alues.
Not only Apache Arrow files generated by pg2arrow, this min/max
statistics values are appendable by
rewrite of the Footer portion, without relocation of record-batches.
So, we plan to provide a standalone
command to attach the min/max statistics onto the existing Apache
Arrow
re as a
> parallel list on RecordBatch itself.
>
> If we do add a new structure or arbitrary key-value pair we should not use
> KeyValue but should have something where the values can be bytes.
>
> On Wed, Feb 17, 2021 at 7:17 PM Kohei KaiGai wrote:
>
> > Hello,
> &g
Hello,
Does Apache Arrow have any standard way to embed min/max values of the fields
per record-batch basis?
It looks FieldNode supports neither dedicated min/max attribute nor
custom-metadata.
https://github.com/apache/arrow/blob/master/format/Message.fbs#L28
If we embed an array of min/max
Hello,
Let me share my recent works below:
https://github.com/heterodb/pg-strom/wiki/804:-Pcap2Arrow
This standalone command-line tool allows to capture network packets
from network interface devices,
and convert them into Apache Arrow data format according to the
pre-defined data schema for
Hello,
pg2arrow [*1] has '--dump' mode to print out schema definition of the
given Apache Arrow file.
Does it make sense for you?
$ ./pg2arrow --dump ~/hoge.arrow
[Footer]
{Footer: version=V4, schema={Schema: endianness=little,
fields=[{Field: name="id", nullable=true, type={Int32}, children=[],
an see a UUID type I have defined and
> serialized through Arrow's binary protocol machinery
>
> https://github.com/apache/arrow/blob/master/cpp/src/arrow/extension_type-test.cc
>
> Thanks
> Wes
>
> [1]:
> https://github.com/apache/arrow/commit/a79cc8098831924179
t;
> On Monday, April 29, 2019, Kohei KaiGai wrote:
>
> > Hello folks,
> >
> > How about your opinions about network address types support in Apache
> > Arrow data format?
> > Network address always appears at network logs massively generated by
> > any netwo
Hello folks,
How about your opinions about network address types support in Apache
Arrow data format?
Network address always appears at network logs massively generated by
any network facilities,
and it is a significant information when people analyze their backward logs.
I'm working on Apache
quot;pandas\0").
Value is at 0x0058 + 0x0010. Here is a int value: 0x03b4 (= 948byes), then
the next byte (0x006c) begins the cstring body. ("{pandas_version ... ).
I didn't follow the entire data file, however, it makes me more clear.
Best regards,
2019年1月6日(日) 8:50 Wes McKinney :
>
> hi
Hello,
I'm now trying to understand the Apache Arrow format for my application.
Is there a format specification document including meta-data layout?
I checked out the description at:
https://github.com/apache/arrow/tree/master/docs/source/format
https://github.com/apache/arrow/tree/master/format
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