Java Table類代碼示例

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
private Table createPartitionedTable(String databaseName, String tableName) throws Exception {
  Table table = new Table();
  table.setDbName(DATABASE);
  table.setTableName(tableName);
  table.setPartitionKeys(Arrays.asList(new FieldSchema("partcol", "int", null)));
  table.setSd(new StorageDescriptor());
  table.getSd().setCols(Arrays.asList(new FieldSchema("id", "int", null), new FieldSchema("name", "string", null)));
  table.getSd().setInputFormat("org.apache.hadoop.mapred.TextInputFormat");
  table.getSd().setOutputFormat("org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat");
  table.getSd().setSerdeInfo(new SerDeInfo());
  table.getSd().getSerdeInfo().setSerializationLib("org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe");
  HiveMetaStoreClient client = server.newClient();
  client.createTable(table);
  client.close();
  return table;
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
public HiveTextRecordReader(Table table, Partition partition, InputSplit inputSplit, List<SchemaPath> projectedColumns, FragmentContext context) throws ExecutionSetupException {
  super(table, partition, inputSplit, projectedColumns, context, null);
  String d = table.getSd().getSerdeInfo().getParameters().get("field.delim");
  if (d != null) {
    delimiter = d.getBytes()[0];
  } else {
    delimiter = (byte) 1;
  }
  assert delimiter > 0;
  List<Integer> ids = Lists.newArrayList();
  for (int i = 0; i < tableColumns.size(); i++) {
    if (selectedColumnNames.contains(tableColumns.get(i))) {
      ids.add(i);
    }
  }
  columnIds = ids;
  numCols = tableColumns.size();
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
void createPartitionedTable(URI sourceTableUri) throws Exception {
  Table hiveTable = TestUtils.createPartitionedTable(metaStoreClient, DATABASE, SOURCE_PARTITIONED_TABLE,
      sourceTableUri);

  URI partitionEurope = URI.create(sourceTableUri + "/continent=Europe");
  URI partitionUk = URI.create(partitionEurope + "/country=UK");
  File dataFileUk = new File(partitionUk.getPath(), PART_00000);
  FileUtils.writeStringToFile(dataFileUk, "1\tadam\tlondon\n2\tsusan\tglasgow\n");

  URI partitionAsia = URI.create(sourceTableUri + "/continent=Asia");
  URI partitionChina = URI.create(partitionAsia + "/country=China");
  File dataFileChina = new File(partitionChina.getPath(), PART_00000);
  FileUtils.writeStringToFile(dataFileChina, "1\tchun\tbeijing\n2\tshanghai\tmilan\n");
  LOG.info(">>>> Partitions added: {}",
      metaStoreClient
          .add_partitions(Arrays.asList(newTablePartition(hiveTable, Arrays.asList("Europe", "UK"), partitionUk),
              newTablePartition(hiveTable, Arrays.asList("Asia", "China"), partitionChina))));
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
@Test
public void tablesMatchEachOther() throws Exception {
  Table sourceTable = catalog.client().getTable(DATABASE, SOURCE_TABLE);
  Table replicaTable = catalog.client().getTable(DATABASE, REPLICA_TABLE);

