timestamp, b)); } } return kvList; } /** * Test to ensure correctness when using StoreFile with multiple timestamps * @throws IOException */ public void testMultipleTimestamps() throws IOException { byte[] family = Bytes.toBytes("familyname"); byte[] qualifier = Bytes.toBytes("qualifier"); int numRows = 10; long[] timestamps = new long[] { 20, 10, 5, 1 }; Scan scan = new Scan(); // Make up a directory hierarchy that has a regiondir ("7e0102") and familyname. Path storedir = new Path(new Path(this.testDir, "7e0102"), "familyname"); Path dir = new Path(storedir, "1234567890"); HFileContext meta = new HFileContextBuilder().withBlockSize(8 * 1024).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs).withOutputDir(dir) .withFileContext(meta).build(); List<KeyValue> kvList = getKeyValueSet(timestamps, numRows, family, qualifier); for (KeyValue kv : kvList) { writer.append(kv); } writer.appendMetadata(0, false); writer.close(); StoreFile hsf = new StoreFile(this.fs, writer.getPath(), conf, cacheConf, BloomType.NONE); StoreFile.Reader reader = hsf.createReader(); StoreFileScanner scanner = reader.getStoreFileScanner(false, false); TreeSet<byte[]> columns = new TreeSet<byte[]>(Bytes.BYTES_COMPARATOR); columns.add(qualifier); scan.setTimeRange(20, 100); assertTrue(scanner.shouldUseScanner(scan, columns, Long.MIN_VALUE)); scan.setTimeRange(1, 2); assertTrue(scanner.shouldUseScanner(scan, columns, Long.MIN_VALUE)); scan.setTimeRange(8, 10); assertTrue(scanner.shouldUseScanner(scan, columns, Long.MIN_VALUE)); scan.setTimeRange(7, 50); assertTrue(scanner.shouldUseScanner(scan, columns, Long.MIN_VALUE)); // This test relies on the timestamp range optimization scan.setTimeRange(27, 50); assertTrue(!scanner.shouldUseScanner(scan, columns, Long.MIN_VALUE)); } public void testCacheOnWriteEvictOnClose() throws Exception { Configuration conf = this.conf; // Find a home for our files (regiondir ("7e0102") and familyname). Path baseDir = new Path(new Path(this.testDir, "7e0102"), "twoCOWEOC"); // Grab the block cache and get the initial hit/miss counts BlockCache bc = new CacheConfig(conf).getBlockCache(); assertNotNull(bc); CacheStats cs = bc.getStats(); long startHit = cs.getHitCount(); long startMiss = cs.getMissCount(); long startEvicted = cs.getEvictedCount(); // Let's write a StoreFile with three blocks, with cache on write off conf.setBoolean(CacheConfig.CACHE_BLOCKS_ON_WRITE_KEY, false); CacheConfig cacheConf = new CacheConfig(conf); Path pathCowOff = new Path(baseDir, "123456789"); StoreFile.Writer writer = writeStoreFile(conf, cacheConf, pathCowOff, 3); StoreFile hsf = new StoreFile(this.fs, writer.getPath(), conf, cacheConf, BloomType.NONE); LOG.debug(hsf.getPath().toString()); // Read this file, we should see 3 misses StoreFile.Reader reader = hsf.createReader(); reader.loadFileInfo(); StoreFileScanner scanner = reader.getStoreFileScanner(true, true); scanner.seek(KeyValue.LOWESTKEY); while (scanner.next() != null) ; assertEquals(startHit, cs.getHitCount()); assertEquals(startMiss + 3, cs.getMissCount()); assertEquals(startEvicted, cs.getEvictedCount()); startMiss += 3; scanner.close(); reader.close(cacheConf.shouldEvictOnClose()); // Now write a StoreFile with three blocks, with cache on write on conf.setBoolean(CacheConfig.CACHE_BLOCKS_ON_WRITE_KEY, true); cacheConf = new CacheConfig(conf); Path pathCowOn = new Path(baseDir, "123456788"); writer = writeStoreFile(conf, cacheConf, pathCowOn, 3); hsf = new StoreFile(this.fs, writer.getPath(), conf, cacheConf, BloomType.NONE); // Read this file, we should see 3 hits reader = hsf.createReader(); scanner = reader.getStoreFileScanner(true, true); scanner.seek(KeyValue.LOWESTKEY); while (scanner.next() != null) ; assertEquals(startHit + 3, cs.getHitCount()); assertEquals(startMiss, cs.getMissCount()); assertEquals(startEvicted, cs.getEvictedCount()); startHit += 3; scanner.close(); reader.close(cacheConf.shouldEvictOnClose()); // Let's read back the two files to ensure the blocks exactly match hsf = new StoreFile(this.fs, pathCowOff, conf, cacheConf, BloomType.NONE); StoreFile.Reader readerOne = hsf.createReader(); readerOne.loadFileInfo(); StoreFileScanner scannerOne = readerOne.getStoreFileScanner(true, true); scannerOne.seek(KeyValue.LOWESTKEY); hsf = new StoreFile(this.fs, pathCowOn, conf, cacheConf, BloomType.NONE); StoreFile.Reader readerTwo = hsf.createReader(); readerTwo.loadFileInfo(); StoreFileScanner scannerTwo = readerTwo.getStoreFileScanner(true, true); scannerTwo.seek(KeyValue.LOWESTKEY); Cell kv1 = null; Cell kv2 = null; while ((kv1 = scannerOne.next()) != null) { kv2 = scannerTwo.next(); assertTrue(kv1.equals(kv2)); KeyValue keyv1 = KeyValueUtil.ensureKeyValue(kv1); KeyValue keyv2 = KeyValueUtil.ensureKeyValue(kv2); assertTrue(Bytes.compareTo(keyv1.getBuffer(), keyv1.getKeyOffset(), keyv1.getKeyLength(), keyv2.getBuffer(), keyv2.getKeyOffset(), keyv2.getKeyLength()) == 0); assertTrue(Bytes.compareTo(kv1.getValueArray(), kv1.getValueOffset(), kv1.getValueLength(), kv2.getValueArray(), kv2.getValueOffset(), kv2.getValueLength()) == 0); } assertNull(scannerTwo.next()); assertEquals(startHit + 6, cs.getHitCount()); assertEquals(startMiss, cs.getMissCount()); assertEquals(startEvicted, cs.getEvictedCount()); startHit += 6; scannerOne.close(); readerOne.close(cacheConf.shouldEvictOnClose()); scannerTwo.close(); readerTwo.close(cacheConf.shouldEvictOnClose()); // Let's close the first file with evict on close turned on conf.setBoolean("hbase.rs.evictblocksonclose", true); cacheConf = new CacheConfig(conf); hsf = new StoreFile(this.fs, pathCowOff, conf, cacheConf, BloomType.NONE); reader = hsf.createReader(); reader.close(cacheConf.shouldEvictOnClose()); // We should have 3 new evictions assertEquals(startHit, cs.getHitCount()); assertEquals(startMiss, cs.getMissCount()); assertEquals(startEvicted + 3, cs.getEvictedCount()); startEvicted += 3; // Let's close the second file with evict on close turned off conf.setBoolean("hbase.rs.evictblocksonclose", false); cacheConf = new CacheConfig(conf); hsf = new StoreFile(this.fs, pathCowOn, conf, cacheConf, BloomType.NONE); reader = hsf.createReader(); reader.close(cacheConf.shouldEvictOnClose()); // We expect no changes assertEquals(startHit, cs.getHitCount()); assertEquals(startMiss, cs.getMissCount()); assertEquals(startEvicted, cs.getEvictedCount()); } private Path splitStoreFile(final HRegionFileSystem regionFs, final HRegionInfo hri, final String family, final StoreFile sf, final byte[] splitKey, boolean isTopRef) throws IOException { FileSystem fs = regionFs.getFileSystem(); Path path = regionFs.splitStoreFile(hri, family, sf, splitKey, isTopRef); if (null == path) { return null; } Path regionDir = regionFs.commitDaughterRegion(hri); return new Path(new Path(regionDir, family), path.getName()); } private StoreFile.Writer writeStoreFile(Configuration conf, CacheConfig cacheConf, Path path, int numBlocks) throws IOException { // Let's put ~5 small KVs in each block, so let's make 5*numBlocks KVs int numKVs = 5 * numBlocks; List<KeyValue> kvs = new ArrayList<KeyValue>(numKVs); byte[] b = Bytes.toBytes("x"); int totalSize = 0; for (int i = numKVs; i > 0; i--) { KeyValue kv = new KeyValue(b, b, b, i, b); kvs.add(kv); // kv has memstoreTS 0, which takes 1 byte to store. totalSize += kv.getLength() + 1; } int blockSize = totalSize / numBlocks; HFileContext meta = new HFileContextBuilder().withBlockSize(blockSize).withChecksumType(CKTYPE) .withBytesPerCheckSum(CKBYTES).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs).withFilePath(path) .withMaxKeyCount(2000).withFileContext(meta).build(); // We'll write N-1 KVs to ensure we don't write an extra block kvs.remove(kvs.size() - 1); for (KeyValue kv : kvs) { writer.append(kv); } writer.appendMetadata(0, false); writer.close(); return writer; } /** * Check if data block encoding information is saved correctly in HFile's * file info. */ public void testDataBlockEncodingMetaData() throws IOException { // Make up a directory hierarchy that has a regiondir ("7e0102") and familyname. Path dir = new Path(new Path(this.testDir, "7e0102"), "familyname"); Path path = new Path(dir, "1234567890"); DataBlockEncoding dataBlockEncoderAlgo = DataBlockEncoding.FAST_DIFF; HFileDataBlockEncoder dataBlockEncoder = new HFileDataBlockEncoderImpl(dataBlockEncoderAlgo); cacheConf = new CacheConfig(conf); HFileContext meta = new HFileContextBuilder().withBlockSize(BLOCKSIZE_SMALL).withChecksumType(CKTYPE) .withBytesPerCheckSum(CKBYTES).withDataBlockEncoding(dataBlockEncoderAlgo).build(); // Make a store file and write data to it. StoreFile.Writer writer = new StoreFile.WriterBuilder(conf, cacheConf, this.fs).withFilePath(path) .withMaxKeyCount(2000).withFileContext(meta).build(); writer.close(); StoreFile storeFile = new StoreFile(fs, writer.getPath(), conf, cacheConf, BloomType.NONE); StoreFile.Reader reader = storeFile.createReader(); Map<byte[], byte[]> fileInfo = reader.loadFileInfo(); byte[] value = fileInfo.get(HFileDataBlockEncoder.DATA_BLOCK_ENCODING); assertEquals(dataBlockEncoderAlgo.getNameInBytes(), value); } }