I have a large parquet file where the data in one of the columns is sorted. A very simplified example is below. I am interested in querying the las ...
I have a large parquet file where the data in one of the columns is sorted. A very simplified example is below. I am interested in querying the las ...
I'm creating a table in Athena and specifying the format as PARQUET however the file extension is not being recognized in S3. The type is displayed as ...
I got this issue, when I ingested/wrote data to FeatureSet (part of MLRun FeatureStore) and than I read the data via PySpark (it seems as invalid parq ...
I am using apache arrow golang library to read parquet. No-repeated column seems straight forward, but how can I read repeated field? ...
Say I have two datasets stored as parquets that I want to combine. I can read them in, rbind them, then spit them back out into a parquet, like so: # ...
When I am working with CSV, I can provide custom schema while reading a file, and the benefits I receive are as follows (along with the contrast with ...
screenshot from source and destinationWhile we are writing into parquet file using spark/scala, DST(day light saving times) times are auto converting ...
I am facing with one problem in Azure Databricks. In my notebook I am executing simple write command with partitioning: And I see something like th ...
Given a ParquetFile object (docs) I am able to retrieve data at row group / column chunk level either with read_row_group or with the metadata attribu ...
i have a df something like below Filename col1 col2 file1 1 1 file1 ...
when I use pd.read_parquet to read a parquet file this error is displayed my code: error: I want to convert this file to csv: https://d37ci ...
. Answers to this question are eligible for a +50 reputation bounty. Ts ...
I have the following code: The output is: Just curious, why did Pandas dataframe ignore __null_dask_index__ column name? Or is __null_dask_index ...
When I load my parquet file into a Polars DataFrame, it takes about 5.5 GB of RAM. Polars is great compared to other options I have tried. However, Po ...
Unable to resolve this after looking at a bunch of similar answers. The CSV I have only has the last line of the Dataframe printing. I need the whol ...
I'm creating a external table in azure databricks on top of the ADLS parquet files using the syntax below. create table if not exists <table_name& ...
I've been working on a project where I've been storing the iot data in s3 bucket and batching them using aws kinesis firehose, i have a lambda functio ...
While researching on writing files to Parquet in Java I came across - org.apache.parquet.hadoop.ParquetWriter org.apache.parquet.avro.AvroParque ...
looking for something like this: Save Dataframe to csv directly to s3 Python the api shows these arguments: https://pola-rs.github.io/polars/py-pola ...
i have multiple part folders each containing parquet files (ex given below). Now across a part-folder the schema can be different (either the num of c ...