[ 
https://issues.apache.org/jira/browse/ORC-226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16122491#comment-16122491
 ] 

ASF GitHub Bot commented on ORC-226:
------------------------------------

Github user xndai commented on a diff in the pull request:

    https://github.com/apache/orc/pull/151#discussion_r132589551
  
    --- Diff: c++/include/orc/Reader.hh ---
    @@ -288,6 +288,17 @@ namespace orc {
         virtual uint64_t getCompressionSize() const = 0;
     
         /**
    +     * Get ID of writer that generated the file.
    +     * Current availiable Orc writers:
    +     * 0 = ORC Java
    +     * 1 = ORC C++
    +     * 2 = Presto
    +     * @param id out parameter for writer id
    +     * @return true if writer id is availiable, false if otherwise
    +     */
    +    virtual bool getWriterId(uint32_t & id) const = 0;
    --- End diff --
    
    Will there be any files generated by old Presto writer without an ID? Also 
if we choose to return ORC_FUTURE, there's no way to determine the actual 
writer ID. 


> Support getWriterId in c++ reader interface
> -------------------------------------------
>
>                 Key: ORC-226
>                 URL: https://issues.apache.org/jira/browse/ORC-226
>             Project: ORC
>          Issue Type: Sub-task
>          Components: C++
>            Reporter: Xiening Dai
>
> We just added writer ID to identify files generated by different writers (we 
> have three currently). Need an interface for reader to get this ID back.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Reply via email to