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

Example 16 with ConnectorTableLayoutHandle

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

the class TestJmxSplitManager method getRecordSet.

private RecordSet getRecordSet(SchemaTableName schemaTableName) throws Exception {
    JmxTableHandle tableHandle = metadata.getTableHandle(SESSION, schemaTableName);
    List<ColumnHandle> columnHandles = ImmutableList.copyOf(metadata.getColumnHandles(SESSION, tableHandle).values());
    ConnectorTableLayoutHandle layout = new JmxTableLayoutHandle(tableHandle, TupleDomain.all());
    ConnectorSplitSource splitSource = splitManager.getSplits(JmxTransactionHandle.INSTANCE, SESSION, layout, new SplitSchedulingContext(UNGROUPED_SCHEDULING, false, WarningCollector.NOOP));
    List<ConnectorSplit> allSplits = getAllSplits(splitSource);
    assertEquals(allSplits.size(), nodes.size());
    ConnectorSplit split = allSplits.get(0);
    return recordSetProvider.getRecordSet(JmxTransactionHandle.INSTANCE, SESSION, split, columnHandles);
}

Example 17 with ConnectorTableLayoutHandle

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

the class SplitManager method getSplits.

public SplitSource getSplits(Session session, TableHandle table, SplitSchedulingStrategy splitSchedulingStrategy, WarningCollector warningCollector) {
    long startTime = System.nanoTime();
    ConnectorId connectorId = table.getConnectorId();
    ConnectorSplitManager splitManager = getConnectorSplitManager(connectorId);
    ConnectorSession connectorSession = session.toConnectorSession(connectorId);
    // Now we will fetch the layout handle if it's not presented in TableHandle.
    // In the future, ConnectorTableHandle will be used to fetch splits since it will contain layout information.
    ConnectorTableLayoutHandle layout;
    if (!table.getLayout().isPresent()) {
        TableLayoutResult result = metadata.getLayout(session, table, Constraint.alwaysTrue(), Optional.empty());
        layout = result.getLayout().getLayoutHandle();
    } else {
        layout = table.getLayout().get();
    }
    ConnectorSplitSource source = splitManager.getSplits(table.getTransaction(), connectorSession, layout, new SplitSchedulingContext(splitSchedulingStrategy, preferSplitHostAddresses, warningCollector));
    SplitSource splitSource = new ConnectorAwareSplitSource(connectorId, table.getTransaction(), source);
    if (minScheduleSplitBatchSize > 1) {
        splitSource = new BufferingSplitSource(splitSource, minScheduleSplitBatchSize);
    }
    return splitSource;
}

Example 18 with ConnectorTableLayoutHandle

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

the class HiveMetadata method getTableStatistics.

@Override
public TableStatistics getTableStatistics(ConnectorSession session, ConnectorTableHandle tableHandle, Optional<ConnectorTableLayoutHandle> tableLayoutHandle, List<ColumnHandle> columnHandles, Constraint<ColumnHandle> constraint) {
    if (!isStatisticsEnabled(session)) {
        return TableStatistics.empty();
    }
    if (!tableLayoutHandle.isPresent() || !((HiveTableLayoutHandle) tableLayoutHandle.get()).isPushdownFilterEnabled()) {
        Map<String, ColumnHandle> columns = columnHandles.stream().map(HiveColumnHandle.class::cast).filter(not(HiveColumnHandle::isHidden)).collect(toImmutableMap(HiveColumnHandle::getName, Function.identity()));
        Map<String, Type> columnTypes = columns.entrySet().stream().collect(toImmutableMap(Map.Entry::getKey, entry -> getColumnMetadata(session, tableHandle, entry.getValue()).getType()));
        List<HivePartition> partitions = partitionManager.getPartitions(metastore, tableHandle, constraint, session).getPartitions();
        return hiveStatisticsProvider.getTableStatistics(session, ((HiveTableHandle) tableHandle).getSchemaTableName(), columns, columnTypes, partitions);
    }
    verify(!constraint.predicate().isPresent());
    HiveTableLayoutHandle hiveLayoutHandle = (HiveTableLayoutHandle) tableLayoutHandle.get();
    Set<String> columnNames = columnHandles.stream().map(HiveColumnHandle.class::cast).map(HiveColumnHandle::getName).collect(toImmutableSet());
    Set<ColumnHandle> allColumnHandles = ImmutableSet.<ColumnHandle>builder().addAll(columnHandles).addAll(hiveLayoutHandle.getPredicateColumns().values().stream().filter(column -> !columnNames.contains(column.getName())).collect(toImmutableList())).build();
    Map<String, ColumnHandle> allColumns = Maps.uniqueIndex(allColumnHandles, column -> ((HiveColumnHandle) column).getName());
    Map<String, Type> allColumnTypes = allColumns.entrySet().stream().collect(toImmutableMap(Map.Entry::getKey, entry -> getColumnMetadata(session, tableHandle, entry.getValue()).getType()));
    Constraint<ColumnHandle> combinedConstraint = new Constraint<>(constraint.getSummary().intersect(hiveLayoutHandle.getDomainPredicate().transform(subfield -> isEntireColumn(subfield) ? subfield.getRootName() : null).transform(allColumns::get)));
    SubfieldExtractor subfieldExtractor = new SubfieldExtractor(functionResolution, rowExpressionService.getExpressionOptimizer(), session);
    RowExpression domainPredicate = rowExpressionService.getDomainTranslator().toPredicate(hiveLayoutHandle.getDomainPredicate().transform(subfield -> subfieldExtractor.toRowExpression(subfield, allColumnTypes.get(subfield.getRootName()))));
    RowExpression combinedPredicate = binaryExpression(SpecialFormExpression.Form.AND, ImmutableList.of(hiveLayoutHandle.getRemainingPredicate(), domainPredicate));
    List<HivePartition> partitions = partitionManager.getPartitions(metastore, tableHandle, combinedConstraint, session).getPartitions();
    TableStatistics tableStatistics = hiveStatisticsProvider.getTableStatistics(session, ((HiveTableHandle) tableHandle).getSchemaTableName(), allColumns, allColumnTypes, partitions);
    return filterStatsCalculatorService.filterStats(tableStatistics, combinedPredicate, session, ImmutableBiMap.copyOf(allColumns).inverse(), allColumnTypes);
}

