Examples with SchemaTableName com.facebook.presto.spi.SchemaTableName used on opensource projects

Example 16 with SchemaTableName

use of com.facebook.presto.spi.SchemaTableName in project presto by prestodb.

the class HivePartitionManager method getPartitions.

public HivePartitionResult getPartitions(SemiTransactionalHiveMetastore metastore, ConnectorTableHandle tableHandle, Constraint<ColumnHandle> constraint) {
    HiveTableHandle hiveTableHandle = (HiveTableHandle) tableHandle;
    TupleDomain<ColumnHandle> effectivePredicate = constraint.getSummary();
    SchemaTableName tableName = hiveTableHandle.getSchemaTableName();
    Table table = getTable(metastore, tableName);
    Optional<HiveBucketHandle> hiveBucketHandle = getHiveBucketHandle(connectorId, table);
    List<HiveColumnHandle> partitionColumns = getPartitionKeyColumnHandles(connectorId, table);
    List<HiveBucket> buckets = getHiveBucketNumbers(table, effectivePredicate);
    TupleDomain<HiveColumnHandle> compactEffectivePredicate = toCompactTupleDomain(effectivePredicate, domainCompactionThreshold);
    if (effectivePredicate.isNone()) {
        return new HivePartitionResult(partitionColumns, ImmutableList.of(), TupleDomain.none(), TupleDomain.none(), hiveBucketHandle);
    }
    if (partitionColumns.isEmpty()) {
        return new HivePartitionResult(partitionColumns, ImmutableList.of(new HivePartition(tableName, compactEffectivePredicate, buckets)), effectivePredicate, TupleDomain.none(), hiveBucketHandle);
    }
    List<Type> partitionTypes = partitionColumns.stream().map(column -> typeManager.getType(column.getTypeSignature())).collect(toList());
    List<String> partitionNames = getFilteredPartitionNames(metastore, tableName, partitionColumns, effectivePredicate);
    // do a final pass to filter based on fields that could not be used to filter the partitions
    int partitionCount = 0;
    ImmutableList.Builder<HivePartition> partitions = ImmutableList.builder();
    for (String partitionName : partitionNames) {
        Optional<Map<ColumnHandle, NullableValue>> values = parseValuesAndFilterPartition(partitionName, partitionColumns, partitionTypes, constraint);
        if (values.isPresent()) {
            if (partitionCount == maxPartitions) {
                throw new PrestoException(HIVE_EXCEEDED_PARTITION_LIMIT, format("Query over table '%s' can potentially read more than %s partitions", hiveTableHandle.getSchemaTableName(), maxPartitions));
            }
            partitionCount++;
            partitions.add(new HivePartition(tableName, compactEffectivePredicate, partitionName, values.get(), buckets));
        }
    }
    // All partition key domains will be fully evaluated, so we don't need to include those
    TupleDomain<ColumnHandle> remainingTupleDomain = TupleDomain.withColumnDomains(Maps.filterKeys(effectivePredicate.getDomains().get(), not(Predicates.in(partitionColumns))));
    TupleDomain<ColumnHandle> enforcedTupleDomain = TupleDomain.withColumnDomains(Maps.filterKeys(effectivePredicate.getDomains().get(), Predicates.in(partitionColumns)));
    return new HivePartitionResult(partitionColumns, partitions.build(), remainingTupleDomain, enforcedTupleDomain, hiveBucketHandle);
}

Example 17 with SchemaTableName

use of com.facebook.presto.spi.SchemaTableName in project presto by prestodb.

the class HiveSplitManager method getSplits.

@Override
public ConnectorSplitSource getSplits(ConnectorTransactionHandle transaction, ConnectorSession session, ConnectorTableLayoutHandle layoutHandle) {
    HiveTableLayoutHandle layout = (HiveTableLayoutHandle) layoutHandle;
    List<HivePartition> partitions = layout.getPartitions().get();
    HivePartition partition = Iterables.getFirst(partitions, null);
    if (partition == null) {
        return new FixedSplitSource(ImmutableList.of());
    }
    SchemaTableName tableName = partition.getTableName();
    List<HiveBucketing.HiveBucket> buckets = partition.getBuckets();
    Optional<HiveBucketHandle> bucketHandle = layout.getBucketHandle();
    // sort partitions
    partitions = Ordering.natural().onResultOf(HivePartition::getPartitionId).reverse().sortedCopy(partitions);
    SemiTransactionalHiveMetastore metastore = metastoreProvider.apply((HiveTransactionHandle) transaction);
    Optional<Table> table = metastore.getTable(tableName.getSchemaName(), tableName.getTableName());
    if (!table.isPresent()) {
        throw new TableNotFoundException(tableName);
    }
    Iterable<HivePartitionMetadata> hivePartitions = getPartitionMetadata(metastore, table.get(), tableName, partitions, bucketHandle.map(HiveBucketHandle::toBucketProperty));
    HiveSplitLoader hiveSplitLoader = new BackgroundHiveSplitLoader(connectorId, table.get(), hivePartitions, bucketHandle, buckets, session, hdfsEnvironment, namenodeStats, directoryLister, executor, maxPartitionBatchSize, maxInitialSplits, recursiveDfsWalkerEnabled);
    HiveSplitSource splitSource = new HiveSplitSource(maxOutstandingSplits, hiveSplitLoader, executor);
    hiveSplitLoader.start(splitSource);
    return splitSource;
}

Example 18 with SchemaTableName

use of com.facebook.presto.spi.SchemaTableName in project presto by prestodb.

the class ExampleMetadata method listTableColumns.

@Override
public Map<SchemaTableName, List<ColumnMetadata>> listTableColumns(ConnectorSession session, SchemaTablePrefix prefix) {
    requireNonNull(prefix, "prefix is null");
    ImmutableMap.Builder<SchemaTableName, List<ColumnMetadata>> columns = ImmutableMap.builder();
    for (SchemaTableName tableName : listTables(session, prefix)) {
        ConnectorTableMetadata tableMetadata = getTableMetadata(tableName);
        // table can disappear during listing operation
        if (tableMetadata != null) {
            columns.put(tableName, tableMetadata.getColumns());
        }
    }
    return columns.build();
}

Example 19 with SchemaTableName

use of com.facebook.presto.spi.SchemaTableName in project presto by prestodb.

the class ExampleMetadata method getTableMetadata.

@Override
public ConnectorTableMetadata getTableMetadata(ConnectorSession session, ConnectorTableHandle table) {
    ExampleTableHandle exampleTableHandle = (ExampleTableHandle) table;
    checkArgument(exampleTableHandle.getConnectorId().equals(connectorId), "tableHandle is not for this connector");
    SchemaTableName tableName = new SchemaTableName(exampleTableHandle.getSchemaName(), exampleTableHandle.getTableName());
    return getTableMetadata(tableName);
}

Example 20 with SchemaTableName

use of com.facebook.presto.spi.SchemaTableName in project presto by prestodb.

the class ExampleMetadata method listTables.

@Override
public List<SchemaTableName> listTables(ConnectorSession session, String schemaNameOrNull) {
    Set<String> schemaNames;
    if (schemaNameOrNull != null) {
        schemaNames = ImmutableSet.of(schemaNameOrNull);
    } else {
        schemaNames = exampleClient.getSchemaNames();
    }
    ImmutableList.Builder<SchemaTableName> builder = ImmutableList.builder();
    for (String schemaName : schemaNames) {
        for (String tableName : exampleClient.getTableNames(schemaName)) {
            builder.add(new SchemaTableName(schemaName, tableName));
        }
    }
    return builder.build();
}