Examples with HRegion org.apache.hadoop.hbase.regionserver.HRegion used on opensource projects

Example 56 with HRegion

use of org.apache.hadoop.hbase.regionserver.HRegion in project cdap by caskdata.

the class IncrementSummingScannerTest method testFlushAndCompact.

@Test
public void testFlushAndCompact() throws Exception {
    TableId tableId = TableId.from(NamespaceId.DEFAULT.getNamespace(), "TestFlushAndCompact");
    byte[] familyBytes = Bytes.toBytes("f");
    byte[] columnBytes = Bytes.toBytes("c");
    HRegion region = createRegion(tableId, familyBytes);
    try {
        region.initialize();
        // load an initial set of increments
        long ts = System.currentTimeMillis();
        byte[] row1 = Bytes.toBytes("row1");
        for (int i = 0; i < 50; i++) {
            Put p = new Put(row1);
            p.add(familyBytes, columnBytes, ts, Bytes.toBytes(1L));
            p.setAttribute(HBaseTable.DELTA_WRITE, TRUE);
            ts++;
            region.put(p);
        }
        byte[] row2 = Bytes.toBytes("row2");
        ts = System.currentTimeMillis();
        // start with a full put
        Put row2P = new Put(row2);
        row2P.add(familyBytes, columnBytes, ts++, Bytes.toBytes(10L));
        region.put(row2P);
        for (int i = 0; i < 10; i++) {
            Put p = new Put(row2);
            p.add(familyBytes, columnBytes, ts++, Bytes.toBytes(1L));
            p.setAttribute(HBaseTable.DELTA_WRITE, TRUE);
            region.put(p);
        }
        // force a region flush
        region.flushcache();
        region.waitForFlushesAndCompactions();
        Result r1 = region.get(new Get(row1));
        assertNotNull(r1);
        assertFalse(r1.isEmpty());
        // row1 should have a full put aggregating all 50 incrments
        Cell r1Cell = r1.getColumnLatestCell(familyBytes, columnBytes);
        assertNotNull(r1Cell);
        assertEquals(50L, Bytes.toLong(r1Cell.getValue()));
        Result r2 = region.get(new Get(row2));
        assertNotNull(r2);
        assertFalse(r2.isEmpty());
        // row2 should have a full put aggregating prior put + 10 increments
        Cell r2Cell = r2.getColumnLatestCell(familyBytes, columnBytes);
        assertNotNull(r2Cell);
        assertEquals(20L, Bytes.toLong(r2Cell.getValue()));
        // add 30 more increments to row2
        for (int i = 0; i < 30; i++) {
            Put p = new Put(row2);
            p.add(familyBytes, columnBytes, ts++, Bytes.toBytes(1L));
            p.setAttribute(HBaseTable.DELTA_WRITE, TRUE);
            region.put(p);
        }
        // row2 should now have a full put aggregating prior 20 value + 30 increments
        r2 = region.get(new Get(row2));
        assertNotNull(r2);
        assertFalse(r2.isEmpty());
        r2Cell = r2.getColumnLatestCell(familyBytes, columnBytes);
        assertNotNull(r2Cell);
        assertEquals(50L, Bytes.toLong(r2Cell.getValue()));
        // force another region flush
        region.flushcache();
        region.waitForFlushesAndCompactions();
        // add 100 more increments to row2
        for (int i = 0; i < 100; i++) {
            Put p = new Put(row2);
            p.add(familyBytes, columnBytes, ts++, Bytes.toBytes(1L));
            p.setAttribute(HBaseTable.DELTA_WRITE, TRUE);
            region.put(p);
        }
        // row2 should now have a full put aggregating prior 50 value + 100 increments
        r2 = region.get(new Get(row2));
        assertNotNull(r2);
        assertFalse(r2.isEmpty());
        r2Cell = r2.getColumnLatestCell(familyBytes, columnBytes);
        assertNotNull(r2Cell);
        assertEquals(150L, Bytes.toLong(r2Cell.getValue()));
    } finally {
        region.close();
    }
}

Example 57 with HRegion

use of org.apache.hadoop.hbase.regionserver.HRegion in project cdap by caskdata.

the class IncrementSummingScannerTest method createRegion.

static HRegion createRegion(Configuration hConf, CConfiguration cConf, TableId tableId, HColumnDescriptor cfd) throws Exception {
    HBaseTableUtil tableUtil = new HBaseTableUtilFactory(cConf).get();
    HTableDescriptorBuilder htd = tableUtil.buildHTableDescriptor(tableId);
    cfd.setMaxVersions(Integer.MAX_VALUE);
    cfd.setKeepDeletedCells(true);
    htd.addFamily(cfd);
    htd.addCoprocessor(IncrementHandler.class.getName());
    HTableDescriptor desc = htd.build();
    String tableName = desc.getNameAsString();
    Path tablePath = new Path("/tmp/" + tableName);
    Path hlogPath = new Path("/tmp/hlog-" + tableName);
    FileSystem fs = FileSystem.get(hConf);
    assertTrue(fs.mkdirs(tablePath));
    HLog hLog = HLogFactory.createHLog(fs, hlogPath, tableName, hConf);
    HRegionInfo regionInfo = new HRegionInfo(desc.getTableName());
    HRegionFileSystem regionFS = HRegionFileSystem.createRegionOnFileSystem(hConf, fs, tablePath, regionInfo);
    return new HRegion(regionFS, hLog, hConf, desc, new MockRegionServerServices(hConf, null));
}

Example 58 with HRegion

use of org.apache.hadoop.hbase.regionserver.HRegion in project cdap by caskdata.

the class HBase10Test method forEachRegion.

