chapter 7/sampleCode17.py
def start_streaming_dataframe(output_dir):
    "Start a Spark Streaming DataFrame from a file source"
    schema = StructType(
        [StructField(f["name"], f["type"], True) for f in field_metadata]
    )
    return spark.readStream \
        .csv(
            output_dir,
            schema=schema,
            multiLine = True,
            timestampFormat = 'EEE MMM dd kk:mm:ss Z yyyy',
            ignoreTrailingWhiteSpace = True,
            ignoreLeadingWhiteSpace = True
        )
Start a Spark Streaming DataFrame from a file source
Start a Spark Streaming DataFrame from a file source
Start a Spark Streaming DataFrame from a file source
def start_streaming_dataframe(output_dir):
    schema = StructType(
        [StructField(f["name"], f["type"], True) for f in field_metadata]
    )
    return spark.readStream \
        .csv(
            output_dir,
            schema=schema,
            multiLine = True,
            timestampFormat = 'EEE MMM dd kk:mm:ss Z yyyy',
            ignoreTrailingWhiteSpace = True,
            ignoreLeadingWhiteSpace = True
        )
def start_streaming_dataframe ( output_dir ) : schema = StructType ( [ StructField ( f [ "name" ] , f [ "type" ] , True ) for f in field_metadata ] ) return spark . readStream . csv ( output_dir , schema = schema , multiLine = True , timestampFormat = 'EEE MMM dd kk:mm:ss Z yyyy' , ignoreTrailingWhiteSpace = True , ignoreLeadingWhiteSpace = True )
Start a Spark Streaming DataFrame from a file source
Start a Spark Streaming DataFrame from a file source
"Start a Spark Streaming DataFrame from a file source"
output_dir