What are the pros and cons of the Apache Parquet format …
Apr 24, 2016 · 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 …
Reading / Fixing a corrupt parquet file - Stack Overflow
Sep 3, 2024 · Reading / Fixing a corrupt parquet file Asked 1 year, 1 month ago Modified 5 months ago Viewed 2k times
Is it possible to read parquet files in chunks? - Stack Overflow
Nov 29, 2019 · 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 do I get schema / column names from parquet file?
Nov 24, 2015 · Also, Cloudera (which supports and contributes heavily to Parquet) has a nice page with examples on usage of hangxie's parquet-tools. An example from that page for your …
Python: save pandas data frame to parquet file - Stack Overflow
Dec 9, 2016 · Is it possible to save a pandas data frame directly to a parquet file? If not, what would be the suggested process? The aim is to be able to send the parquet file to another …
DATE-TIME / TIMESTAMP field in parquet file shown as numbers …
Jan 1, 1970 · Note that the BILL_DT column has same dates as BILL_DT_TIME column with the time information removed. Now, write this table in parquet format with write_parquet(testFyl, …
Extension of Apache parquet files, is it '.pqt' or '.parquet'?
Oct 19, 2021 · 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 …
spark 2.4 Parquet column cannot be converted in file, Column ...
Nov 28, 2019 · The vectorized Parquet reader enables native record-level filtering using push-down filters, improving memory locality, and cache utilization. If you disable the vectorized …
indexing - Index in Parquet - Stack Overflow
Nov 13, 2014 · Basically Parquet has added two new structures in parquet layout - Column Index and Offset Index. Below is a more detailed technical explanation what it solves and how. …
Updating values in apache parquet file - Stack Overflow
Mar 3, 2015 · I have a quite hefty parquet file where I need to change values for one of the column. One way to do this would be to update those values in source text files and recreate …