  HiveDifferences
      .builder(diffListener)
      .comparatorRegistry(comparatorRegistry)
      .source(configuration, sourceTable, new PartitionIterator(catalog.client(), sourceTable, PARTITION_BATCH_SIZE))
      .replica(Optional.of(replicaTable),
          Optional.of(new BufferedPartitionFetcher(catalog.client(), replicaTable, PARTITION_BATCH_SIZE)))
      .checksumFunction(checksumFunction)
      .build()
      .run();
  verify(diffListener, never()).onChangedTable(anyList());
  verify(diffListener, never()).onNewPartition(anyString(), any(Partition.class));
  verify(diffListener, never()).onChangedPartition(anyString(), any(Partition.class), anyList());
  verify(diffListener, never()).onDataChanged(anyString(), any(Partition.class));
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
public void updateMetadata(
    String eventId,
    TableAndStatistics sourceTable,
    String replicaDatabaseName,
    String replicaTableName,
    ReplicaLocationManager locationManager) {
  try (CloseableMetaStoreClient client = getMetaStoreClientSupplier().get()) {
    Optional<Table> oldReplicaTable = updateTableMetadata(client, eventId, sourceTable, replicaDatabaseName,
        replicaTableName, locationManager.getTableLocation(), replicationMode);
    if (oldReplicaTable.isPresent() && LocationUtils.hasLocation(oldReplicaTable.get())) {
      Path oldLocation = locationAsPath(oldReplicaTable.get());
      String oldEventId = oldReplicaTable.get().getParameters().get(REPLICATION_EVENT.parameterName());
      locationManager.addCleanUpLocation(oldEventId, oldLocation);
    }
  }
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
public HiveTable(Table table) {
  if (table == null) {
    return;
  }
  this.table = table;
  this.tableName = table.getTableName();
  this.dbName = table.getDbName();
  this.owner = table.getOwner();
  this.createTime = table.getCreateTime();
  this.lastAccessTime = table.getLastAccessTime();
  this.retention = table.getRetention();
  this.sd = new StorageDescriptorWrapper(table.getSd());
  this.partitionKeys = Lists.newArrayList();
  for (FieldSchema f : table.getPartitionKeys()) {
    this.partitionKeys.add(new FieldSchemaWrapper(f));
    partitionNameTypeMap.put(f.getName(), f.getType());
  }
  this.parameters = table.getParameters();
  this.viewOriginalText = table.getViewOriginalText();
  this.viewExpandedText = table.getViewExpandedText();
  this.tableType = table.getTableType();
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
@Override
public void replicate() throws CircusTrainException {
  try {
    replica.validateReplicaTable(replicaDatabaseName, replicaTableName);
    TableAndStatistics sourceTableAndStatistics = source.getTableAndStatistics(database, table);
    Table sourceTable = sourceTableAndStatistics.getTable();
    SourceLocationManager sourceLocationManager = source.getLocationManager(sourceTable, eventId);
    ReplicaLocationManager replicaLocationManager = new MetadataMirrorReplicaLocationManager(sourceLocationManager,
        TableType.UNPARTITIONED);

