Hi Radu,
I'm not a spark expert, but I haven't seen any documentation on direct
conversion. You might be better off asking the user@spark or dev@spark
mailing lists.
Thanks,
Micah
On Wed, Aug 26, 2020 at 1:46 PM Radu Teodorescu
wrote:
> Hi,
> I noticed that arrow is mentioned as an optional
Hi,
In
"Re: [DISCUSS] Big Endian support in Arrow (was: Re: [Java] Supporting Big
Endian)" on Sun, 30 Aug 2020 22:11:46 -0700,
Jacques Nadeau wrote:
> I know I don't want to have to go and debug on a remote BE
> system if some tests starts failing for that platform...
We can use
Thank Kazuaki for the survey and thank Micah for starting the discussion.
I do not oppose supporting BE. In fact, I am in general optimistic about
the performance impact (for Java).
IMO, this is going to be a painful way (many byte order related problems
are tricky to debug), so I hope we can
I also think this would be a worthwhile addition and help the project
expand in more areas. Beyond the Apache Spark optimization use case, having
Arrow interoperability with the Python data science stack on BE would be
very useful. I have looked at the remaining PRs for Java and they seem
pretty
Hello everyone,
I would like to propose the following specification to ease adoption of SQL
based clients and backends while leveraging data streams for transporting
data. This specification entails a series of protobuf messages to be used
in the opaque messaging framework payloads to enable
I think it's well within the right of an implementation to reject BE
data (or non-native-endian), but if an implementation chooses to
implement and maintain the endianness conversions, then it does not
seem so bad to me.
On Mon, Aug 31, 2020 at 3:33 PM Jacques Nadeau wrote:
>
> And yes, for
And yes, for those of you looking closely, I commented on ARROW-245 when it
was committed. I just forgot about it.
It looks like I had mostly the same concerns then that I do now :) Now I'm
just more worried about format sprawl...
On Mon, Aug 31, 2020 at 1:30 PM Jacques Nadeau wrote:
> What do
>
> What do you mean? The Endianness field (a Big|Little enum) was added 4
> years ago:
> https://issues.apache.org/jira/browse/ARROW-245
I didn't realize that was done, my bad. Good example of format rot from my
pov.
> as far as we can tell, this filesystem layer
> is unaware of expressions, record batches, etc
You're correct that the filesystem layer doesn't directly support
Expressions.
However the datasets API includes the Partitioning classes which embed
expressions in paths. Depending on what expressions
Hi Steve,
Key-value metadata is exposed in both Python and R. See
https://arrow.apache.org/docs/python/generated/pyarrow.Schema.html?highlight=metadata#pyarrow.Schema.metadata
and https://arrow.apache.org/docs/r/articles/arrow.html#r-object-attributes,
respectively.
Neal
On Mon, Aug 31, 2020 at
Is there a way to read/write user-defined metadata in IPC format? As far
as I know, metadata seems to exist for data schema only. It would be very
helpful to expose key-value metadata interface in C++/Python and R APIs.
Best,
Steve
Arrow Build Report for Job nightly-2020-08-31-0
All tasks:
https://github.com/ursa-labs/crossbow/branches/all?query=nightly-2020-08-31-0
Failed Tasks:
- conda-osx-clang-py36:
URL:
https://github.com/ursa-labs/crossbow/branches/all?query=nightly-2020-08-31-0-azure-conda-osx-clang-py36
-
Le 31/08/2020 à 07:11, Jacques Nadeau a écrit :
> I didn't realize that Ishizaki isn't just proposing a BE platform support,
> he is proposing a new BE version of the format.
What do you mean? The Endianness field (a Big|Little enum) was added 4
years ago:
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