コード例 #1
0
ファイル: context.py プロジェクト: yinchunye19/spark
    def readStream(self):
        """
        Returns a :class:`DataStreamReader` that can be used to read data streams
        as a streaming :class:`DataFrame`.

        .. note:: Evolving.

        :return: :class:`DataStreamReader`

        >>> text_sdf = sqlContext.readStream.text(tempfile.mkdtemp())
        >>> text_sdf.isStreaming
        True
        """
        return DataStreamReader(self)
コード例 #2
0
ファイル: session.py プロジェクト: mingpeng2live/spark
    def readStream(self) -> DataStreamReader:
        """
        Returns a :class:`DataStreamReader` that can be used to read data streams
        as a streaming :class:`DataFrame`.

        .. versionadded:: 2.0.0

        Notes
        -----
        This API is evolving.

        Returns
        -------
        :class:`DataStreamReader`
        """
        return DataStreamReader(self._wrapped)
コード例 #3
0
ファイル: context.py プロジェクト: zhengruifeng/spark
    def readStream(self) -> DataStreamReader:
        """
        Returns a :class:`DataStreamReader` that can be used to read data streams
        as a streaming :class:`DataFrame`.

        .. versionadded:: 2.0.0

        Notes
        -----
        This API is evolving.

        Returns
        -------
        :class:`DataStreamReader`

        >>> text_sdf = sqlContext.readStream.text(tempfile.mkdtemp())
        >>> text_sdf.isStreaming
        True
        """
        return DataStreamReader(self.sparkSession)