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new 1cfe124016 ARROW-17092: [Docs] Add note about "Feather" to the IPC
file format document (#13693)
1cfe124016 is described below
commit 1cfe12401698e974bd55649fed59d3f0837f8326
Author: eitsupi <[email protected]>
AuthorDate: Thu Jul 28 14:02:03 2022 +0900
ARROW-17092: [Docs] Add note about "Feather" to the IPC file format
document (#13693)
Authored-by: SHIMA Tatsuya <[email protected]>
Signed-off-by: Sutou Kouhei <[email protected]>
---
docs/source/format/Columnar.rst | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/docs/source/format/Columnar.rst b/docs/source/format/Columnar.rst
index 62bb922afd..109b81e2b9 100644
--- a/docs/source/format/Columnar.rst
+++ b/docs/source/format/Columnar.rst
@@ -1045,7 +1045,11 @@ file. Further more, it is invalid to have more than one
**non-delta**
dictionary batch per dictionary ID (i.e. dictionary replacement is not
supported). Delta dictionaries are applied in the order they appear in
the file footer. We recommend the ".arrow" extension for files created with
-this format.
+this format. Note that files created with this format are sometimes called
+"Feather V2" or with the ".feather" extension, the name and the extension
+derived from "Feather (V1)", which was a proof of concept early in
+the Arrow project for language-agnostic fast data frame storage for
+Python (pandas) and R.
Dictionary Messages
-------------------
