From 7da18e33ba53de0b9bc203949cf18310888185be Mon Sep 17 00:00:00 2001 From: Nate E TeBlunthuis Date: Fri, 3 Jul 2020 11:38:43 -0700 Subject: [PATCH] Bugfix: use timestamp types Also change the canonical file path. --- reddit_bz2_2parquet.py | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/reddit_bz2_2parquet.py b/reddit_bz2_2parquet.py index f6aaac4..93c3d45 100755 --- a/reddit_bz2_2parquet.py +++ b/reddit_bz2_2parquet.py @@ -12,7 +12,7 @@ conf = conf.set('spark.sql.crossJoin.enabled',"true") spark = SparkSession.builder.getOrCreate() sc = spark.sparkContext -globstr = "/gscratch/comdata/raw_data/reddit_dumps/RC_20*.bz2" +globstr = "/gscratch/comdata/raw_data/reddit_dumps/comments/RC_20*.bz2" import re import glob @@ -100,13 +100,13 @@ schema = StructType().add("id", StringType(), True) schema = schema.add("subreddit", StringType(), True) schema = schema.add("link_id", StringType(), True) schema = schema.add("parent_id", StringType(), True) -schema = schema.add("created_utc", DateType(), True) +schema = schema.add("created_utc", TimestampType(), True) schema = schema.add("author", StringType(), True) schema = schema.add("ups", LongType(), True) schema = schema.add("downs", LongType(), True) schema = schema.add("score", LongType(), True) schema = schema.add("edited", BooleanType(), True) -schema = schema.add("time_edited", DateType(), True) +schema = schema.add("time_edited", TimestampType(), True) schema = schema.add("subreddit_type", StringType(), True) schema = schema.add("subreddit_id", StringType(), True) schema = schema.add("stickied", BooleanType(), True) @@ -119,10 +119,14 @@ rows = comments.map(lambda c: parse_comment(c, schema.fieldNames())) df = sqlContext.createDataFrame(rows, schema) +df = df.withColumn("subreddit_2", f.lower(f.col('subreddit'))) +df = df.drop('subreddit') +df = df.withColumnRenamed('subreddit_2','subreddit') + df = df.withColumnRenamed("created_utc","CreatedAt") df = df.withColumn("Month",f.month(f.col("CreatedAt"))) df = df.withColumn("Year",f.year(f.col("CreatedAt"))) df = df.withColumn("Day",f.dayofmonth(f.col("CreatedAt"))) df = df.withColumn("subreddit_hash",f.sha2(f.col("subreddit"), 256)[0:3]) df = df.sort(["subreddit","author","link_id","parent_id","Year","Month","Day"],ascending=True) -df.write.parquet("/gscratch/comdata/output/reddit_dumps/reddit_comments.parquet", partitionBy=["Year",'Month'],mode='overwrite') +df.write.parquet("/gscratch/comdata/output/reddit_comments.parquet", partitionBy=["Year",'Month'],mode='overwrite') -- 2.39.2