Adds description of IPROTO_INSERT_ARROW request

doc/reference/internals/iproto/images/iproto_insert_arrow.puml

@@ -0,0 +1,34 @@
+@startuml
+
+skinparam {
+    HyperlinkColor #0077FF
+    FontColor #313131
+    BorderColor #313131
+    BackgroundColor transparent
+}
+
+json "**IPROTO_INSERT_ARROW**" as insert_request {
+    "Size": "MP_UINT",
+    "Header": {
+      "[[https://tarantool.io/en/doc/latest/reference/internals/iproto/keys IPROTO_REQUEST_TYPE]]": "IPROTO_INSERT_ARROW",
+      "[[https://tarantool.io/en/doc/latest/reference/internals/iproto/keys IPROTO_SYNC]]": "MP_UINT"
+    },
+    "Body": {
+      "[[https://tarantool.io/en/doc/latest/reference/internals/iproto/keys IPROTO_SPACE_ID]]": "MP_UINT",
+      "[[https://tarantool.io/en/doc/latest/reference/internals/iproto/keys IPROTO_INSERT_ARROW]]": "MP_ARROW"
+    }
+}
+
+json "**Response to IPROTO_INSERT_ARROW**" as insert_response {
+    "Size": "MP_UINT",
+    "Header": {
+    "[[https://tarantool.io/en/doc/latest/reference/internals/iproto/keys IPROTO_REQUEST_TYPE]]": "IPROTO_OK",
+    "[[https://tarantool.io/en/doc/latest/reference/internals/iproto/keys IPROTO_SYNC]]": "MP_UINT",
+    "[[https://tarantool.io/en/doc/latest/reference/internals/iproto/keys IPROTO_SCHEMA_VERSION]]": "MP_UINT"
+    },
+    "Body": {
+    "[[https://tarantool.io/en/doc/latest/reference/internals/iproto/keys IPROTO_DATA]]": "Empty body"
+    }
+}
+
+@enduml

doc/reference/internals/iproto/keys.rst

@@ -491,6 +491,9 @@ Available IPROTO_FEATURES are the following:
 -   ``IPROTO_FEATURE_WATCHERS = 3`` -- remote watchers support: :ref:`IPROTO_WATCH <box_protocol-watch>`,
     :ref:`IPROTO_UNWATCH <box_protocol-unwatch>`, and :ref:`IPROTO_EVENT <box_protocol-event>` commands.
 
+-   ``IPROTO_FEATURE_INSERT_ARROW = 12`` -- support of data insertion in the Arrow format. Learn more 
+    about the :ref:`feature <internals-iproto-insert-arrow>`. Available since version :doc:`3.3.0 </release/3.3.0>`.
+
 ..  _internals-iproto-keys-sync:
 
 IPROTO_SYNC

doc/reference/internals/iproto/requests.rst

@@ -82,6 +82,11 @@ Overview
             -   0x0c
             -   Increment the LSN and do nothing else
 
+        *   -   :ref:`IPROTO_INSERT_ARROW <internals-iproto-insert-arrow>`
+            -   0x11
+            -   Iproto Insert Arrow data request. Available since
+                version :doc:`3.3.0 </release/3.3.0>`.
+
         *   -   :ref:`IPROTO_PING <box_protocol-ping>`
             -   0x40
             -   Ping (:ref:`conn:ping() <conn-ping>`)
@@ -90,8 +95,6 @@ Overview
             -   0x49
             -   Share iproto version and supported features
 
-
-
 ..  _internals-iproto-ok:
 
 IPROTO_OK
@@ -392,6 +395,19 @@ are the same, but the LSN must be increased because a data-change
 must be recorded.
 The body is: nothing.
 
+..  _internals-iproto-insert-arrow:
+
+IPROTO_INSERT_ARROW
+-------------------
+
+Since version :doc:`3.3.0 </release/3.3.0>`.
+
+Code: 0x11
+The body is a 2-item map:
+
+..  raw:: html
+    :file: images/iproto_insert_arrow.svg
+
 
 ..  _box_protocol-ping:
 

prolog.rst

@@ -34,7 +34,7 @@
 
     <br />
 
-.. |iproto_version| replace:: 3
+.. |iproto_version| replace:: 10
 
 .. |tcm_full_name| replace:: Tarantool Cluster Manager