[jira] [Updated] (ARROW-6737) Nested column branch had multiple children

["harikrishnan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-6737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

harikrishnan updated ARROW-6737:
--------------------------------
    Component/s: Python

> Nested column branch had multiple children
> ------------------------------------------
>
>                 Key: ARROW-6737
>                 URL: https://issues.apache.org/jira/browse/ARROW-6737
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>            Reporter: harikrishnan
>            Priority: Major
>
> ```
>  
> {{from pyarrow import json}}
> {{import pyarrow.parquet as pq}}
> {{r = json.read_json('example.jl')}}
> {{pq.write_table(r,'example.parquet')}}
> ```
> Doing the above operation resulting in `{{ArrowInvalid: Nested column branch had multiple children}}`
> Posting it here asper the request from https://github.com/apache/arrow/issues/4045#issuecomment-535867640
> The sample schema looks like this
> ```
> package_version: string
> source_version: string
> uuid: string
> _type: string
> position: struct<ais_type: string, course: double, draught: double, draught_raw: null, heading: double, lat: double, lon: double, nav_state: int64, received_time: timestamp[s], speed: double>
>  child 0, ais_type: string
>  child 1, course: double
>  child 2, draught: double
>  child 3, draught_raw: null
>  child 4, heading: double
>  child 5, lat: double
>  child 6, lon: double
>  child 7, nav_state: int64
>  child 8, received_time: timestamp[s]
>  child 9, speed: double
> provider_name: string
> vessel: struct<beam: null, build_year: null, call_sign: string, dead_weight: null, dwt: null, flag_code: null, flag_name: string, gross_tonnage: null, imo: string, length: null, mmsi: string, name: string, type: null, vessel_type: string>
>  child 0, beam: null
>  child 1, build_year: null
>  child 2, call_sign: string
>  child 3, dead_weight: null
>  child 4, dwt: null
>  child 5, flag_code: null
>  child 6, flag_name: string
>  child 7, gross_tonnage: null
>  child 8, imo: string
>  child 9, length: null
>  child 10, mmsi: string
>  child 11, name: string
>  child 12, type: null
>  child 13, vessel_type: string
> source_provider: string```
>  
>  



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