Example usage for com.amazonaws.services.glue.model StorageDescriptor getBucketColumns

Introduction

In this page you can find the example usage for com.amazonaws.services.glue.model StorageDescriptor getBucketColumns.

Prototype

public java.util.List<String> getBucketColumns() 

Source Link

Document

A list of reducer grouping columns, clustering columns, and bucketing columns in the table.

Usage

From source file:com.facebook.presto.hive.metastore.glue.converter.GlueToPrestoConverter.java

License:Apache License

private static void setStorageBuilder(StorageDescriptor sd, Storage.Builder storageBuilder) {
    requireNonNull(sd.getSerdeInfo(), "StorageDescriptor SerDeInfo is null");
    SerDeInfo serdeInfo = sd.getSerdeInfo();

    Optional<HiveBucketProperty> bucketProperty = Optional.empty();
    if (sd.getNumberOfBuckets() > 0) {
        if (isNullOrEmpty(sd.getBucketColumns())) {
            throw new PrestoException(HIVE_INVALID_METADATA,
                    "Table/partition metadata has 'numBuckets' set, but 'bucketCols' is not set");
        }/*from ww  w . j  a  v  a  2s  . c  om*/
        List<SortingColumn> sortedBy = ImmutableList.of();
        if (!isNullOrEmpty(sd.getSortColumns())) {
            sortedBy = sd.getSortColumns().stream()
                    .map(column -> new SortingColumn(column.getColumn(),
                            Order.fromMetastoreApiOrder(column.getSortOrder(), "unknown")))
                    .collect(toImmutableList());
        }
        bucketProperty = Optional
                .of(new HiveBucketProperty(sd.getBucketColumns(), sd.getNumberOfBuckets(), sortedBy));
    }

    storageBuilder
            .setStorageFormat(StorageFormat.createNullable(serdeInfo.getSerializationLibrary(),
                    sd.getInputFormat(), sd.getOutputFormat()))
            .setLocation(nullToEmpty(sd.getLocation())).setBucketProperty(bucketProperty)
            .setSkewed(sd.getSkewedInfo() != null && !isNullOrEmpty(sd.getSkewedInfo().getSkewedColumnNames()))
            .setSerdeParameters(firstNonNull(serdeInfo.getParameters(), ImmutableMap.of())).build();
}

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