Java Code Examples for org.apache.hadoop.hbase.client.Admin#deleteColumnFamily()

@Test
public void testDeleteColumn() throws IOException {
  Admin admin = TEST_UTIL.getAdmin();
  // Create a table with two families
  TableDescriptorBuilder.ModifyableTableDescriptor tableDescriptor =
    new TableDescriptorBuilder.ModifyableTableDescriptor(TABLE_NAME);

  tableDescriptor.setColumnFamily(
    new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(FAMILY_0));
  tableDescriptor.setColumnFamily(
    new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(FAMILY_1));
  admin.createTable(tableDescriptor);
  admin.disableTable(TABLE_NAME);
  try {
    // Verify the table descriptor
    verifyTableDescriptor(TABLE_NAME, FAMILY_0, FAMILY_1);

    // Modify the table removing one family and verify the descriptor
    admin.deleteColumnFamily(TABLE_NAME, FAMILY_1);
    verifyTableDescriptor(TABLE_NAME, FAMILY_0);
  } finally {
    admin.deleteTable(TABLE_NAME);
  }
}
 

@Test
public void testDeleteSameColumnFamilyTwice() throws IOException {
  Admin admin = TEST_UTIL.getAdmin();
  // Create a table with two families
  TableDescriptorBuilder.ModifyableTableDescriptor tableDescriptor =
    new TableDescriptorBuilder.ModifyableTableDescriptor(TABLE_NAME);

  tableDescriptor.setColumnFamily(
    new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(FAMILY_0));
  tableDescriptor.setColumnFamily(
    new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(FAMILY_1));
  admin.createTable(tableDescriptor);
  admin.disableTable(TABLE_NAME);
  try {
    // Verify the table descriptor
    verifyTableDescriptor(TABLE_NAME, FAMILY_0, FAMILY_1);

    // Modify the table removing one family and verify the descriptor
    admin.deleteColumnFamily(TABLE_NAME, FAMILY_1);
    verifyTableDescriptor(TABLE_NAME, FAMILY_0);

    try {
      // Delete again - expect failure
      admin.deleteColumnFamily(TABLE_NAME, FAMILY_1);
      Assert.fail("Delete a non-exist column family should fail");
    } catch (Exception e) {
      // Expected.
    }
  } finally {
    admin.deleteTable(TABLE_NAME);
  }
}
 

@Override
void perform() throws IOException {
  TableDescriptor selected = selectTable(disabledTables);
  ColumnFamilyDescriptor cfd = selectFamily(selected);
  if (selected == null || cfd == null) {
    return;
  }

  Admin admin = connection.getAdmin();
  try {
    if (selected.getColumnFamilyCount() < 2) {
      LOG.info("No enough column families to delete in table " + selected.getTableName());
      return;
    }
    TableName tableName = selected.getTableName();
    LOG.info("Deleting column family: " + cfd + " from table: " + tableName);
    admin.deleteColumnFamily(tableName, cfd.getName());
    // assertion
    TableDescriptor freshTableDesc = admin.getDescriptor(tableName);
    Assert.assertFalse("Column family: " + cfd + " was not added",
        freshTableDesc.hasColumnFamily(cfd.getName()));
    Assert.assertTrue(
      "After delete column family, Table: " + tableName + " is not disabled",
      admin.isTableDisabled(tableName));
    disabledTables.put(tableName, freshTableDesc);
    LOG.info("Deleted column family: " + cfd + " from table: " + tableName);
  } catch (Exception e) {
    LOG.warn("Caught exception in action: " + this.getClass());
    throw e;
  } finally {
    admin.close();
  }
}
 

