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Please help me with my code, is it because of the TimestamTyoe of data? The QUERY WHERE and ORDER BY does not work. The WHERE
Please help me with my code, is it because of the TimestamTyoe of data? The QUERY
WHERE and ORDER BY does not work. The WHERE first part without the ORDER BY works.
Consider a warc.csv file related data. An indicative line is:
T::Z record id reposnse, ip addres, URL, Server, HTML DOC
Columns in order: first the Warc date, the warc record id the Warc type eg metadata,
response, etc the content length, the public IP address, the target URL, the server running
the site eg apache, DginX, etc and finally the overall content of the page with the entire
HTML DOM. For the time range between : and : find the
most used servers. Results to be given in descending order of servers.
My code:
from datetime import datetime
from pyspark, sql import SparkSession
from pyspark.sqltypes import StructType, StructField, StringType, IntegerType,
FloaType TimestampType.
# Initialize Spark Session
spark SparkSession.builder.appNameWarcAnalysisgetOrCreate
# Define the schema
schema StructType
StructFielddate TimestamaType True
StructFieldrecordid StringType, True
StructFieldtype StringType True
StructField contentlength", IntegerType True
StructFieldpublic p StringType True
StructFieldtargetrl StringType, True
StructField server StrionfType True
StructField btmldom StringType True
# Load the data into RataFrame
spark.read.formatcsv
optionsheader'false'
schemaschema
loadwarccsv
# Register the Bata Frame as a temporary table
df createOrReplaceTempViewwarc
##Filter the data using Spark SQL
id quex "SELECT warc
FROM wars
WHERE warc.date :: AND warc.date
T::Z
ORDER BY warc.date ASC
filtered.df spack.sqlidquery
# Show the result
filtered dfshow
# Stop Spark Session
spark.stop
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