Example 19 with ConnectorTableLayoutHandle

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

the class SystemSplitManager method getSplits.

@Override
public ConnectorSplitSource getSplits(ConnectorTransactionHandle transactionHandle, ConnectorSession session, ConnectorTableLayoutHandle layout, SplitSchedulingContext splitSchedulingContext) {
    SystemTableLayoutHandle layoutHandle = (SystemTableLayoutHandle) layout;
    SystemTableHandle tableHandle = layoutHandle.getTable();
    TupleDomain<ColumnHandle> constraint = layoutHandle.getConstraint();
    SystemTable systemTable = tables.getSystemTable(session, tableHandle.getSchemaTableName()).orElseThrow(() -> new PrestoException(NOT_FOUND, format("Table %s not found", tableHandle.getSchemaTableName())));
    Distribution tableDistributionMode = systemTable.getDistribution();
    if (tableDistributionMode == SINGLE_COORDINATOR) {
        HostAddress address = nodeManager.getCurrentNode().getHostAndPort();
        ConnectorSplit split = new SystemSplit(tableHandle.getConnectorId(), tableHandle, address, constraint);
        return new FixedSplitSource(ImmutableList.of(split));
    }
    ImmutableList.Builder<ConnectorSplit> splits = ImmutableList.builder();
    ImmutableSet.Builder<InternalNode> nodes = ImmutableSet.builder();
    if (tableDistributionMode == ALL_COORDINATORS) {
        nodes.addAll(nodeManager.getCoordinators());
    } else if (tableDistributionMode == ALL_NODES) {
        nodes.addAll(nodeManager.getNodes(ACTIVE).stream().filter(node -> !node.isResourceManager()).collect(toImmutableSet()));
    }
    Set<InternalNode> nodeSet = nodes.build();
    for (InternalNode node : nodeSet) {
        splits.add(new SystemSplit(tableHandle.getConnectorId(), tableHandle, node.getHostAndPort(), constraint));
    }
    return new FixedSplitSource(splits.build());
}

Example 20 with ConnectorTableLayoutHandle

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

the class JmxSplitManager method getSplits.

@Override
public ConnectorSplitSource getSplits(ConnectorTransactionHandle transaction, ConnectorSession session, ConnectorTableLayoutHandle layout) {
    JmxTableLayoutHandle jmxLayout = (JmxTableLayoutHandle) layout;
    JmxTableHandle tableHandle = jmxLayout.getTable();
    TupleDomain<ColumnHandle> predicate = jmxLayout.getConstraint();
    //TODO is there a better way to get the node column?
    Optional<JmxColumnHandle> nodeColumnHandle = tableHandle.getColumnHandles().stream().filter(jmxColumnHandle -> jmxColumnHandle.getColumnName().equals(NODE_COLUMN_NAME)).findFirst();
    checkState(nodeColumnHandle.isPresent(), "Failed to find %s column", NODE_COLUMN_NAME);
    List<ConnectorSplit> splits = nodeManager.getAllNodes().stream().filter(node -> {
        NullableValue value = NullableValue.of(createUnboundedVarcharType(), utf8Slice(node.getNodeIdentifier()));
        return predicate.overlaps(fromFixedValues(ImmutableMap.of(nodeColumnHandle.get(), value)));
    }).map(node -> new JmxSplit(tableHandle, ImmutableList.of(node.getHostAndPort()))).collect(toList());
    return new FixedSplitSource(splits);
}