Examples with BufferingTable co.cask.cdap.data2.dataset2.lib.table.BufferingTable used on opensource projects

Example 1 with BufferingTable

use of co.cask.cdap.data2.dataset2.lib.table.BufferingTable in project cdap by caskdata.

the class HBaseTableTest method testColumnFamily.

@Test
public void testColumnFamily() throws Exception {
    DatasetProperties props = TableProperties.builder().setColumnFamily("t").build();
    String tableName = "testcf";
    DatasetAdmin admin = getTableAdmin(CONTEXT1, tableName, props);
    admin.create();
    final BufferingTable table = getTable(CONTEXT1, tableName, props);
    TransactionSystemClient txClient = new DetachedTxSystemClient();
    TransactionExecutor executor = new DefaultTransactionExecutor(txClient, table);
    executor.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            table.put(new Put("row", "column", "testValue"));
        }
    });
    final BufferingTable table2 = getTable(CONTEXT1, tableName, props);
    executor = new DefaultTransactionExecutor(txClient, table2);
    executor.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            Assert.assertEquals("testValue", table2.get(new Get("row", "column")).getString("column"));
        }
    });
    // Verify the column family name
    TableId hTableId = hBaseTableUtil.createHTableId(new NamespaceId(CONTEXT1.getNamespaceId()), tableName);
    HTableDescriptor htd = hBaseTableUtil.getHTableDescriptor(TEST_HBASE.getHBaseAdmin(), hTableId);
    HColumnDescriptor hcd = htd.getFamily(Bytes.toBytes("t"));
    Assert.assertNotNull(hcd);
    Assert.assertEquals("t", hcd.getNameAsString());
}

Example 2 with BufferingTable

use of co.cask.cdap.data2.dataset2.lib.table.BufferingTable in project cdap by caskdata.

the class HBaseTableTest method testEnableIncrements.

@Test
public void testEnableIncrements() throws Exception {
    // setup a table with increments disabled and with it enabled
    String disableTableName = "incr-disable";
    String enabledTableName = "incr-enable";
    TableId disabledTableId = hBaseTableUtil.createHTableId(NAMESPACE1, disableTableName);
    TableId enabledTableId = hBaseTableUtil.createHTableId(NAMESPACE1, enabledTableName);
    DatasetProperties propsDisabled = TableProperties.builder().setReadlessIncrementSupport(false).setConflictDetection(ConflictDetection.COLUMN).build();
    HBaseTableAdmin disabledAdmin = getTableAdmin(CONTEXT1, disableTableName, propsDisabled);
    disabledAdmin.create();
    HBaseAdmin admin = TEST_HBASE.getHBaseAdmin();
    DatasetProperties propsEnabled = TableProperties.builder().setReadlessIncrementSupport(true).setConflictDetection(ConflictDetection.COLUMN).build();
    HBaseTableAdmin enabledAdmin = getTableAdmin(CONTEXT1, enabledTableName, propsEnabled);
    enabledAdmin.create();
    try {
        try {
            HTableDescriptor htd = hBaseTableUtil.getHTableDescriptor(admin, disabledTableId);
            List<String> cps = htd.getCoprocessors();
            assertFalse(cps.contains(IncrementHandler.class.getName()));
            htd = hBaseTableUtil.getHTableDescriptor(admin, enabledTableId);
            cps = htd.getCoprocessors();
            assertTrue(cps.contains(IncrementHandler.class.getName()));
        } finally {
            admin.close();
        }
        BufferingTable table = getTable(CONTEXT1, enabledTableName, propsEnabled);
        byte[] row = Bytes.toBytes("row1");
        byte[] col = Bytes.toBytes("col1");
        DetachedTxSystemClient txSystemClient = new DetachedTxSystemClient();
        Transaction tx = txSystemClient.startShort();
        table.startTx(tx);
        table.increment(row, col, 10);
        table.commitTx();
        // verify that value was written as a delta value
        final byte[] expectedValue = Bytes.add(IncrementHandlerState.DELTA_MAGIC_PREFIX, Bytes.toBytes(10L));
        final AtomicBoolean foundValue = new AtomicBoolean();
        byte[] enabledTableNameBytes = hBaseTableUtil.getHTableDescriptor(admin, enabledTableId).getName();
        TEST_HBASE.forEachRegion(enabledTableNameBytes, new Function<HRegion, Object>() {

            @Override
            public Object apply(HRegion hRegion) {
                org.apache.hadoop.hbase.client.Scan scan = hBaseTableUtil.buildScan().build();
                try {
                    RegionScanner scanner = hRegion.getScanner(scan);
                    List<Cell> results = Lists.newArrayList();
                    boolean hasMore;
                    do {
                        hasMore = scanner.next(results);
                        for (Cell cell : results) {
                            if (CellUtil.matchingValue(cell, expectedValue)) {
                                foundValue.set(true);
                            }
                        }
                    } while (hasMore);
                } catch (IOException ioe) {
                    fail("IOException scanning region: " + ioe.getMessage());
                }
                return null;
            }
        });
        assertTrue("Should have seen the expected encoded delta value in the " + enabledTableName + " table region", foundValue.get());
    } finally {
        disabledAdmin.drop();
        enabledAdmin.drop();
    }
}