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File Parsing for Data Engineers: Mid-Level

Parquet is columnar. Now explain what that physically means.

Parquet is columnar. Now explain what that physically means.

Category
Python
Difficulty
intermediate
Duration
25 minutes
Challenges
0 hands-on challenges

Topics covered: Parquet: What Columnar Actually Means, CSV to Parquet Conversion with pyarrow, Reading Partitioned Parquet from S3 with pyarrow.dataset, Avro vs Parquet vs ORC: The Decision Matrix, Compression Codecs: The Trade-off Interviewers Expect

Lesson Sections

  1. Parquet: What Columnar Actually Means

  2. CSV to Parquet Conversion with pyarrow

  3. Reading Partitioned Parquet from S3 with pyarrow.dataset

  4. Avro vs Parquet vs ORC: The Decision Matrix

  5. Compression Codecs: The Trade-off Interviewers Expect

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