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- What are the pros and cons of the Apache Parquet format compared to . . .
30,36,2 Parquet files are most commonly compressed with the Snappy compression algorithm Snappy compressed files are splittable and quick to inflate Big data systems want to reduce file size on disk, but also want to make it quick to inflate the flies and run analytical queries Mutable nature of file Parquet files are immutable, as described
- Reading Fixing a corrupt parquet file - Stack Overflow
Thank you I got pyarrow lib ArrowInvalid: Parquet magic bytes not found in footer Either the file is corrupted or this is not a parquet file when I tried to construct a ParquetFile instance I assume appending PAR1 to the end of the file could help this? But before that, I realized that the ParquetFile constructor optionally takes an "external" FileMetaData instance, which has properties
- Inspect Parquet from command line - Stack Overflow
How do I inspect the content of a Parquet file from the command line? The only option I see now is $ hadoop fs -get my-path local-file $ parquet-tools head local-file | less I would like to avoid
- Spark parquet partitioning : Large number of files
I am trying to leverage spark partitioning I was trying to do something like data write partitionBy ("key") parquet (" location") The issue here each partition creates huge number of parquet files
- How to view Apache Parquet file in Windows? - Stack Overflow
97 What is Apache Parquet? Apache Parquet is a binary file format that stores data in a columnar fashion Data inside a Parquet file is similar to an RDBMS style table where you have columns and rows But instead of accessing the data one row at a time, you typically access it one column at a time
- Is it possible to read parquet files in chunks? - Stack Overflow
The Parquet format stores the data in chunks, but there isn't a documented way to read in it chunks like read_csv Is there a way to read parquet files in chunks?
- How to handle null values when writing to parquet from Spark
How to handle null values when writing to parquet from Spark Asked 7 years, 1 month ago Modified 3 years, 8 months ago Viewed 80k times
- Extension of Apache parquet files, is it . pqt or . parquet?
I wonder if there is a consensus regarding the extension of parquet files I have seen a shorter pqt extension, which has typical 3-letters (like in csv, tsv, txt, etc) and then there is a rather
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