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Posted to jira@arrow.apache.org by "Weston Pace (Jira)" <ji...@apache.org> on 2021/04/05 08:26:00 UTC
[jira] [Commented] (ARROW-12196) [C++] C++ IPC reading looks like
it doesn't support uncompressed buffers
[ https://issues.apache.org/jira/browse/ARROW-12196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17314710#comment-17314710 ]
Weston Pace commented on ARROW-12196:
-------------------------------------
I know [~lidavidm] has been doing testing here recently, both compressed and uncompressed, so I feel this isn't quite right. Although It's possible I am misunderstanding the implication. I'm guessing David can provide a quick answer.
> [C++] C++ IPC reading looks like it doesn't support uncompressed buffers
> -------------------------------------------------------------------------
>
> Key: ARROW-12196
> URL: https://issues.apache.org/jira/browse/ARROW-12196
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Micah Kornfield
> Priority: Major
>
> https://github.com/apache/arrow/blob/master/cpp/src/arrow/ipc/reader.cc#L411 does seems to check for the case (I'm not sure if this is the right code though):
> uncompressed length may be set to -1 to indicate that the data that follows is not compressed, which can be useful for cases where compression does not yield appreciable savings.
> https://github.com/apache/arrow/blob/5cabd31c90dbb32d87074928f68bf5d6e97e37c6/format/Message.fbs#L59
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