kou commented on code in PR #41180: URL: https://github.com/apache/arrow/pull/41180#discussion_r1568300130
########## docs/source/format/DissociatedIPC.rst: ########## @@ -0,0 +1,335 @@ +.. Licensed to the Apache Software Foundation (ASF) under one +.. or more contributor license agreements. See the NOTICE file +.. distributed with this work for additional information +.. regarding copyright ownership. The ASF licenses this file +.. to you under the Apache License, Version 2.0 (the +.. "License"); you may not use this file except in compliance +.. with the License. You may obtain a copy of the License at + +.. http://www.apache.org/licenses/LICENSE-2.0 + +.. Unless required by applicable law or agreed to in writing, +.. software distributed under the License is distributed on an +.. "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +.. KIND, either express or implied. See the License for the +.. specific language governing permissions and limitations +.. under the License. + +.. _dissociated-ipc: + +======================== +Dissociated IPC Protocol +======================== + +.. warning:: + + Experimental: The Dissociated IPC Protocol is experimental in its current + form. Based on feedback and usage the protocol definition may change until + it is fully standardized. + +Rationale +========= + +The :ref:`Arrow IPC format <format-ipc>` describes a protocol for transferring +Arrow data as a stream of record batches. This protocol expects a continuous +stream of bytes divided into discrete messages (using a length prefix and +continuation indicator). Each discrete message consists of two portions: + +* A `Flatbuffers`_ header message +* A series of bytes consisting of the flattened and packed body buffers (some + message types, like Schema messages, do not have this section) + - This is referred to as the *message body* in the IPC format spec. + +For most cases, the existing IPC format as it currently exists is extremely efficient: + +* Receiving data in the IPC format allows zero-copy utilization of the body + buffer bytes, no deserialization is required to form Arrow Arrays +* An IPC (Feather) file can be memory-mapped because it is location agnostic Review Comment: Ah, "IPC file format file"? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
