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Posted to jira@arrow.apache.org by "David Li (Jira)" <ji...@apache.org> on 2021/02/04 15:06:00 UTC

[jira] [Reopened] (ARROW-11066) [Java] Is there a bug in flight AddWritableBuffer

     [ https://issues.apache.org/jira/browse/ARROW-11066?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Li reopened ARROW-11066:
------------------------------

> [Java] Is there a bug in flight AddWritableBuffer
> -------------------------------------------------
>
>                 Key: ARROW-11066
>                 URL: https://issues.apache.org/jira/browse/ARROW-11066
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: FlightRPC, Java
>    Affects Versions: 1.0.0
>            Reporter: Kangping Huang
>            Assignee: David Li
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>          Time Spent: 6h 20m
>  Remaining Estimate: 0h
>
> [https://github.com/apache/arrow/blob/9bab12f03ac486bb8270f031b83f0a0411766b3e/java/flight/flight-core/src/main/java/org/apache/arrow/flight/grpc/AddWritableBuffer.java#L94]
> buf.readBytes(stream, buf.readableBytes());
> is this line redundant
> In my perf.svg, this will copy the data from buf to OutputStream, which can not realize zero-copy.



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