    sourceLocationManager.cleanUpLocations();
    replica.updateMetadata(eventId, sourceTableAndStatistics, replicaDatabaseName, replicaTableName,
        replicaLocationManager);
    LOG.info("Metadata mirrored for table {}.{} (no data copied).", database, table);
  } catch (Throwable t) {
    throw new CircusTrainException("Unable to replicate", t);
  }
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
HdfsSnapshotLocationManager(
    HiveConf sourceHiveConf,
    String eventId,
    Table sourceTable,
    List<Partition> sourcePartitions,
    boolean snapshotsDisabled,
    String tableBasePath,
    FileSystemFactory fileSystemFactory,
    SourceCatalogListener sourceCatalogListener) throws IOException {
  this.sourceHiveConf = sourceHiveConf;
  this.eventId = eventId;
  this.sourceTable = sourceTable;
  this.snapshotsDisabled = snapshotsDisabled;
  this.sourceCatalogListener = sourceCatalogListener;
  this.fileSystemFactory = fileSystemFactory;
  String sourceDataLocation;
  if (StringUtils.isNotBlank(tableBasePath)) {
    sourceDataLocation = tableBasePath;
  } else {
    sourceDataLocation = sourceTable.getSd().getLocation();
  }
  sourceDataPath = new Path(sourceDataLocation);
  copyBasePath = createSnapshot();
  String copyBaseLocation = copyBasePath.toString();
  subPaths = calculateSubPaths(sourcePartitions, sourceDataLocation, copyBaseLocation);
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
public SourceLocationManager getLocationManager(
    Table table,
    List<Partition> partitions,
    String eventId,
    Map<String, Object> copierOptions)
  throws IOException {
  if (MetaStoreUtils.isView(table)) {
    return new ViewLocationManager();
  }
  HdfsSnapshotLocationManager hdfsSnapshotLocationManager = new HdfsSnapshotLocationManager(getHiveConf(), eventId,
      table, partitions, snapshotsDisabled, sourceTableLocation, sourceCatalogListener);
  boolean ignoreMissingFolder = MapUtils.getBooleanValue(copierOptions,
      CopierOptions.IGNORE_MISSING_PARTITION_FOLDER_ERRORS, false);
  if (ignoreMissingFolder) {
    return new FilterMissingPartitionsLocationManager(hdfsSnapshotLocationManager, getHiveConf());
  }
  return hdfsSnapshotLocationManager;
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
@Test
public void transformOverride() throws Exception {
  when(avroSerDeConfig.getBaseUrl()).thenReturn("schema");
  Map<String, Object> avroOverrideOptions = new HashMap<>();
  avroOverrideOptions.put(AvroSerDeConfig.TABLE_REPLICATION_OVERRIDE_BASE_URL, "schemaOverride");
  Map<String, Object> transformOptions = new HashMap<>();
  transformOptions.put(AvroSerDeConfig.TABLE_REPLICATION_OVERRIDE_AVRO_SERDE_OPTIONS, avroOverrideOptions);
  when(tableReplicationEvent.getTransformOptions()).thenReturn(transformOptions);
  EventReplicaTable eventReplicaTable = new EventReplicaTable("db", "table", "location");
  when(tableReplicationEvent.getReplicaTable()).thenReturn(eventReplicaTable);
  transformation.tableReplicationStart(tableReplicationEvent, "eventId");

  HiveObjectUtils.updateSerDeUrl(table, AVRO_SCHEMA_URL_PARAMETER, "avroSourceUrl");
  when(schemaCopier.copy("avroSourceUrl", "schemaOverride/eventId/")).thenReturn(destinationPath);

  Table result = transformation.transform(table);
  assertThat(result.getParameters().get(AVRO_SCHEMA_URL_PARAMETER), is(destinationPathString));
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
private Table newTable() {
  Table table = new Table();
  table.setDbName(DB_NAME);
  table.setTableName(TABLE_NAME);
  table.setTableType(TableType.EXTERNAL_TABLE.name());

  StorageDescriptor sd = new StorageDescriptor();
  sd.setLocation(tableLocation);
  table.setSd(sd);

  HashMap<String, String> parameters = new HashMap<>();
  parameters.put(StatsSetupConst.ROW_COUNT, "1");
  table.setParameters(parameters);

  table.setPartitionKeys(PARTITIONS);
  return table;
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
@Test
public void newTableWithNameMappings() {
  TableAndStatistics replicaAndStats = factory.newReplicaTable(EVENT_ID, sourceTableAndStats, MAPPED_DB_NAME,
      MAPPED_TABLE_NAME, REPLICA_DATA_DESTINATION, FULL);
  Table replica = replicaAndStats.getTable();

  assertThat(replica.getDbName(), is(MAPPED_DB_NAME));
  assertThat(replica.getTableName(), is(MAPPED_TABLE_NAME));
  assertThat(replica.getSd().getInputFormat(), is(INPUT_FORMAT));
  assertThat(replica.getSd().getOutputFormat(), is(OUTPUT_FORMAT));
  assertThat(replica.getSd().getLocation(), is(REPLICA_DATA_DESTINATION.toUri().toString()));
  assertThat(replica.getParameters().get("com.hotels.bdp.circustrain.source.table"), is(DB_NAME + "." + TABLE_NAME));
  assertThat(replica.getParameters().get("com.hotels.bdp.circustrain.source.metastore.uris"),
      is(SOURCE_META_STORE_URIS));
  assertThat(replica.getParameters().get("com.hotels.bdp.circustrain.source.location"), is(TABLE_LOCATION));
  assertThat(replica.getParameters().get("com.hotels.bdp.circustrain.replication.event"), is(EVENT_ID));
  assertThat(replica.getParameters().get("com.hotels.bdp.circustrain.last.replicated"), is(not(nullValue())));
  assertThat(replica.getParameters().get("DO_NOT_UPDATE_STATS"), is("true"));
  assertThat(replica.getParameters().get("STATS_GENERATED_VIA_STATS_TASK"), is("true"));
  assertThat(replica.getParameters().get("STATS_GENERATED"), is("true"));
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
private static List<PartitionValue> getPartitions(Table table, Partition partition) {
  if(partition == null){
    return Collections.emptyList();
  }

