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https://issues.apache.org/jira/browse/ARROW-9676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17223945#comment-17223945
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Nick DiQuattro commented on ARROW-9676:
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[~npr] Oh, actually, I looked back on our thread and my recent test was on the 
wrong file. I re-checked and it works now! The previously crashing column shows 
as a 
 struct<analysis: 
with `as_data_frame = FALSE`, but now it parses as a nested tibble with 
`as_data_frame = TRUE` !!

 

> [R] Map type support
> --------------------
>
>                 Key: ARROW-9676
>                 URL: https://issues.apache.org/jira/browse/ARROW-9676
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: R
>    Affects Versions: 1.0.0
>         Environment: Amazon Linux, 32gb of ram
>            Reporter: Nick DiQuattro
>            Priority: Major
>
> When trying to collect data from a dataset based on parquet files with nested 
> structs (column is a struct with 2 structs nested) of moderate size (1Mish 
> rows), R crashes. If I add a filter to reduce the number of rows, the data is 
> parsed. If I select out the struct column, it works great (up to 21M rows). 
> My hunch is the structs resulting in data.frame columns may be the issue. I 
> am curious if there's a way to have arrow import structs as lists instead of 
> data.frames. Thanks for the direction to here [~neilr8133]!



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