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From "Wes McKinney (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ARROW-400) [Java] ArrowWriter writes length 0 for Struct types
Date Mon, 05 Dec 2016 23:42:58 GMT

     [ https://issues.apache.org/jira/browse/ARROW-400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wes McKinney updated ARROW-400:
-------------------------------
    Assignee:     (was: Wes McKinney)

I tried to fix this myself, but the following change resulted in a malformed arrow file (the
2nd child field does not get properly written out): https://github.com/wesm/arrow/commit/917848fae7c45983f52afaad7a817d33445f4f45

> [Java] ArrowWriter writes length 0 for Struct types
> ---------------------------------------------------
>
>                 Key: ARROW-400
>                 URL: https://issues.apache.org/jira/browse/ARROW-400
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Java - Vectors
>            Reporter: Wes McKinney
>            Priority: Blocker
>         Attachments: struct_error.json
>
>
> Observed in integration testing. In a length-7 struct, the field metadata for the struct
node has length 0 in the flatbuffer. From C++ gdb:
> {code}
> (gdb) p field_meta
> $1 = {length = 0, null_count = 0}
> {code}
> See attached example json file



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