Method Deserialize

be/src/exec/blob-reader.h:146–159

Deserialize a Puffin deletion vector blob into a RoaringBitmap64. Puffin deletion vectors have an 8-byte header followed by the serialized bitmap. @param data Pointer to the raw blob data buffer @param length Length of the blob data in bytes @param output Output parameter for the deserialized RoaringBitmap64 @return Status::OK() on success, error status otherwise

  /// @param output Output parameter for the deserialized RoaringBitmap64
  /// @return Status::OK() on success, error status otherwise
  static Status Deserialize(const uint8_t* data, int64_t length,
      RoaringBitmap64* output) {
    DCHECK(data != nullptr);
    DCHECK(output != nullptr);

    RETURN_IF_ERROR(RoaringBitmap64::Deserialize(data + DELETION_VECTOR_BLOB_HEADER_SIZE,
        length - DELETION_VECTOR_BLOB_HEADER_SIZE, output));

    VLOG(2) << "Deserialized deletion vector with " << output->Cardinality()
               << " deleted positions (min: " << output->Min()
               << ", max: " << output->Max() << ")";

    return Status::OK();
  }
};

/// Specialized blob reader for Puffin deletion vector blobs.