AWSGlue_PySpark_csv2parquet.py

import sys
from awsglue.transforms import *
from awsglue.utils import getResolvedOptions
from pyspark.context import SparkContext
from awsglue.context import GlueContext
from awsglue.job import Job


#added by Roshna 
from awsglue.dynamicframe import DynamicFrame

args = getResolvedOptions(sys.argv, ["JOB_NAME"])
sc = SparkContext()
glueContext = GlueContext(sc)
spark = glueContext.spark_session
job = Job(glueContext)
job.init(args["JOB_NAME"], args)

#added by Roshna 
predicate_pushdown = "region in ('ca','gb','us')"

# Script generated for node S3 bucket
S3bucket_node1 = glueContext.create_dynamic_frame.from_catalog(
    database="roshna_youtube_raw",
    table_name="raw_statistics_data",
    transformation_ctx="S3bucket_node1",
    push_down_predicate = predicate_pushdown
)

# Script generated for node ApplyMapping
ApplyMapping_node2 = ApplyMapping.apply(
    frame=S3bucket_node1,
    mappings=[
        ("video_id", "string", "video_id", "string"),
        ("trending_date", "string", "trending_date", "string"),
        ("title", "string", "title", "string"),
        ("channel_title", "string", "channel_title", "string"),
        ("category_id", "long", "category_id", "bigint"),
        ("publish_time", "string", "publish_time", "string"),
        ("tags", "string", "tags", "string"),
        ("views", "long", "views", "bigint"),
        ("likes", "long", "likes", "bigint"),
        ("dislikes", "long", "dislikes", "bigint"),
        ("comment_count", "long", "comment_count", "bigint"),
        ("thumbnail_link", "string", "thumbnail_link", "string"),
        ("comments_disabled", "boolean", "comments_disabled", "boolean"),
        ("ratings_disabled", "boolean", "ratings_disabled", "boolean"),
        ("video_error_or_removed", "boolean", "video_error_or_removed", "boolean"),
        ("description", "string", "description", "string"),
        ("region", "string", "region", "string"),
    ],
    transformation_ctx="ApplyMapping_node2",
)

#added by Roshna 
resolvechoice2 = ResolveChoice.apply(frame = ApplyMapping_node2, choice = "make_struct", transformation_ctx = "resolvechoice2")

#added by Roshna 
dropnullfields3 = DropNullFields.apply(frame = resolvechoice2, transformation_ctx = "dropnullfields3")
datasink1 = dropnullfields3.toDF().coalesce(1)
df_final_output = DynamicFrame.fromDF(datasink1, glueContext, "df_final_output")

# Script generated for node S3 bucket
S3bucket_node3 = glueContext.write_dynamic_frame.from_options(
    frame=df_final_output,
    connection_type="s3",
    format="glueparquet",
    connection_options={
        "path": "s3://roshna-youtube-cleansed-version-ohio-dev/youtube/raw-statistics-data/",
        "partitionKeys": ["region"],
    },
    transformation_ctx="S3bucket_node3",
)

job.commit()