  final List<String> partitionValues = partition.getValues();
  final List<PartitionValue> output = Lists.newArrayList();
  final List<FieldSchema> partitionKeys = table.getPartitionKeys();
  for(int i =0; i < partitionKeys.size(); i++){
    PartitionValue value = getPartitionValue(partitionKeys.get(i), partitionValues.get(i));
    if(value != null){
      output.add(value);
    }
  }
  return output;
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
private static Table createView(
    HiveMetaStoreClient metaStoreClient,
    String database,
    String view,
    String table,
    List<FieldSchema> partitionCols)
  throws TException {
  Table hiveView = new Table();
  hiveView.setDbName(database);
  hiveView.setTableName(view);
  hiveView.setTableType(TableType.VIRTUAL_VIEW.name());
  hiveView.setViewOriginalText(hql(database, table));
  hiveView.setViewExpandedText(expandHql(database, table, DATA_COLUMNS, partitionCols));
  hiveView.setPartitionKeys(partitionCols);

  StorageDescriptor sd = new StorageDescriptor();
  sd.setCols(DATA_COLUMNS);
  sd.setParameters(new HashMap<String, String>());
  sd.setSerdeInfo(new SerDeInfo());
  hiveView.setSd(sd);

  metaStoreClient.createTable(hiveView);

  return hiveView;
}
 

import org.apache.hadoop.hive.metastore.api.Table; //導入依賴的package包/類
@Test
public void sourcePartitionHasChanged() throws Exception {
  Partition sourcePartition1 = catalog.client().getPartition(DATABASE, SOURCE_TABLE, "part=1");
  sourcePartition1.getSd().getCols().add(BAZ_COL);
  catalog.client().alter_partition(DATABASE, SOURCE_TABLE, sourcePartition1);

  Table sourceTable = catalog.client().getTable(DATABASE, SOURCE_TABLE);
  Table replicaTable = catalog.client().getTable(DATABASE, REPLICA_TABLE);
  HiveDifferences
      .builder(diffListener)
      .comparatorRegistry(comparatorRegistry)
      .source(configuration, sourceTable, new PartitionIterator(catalog.client(), sourceTable, PARTITION_BATCH_SIZE))
      .replica(Optional.of(replicaTable),
          Optional.of(new BufferedPartitionFetcher(catalog.client(), replicaTable, PARTITION_BATCH_SIZE)))
      .checksumFunction(checksumFunction)
      .build()
      .run();

  verify(diffListener, never()).onChangedTable(anyList());
  verify(diffListener, never()).onNewPartition(anyString(), any(Partition.class));
  verify(diffListener, times(1)).onChangedPartition("part=1",
      catalog.client().getPartition(DATABASE, SOURCE_TABLE, "part=1"),
      Arrays.<Diff<Object, Object>> asList(new BaseDiff<Object, Object>(
          "Collection partition.sd.cols of class java.util.ArrayList has different size: left.size()=3 and right.size()=2",
          Arrays.asList(FOO_COL, BAR_COL, BAZ_COL), Arrays.asList(FOO_COL, BAR_COL))));
  verify(diffListener, never()).onDataChanged(anyString(), any(Partition.class));
}