@Override
public <T> Map<byte[], T> forEachRegion(byte[] tableName, Function<HRegion, T> function) {
    MiniHBaseCluster hbaseCluster = getHBaseCluster();
    Map<byte[], T> results = new TreeMap<>(Bytes.BYTES_COMPARATOR);
    // make sure consumer config cache is updated
    for (JVMClusterUtil.RegionServerThread t : hbaseCluster.getRegionServerThreads()) {
        List<HRegion> serverRegions = t.getRegionServer().getOnlineRegions(TableName.valueOf(tableName));
        for (HRegion region : serverRegions) {
            results.put(region.getRegionName(), function.apply(region));
        }
    }
    return results;
}

Example 59 with HRegion

use of org.apache.hadoop.hbase.regionserver.HRegion in project cdap by caskdata.

the class MessageTableRegionObserver method postFlush.

@Override
public void postFlush(ObserverContext<RegionCoprocessorEnvironment> e) throws IOException {
    // Record whether the region is empty after a flush
    HRegion region = e.getEnvironment().getRegion();
    // After a flush, if the memstore size is zero and there are no store files for any stores in the region
    // then the region must be empty
    long numStoreFiles = numStoreFilesForRegion(e);
    long memstoreSize = region.getMemstoreSize().get();
    LOG.debug(String.format("Region %s: memstore size = %s, num store files = %s", region.getRegionInfo().getRegionNameAsString(), memstoreSize, numStoreFiles));
    if (memstoreSize == 0 && numStoreFiles == 0) {
        if (compactionState != null) {
            compactionState.persistRegionEmpty(System.currentTimeMillis());
        }
    }
}

Example 60 with HRegion

use of org.apache.hadoop.hbase.regionserver.HRegion in project cdap by caskdata.

the class IncrementSummingScannerTest method testMultiColumnFlushAndCompact.

@Test
public void testMultiColumnFlushAndCompact() throws Exception {
    TableId tableId = TableId.from(NamespaceId.DEFAULT.getNamespace(), "testMultiColumnFlushAndCompact");
    byte[] familyBytes = Bytes.toBytes("f");
    byte[] columnBytes = Bytes.toBytes("c");
    byte[] columnBytes2 = Bytes.toBytes("c2");
    HRegion region = createRegion(tableId, familyBytes);
    try {
        region.initialize();
        long now = 1;
        byte[] row1 = Bytes.toBytes("row1");
        byte[] row2 = Bytes.toBytes("row2");
        // Initial put to row1,c2
        Put row1P = new Put(row1);
        row1P.add(familyBytes, columnBytes2, now - 1, Bytes.toBytes(5L));
        region.put(row1P);
        // Initial put to row2,c
        Put row2P = new Put(row2);
        row2P.add(familyBytes, columnBytes, now - 1, Bytes.toBytes(10L));
        region.put(row2P);
        // Generate some increments
        long ts = now;
        for (int i = 0; i < 50; i++) {
            region.put(generateIncrementPut(familyBytes, columnBytes, row1, ts));
            region.put(generateIncrementPut(familyBytes, columnBytes, row2, ts));
            region.put(generateIncrementPut(familyBytes, columnBytes2, row1, ts));
            ts++;
        }
        // First scanner represents flush scanner
        RegionScanner scanner = new IncrementSummingScanner(region, -1, region.getScanner(new Scan().setMaxVersions()), ScanType.COMPACT_RETAIN_DELETES, now + 15, -1);
        // Second scanner is a user scan, this is to help in easy asserts
        scanner = new IncrementSummingScanner(region, -1, scanner, ScanType.USER_SCAN);
        List<Cell> results = Lists.newArrayList();
        assertTrue(scanner.next(results, 10));
        assertEquals(2, results.size());
        Cell cell = results.get(0);
        assertNotNull(cell);
        assertEquals("row1", Bytes.toString(cell.getRow()));
        assertEquals("c", Bytes.toString(cell.getQualifier()));
        assertEquals(50, Bytes.toLong(cell.getValue()));
        cell = results.get(1);
        assertNotNull(cell);
        assertEquals("row1", Bytes.toString(cell.getRow()));
        assertEquals("c2", Bytes.toString(cell.getQualifier()));
        assertEquals(55, Bytes.toLong(cell.getValue()));
        results.clear();
        assertFalse(scanner.next(results, 10));
        assertEquals(1, results.size());
        cell = results.get(0);
        assertNotNull(cell);
        assertEquals("row2", Bytes.toString(cell.getRow()));
        assertEquals(60, Bytes.toLong(cell.getValue()));
    } finally {
        region.close();
    }
}