Thanks!
> You should be able to store different length vectors in Parquet. Think of
> strings simply as an array of bytes, and those are variable length. You
> would want to make sure you don’t use DICTIONARY_ENCODING in that case.
>
Interesting. We'll look at that.
> No, I'm not aware of any
Joaquin,
> Do you know whether there any activity on supporting partial read/writes
in
arrow or fastparquet?
I’m not entirely sure about the status of partial read/writes in Arrow’s
Parquet implementation but
https://github.com/xitongsys/parquet-go for example has this capability.
> Even then, t
Hi Nick, all,
Thanks! I updated the blog post to specify the requirements better.
First, we plan to store the datasets in S3 (on min.io). I agree this works
nicely with Parquet.
Do you know whether there any activity on supporting partial read/writes in
arrow or fastparquet? That would change th
On Tue, Jun 30, 2020 at 8:09 AM Nicholas Poorman wrote:
>
> Joaquin,
>
> After reading your proposal I think there may be some things you may want
> to consider.
>
> It sounds like you are trying to come up with a one size fits all solution
> but it may be better to define your requirements based
Joaquin,
After reading your proposal I think there may be some things you may want
to consider.
It sounds like you are trying to come up with a one size fits all solution
but it may be better to define your requirements based on your needs and
environment.
For starters, where do you plan to stor
Hi all,
Sorry for restarting an old thread, but we've had a _lot_ of discussions
over the past 9 months or so on how to store machine learning datasets
internally. We've written a blog post about it and would love to hear your
thoughts:
https://openml.github.io/blog/openml/data/2020/03/23/Finding-
hi Joaquin -- there would be no practical difference, primarily it
would be for the preservation of APIs in Python and R related to the
Feather format. Internally "read_feather" will invoke the same code
paths as the Arrow protocol file reader
- Wes
On Thu, Jun 20, 2019 at 4:12 PM Joaquin Vanscho
Thank you all for your very detailed answers! I also read in other threads
that the 1.0.0 release might be coming somewhere this fall? I'm really
looking forward to that.
@Wes: will there be any practical difference between Feather and Arrow
after the 1.0.0 release? It is just an alias? What would
hi there,
On Sun, Jun 16, 2019 at 6:07 AM Micah Kornfield
wrote:
> > * Can Feather files already be read in Java/Go/C#/...?
>
> I don't know the status of feather. The arrow file format should be
> readable by Java and C++ (I believe all the languages that bind C++ also
> support the format,
hi Micah and Joaquin,
With regards to the Feather format, I have been waiting a _long_ time
for the R community to "catch up" with Apache Arrow development and
get a release of an Arrow R project out that can be installed by most
R users. We are finally approaching that point, and so Feather
devel
Hi Joaquin,
Answers inline:
Thanks, that explains the arrow-parquet relationship very nicely.
> So, at the moment you would recommend Parquet for any form of archival
> storage, right?
Yes Parquet should be used as an archival format.
* Is Feather a good choice for long-term storage (is the bina
Hi Neal,
Thanks, that explains the arrow-parquet relationship very nicely.
So, at the moment you would recommend Parquet for any form of archival
storage, right?
We could also experiment with storing data as both Parquet and Arrow for
now.
Still curious about the other questions, like meta-data,
Hi Joaquin,
I recognize that this doesn't answer all of your questions, but we are in
the process of adding a FAQ to the arrow.apache.org website that speaks to
some of them: https://github.com/apache/arrow/blob/master/site/faq.md
Neal
On Wed, Jun 12, 2019 at 3:39 AM Joaquin Vanschoren <
joaquin.
Dear all,
Thanks for creating Arrow! I'm part of OpenML.org, an open source
initiative/platform for sharing machine learning datasets and models. We
are currently storing data in either ARFF or Parquet, but are looking into
whether e.g. Feather or a mix of Feather and Parquet could be the new
stan
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