/**
 * Set versions, set HBASE-16213 indexed block encoding, and add a column family.
 * Delete the column family. Then try to delete a core hbase:meta family (should fail).
 * Verify they are all in place by looking at TableDescriptor AND by checking
 * what the RegionServer sees after opening Region.
 */
@Test
public void testEditMeta() throws IOException {
  Admin admin = UTIL.getAdmin();
  admin.tableExists(TableName.META_TABLE_NAME);
  TableDescriptor originalDescriptor = getMetaDescriptor();
  ColumnFamilyDescriptor cfd = originalDescriptor.getColumnFamily(HConstants.CATALOG_FAMILY);
  int oldVersions = cfd.getMaxVersions();
  // Add '1' to current versions count. Set encoding too.
  cfd = ColumnFamilyDescriptorBuilder.newBuilder(cfd).setMaxVersions(oldVersions + 1).
      setConfiguration(ColumnFamilyDescriptorBuilder.DATA_BLOCK_ENCODING,
          DataBlockEncoding.ROW_INDEX_V1.toString()).build();
  admin.modifyColumnFamily(TableName.META_TABLE_NAME, cfd);
  byte [] extraColumnFamilyName = Bytes.toBytes("xtra");
  ColumnFamilyDescriptor newCfd =
    ColumnFamilyDescriptorBuilder.newBuilder(extraColumnFamilyName).build();
  admin.addColumnFamily(TableName.META_TABLE_NAME, newCfd);
  TableDescriptor descriptor = getMetaDescriptor();
  // Assert new max versions is == old versions plus 1.
  assertEquals(oldVersions + 1,
      descriptor.getColumnFamily(HConstants.CATALOG_FAMILY).getMaxVersions());
  descriptor = getMetaDescriptor();
  // Assert new max versions is == old versions plus 1.
  assertEquals(oldVersions + 1,
      descriptor.getColumnFamily(HConstants.CATALOG_FAMILY).getMaxVersions());
  assertTrue(descriptor.getColumnFamily(newCfd.getName()) != null);
  String encoding = descriptor.getColumnFamily(HConstants.CATALOG_FAMILY).getConfiguration().
      get(ColumnFamilyDescriptorBuilder.DATA_BLOCK_ENCODING);
  assertEquals(encoding, DataBlockEncoding.ROW_INDEX_V1.toString());
  Region r = UTIL.getHBaseCluster().getRegionServer(0).
      getRegion(RegionInfoBuilder.FIRST_META_REGIONINFO.getEncodedName());
  assertEquals(oldVersions + 1,
      r.getStore(HConstants.CATALOG_FAMILY).getColumnFamilyDescriptor().getMaxVersions());
  encoding = r.getStore(HConstants.CATALOG_FAMILY).getColumnFamilyDescriptor().
      getConfigurationValue(ColumnFamilyDescriptorBuilder.DATA_BLOCK_ENCODING);
  assertEquals(encoding, DataBlockEncoding.ROW_INDEX_V1.toString());
  assertTrue(r.getStore(extraColumnFamilyName) != null);
  // Assert we can't drop critical hbase:meta column family but we can drop any other.
  admin.deleteColumnFamily(TableName.META_TABLE_NAME, newCfd.getName());
  descriptor = getMetaDescriptor();
  assertTrue(descriptor.getColumnFamily(newCfd.getName()) == null);
  try {
    admin.deleteColumnFamily(TableName.META_TABLE_NAME, HConstants.CATALOG_FAMILY);
    fail("Should not reach here");
  } catch (HBaseIOException hioe) {
    assertTrue(hioe.getMessage().contains("Delete of hbase:meta"));
  }
}
 

private void setupSnapshotAndUpdateTable() throws Exception {
  long tid = System.currentTimeMillis();
  final String snapshotName = "snapshot-" + tid;
  Admin admin = UTIL.getAdmin();
  // create Table
  SnapshotTestingUtils.createTable(UTIL, snapshotTableName, getNumReplicas(), CF1, CF2);
  // Load data
  SnapshotTestingUtils.loadData(UTIL, snapshotTableName, rowCountCF1, CF1);
  SnapshotTestingUtils.loadData(UTIL, snapshotTableName, rowCountCF2, CF2);
  SnapshotTestingUtils.verifyRowCount(UTIL, snapshotTableName, rowCountCF1 + rowCountCF2);

  snapshotHTD = admin.getDescriptor(snapshotTableName);

  admin.disableTable(snapshotTableName);
  // take a snapshot
  admin.snapshot(snapshotName, snapshotTableName);

  List<SnapshotDescription> snapshotList = admin.listSnapshots();
  snapshot = ProtobufUtil.createHBaseProtosSnapshotDesc(snapshotList.get(0));

  // modify the table
  ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor columnFamilyDescriptor3 =
    new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(CF3);
  ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor columnFamilyDescriptor4 =
    new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(CF4);
  admin.addColumnFamily(snapshotTableName, columnFamilyDescriptor3);
  admin.addColumnFamily(snapshotTableName, columnFamilyDescriptor4);
  admin.deleteColumnFamily(snapshotTableName, CF2);
  // enable table and insert data
  admin.enableTable(snapshotTableName);
  SnapshotTestingUtils.loadData(UTIL, snapshotTableName, rowCountCF3, CF3);
  SnapshotTestingUtils.loadData(UTIL, snapshotTableName, rowCountCF4, CF4);
  SnapshotTestingUtils.loadData(UTIL, snapshotTableName, rowCountCF1addition, CF1);
  HTableDescriptor currentHTD = new HTableDescriptor(admin.getDescriptor(snapshotTableName));
  assertTrue(currentHTD.hasFamily(CF1));
  assertFalse(currentHTD.hasFamily(CF2));
  assertTrue(currentHTD.hasFamily(CF3));
  assertTrue(currentHTD.hasFamily(CF4));
  assertNotEquals(currentHTD.getFamiliesKeys().size(), snapshotHTD.getColumnFamilies().length);
  SnapshotTestingUtils.verifyRowCount(
    UTIL, snapshotTableName, rowCountCF1 + rowCountCF3 + rowCountCF4 + rowCountCF1addition);
  admin.disableTable(snapshotTableName);
}