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Posted to issues@arrow.apache.org by "Wes McKinney (Jira)" <ji...@apache.org> on 2019/09/25 15:24:00 UTC
[jira] [Commented] (ARROW-6682) [C++][R] Arrow Hangs reading binary
file generated by C#
[ https://issues.apache.org/jira/browse/ARROW-6682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16937834#comment-16937834 ]
Wes McKinney commented on ARROW-6682:
-------------------------------------
Note that the C# library isn't being integration tested with the other implementations. So it's possible there's a flaw in the C# implementation. The issues you are describing aren't present on data generated by the C++ library
> [C++][R] Arrow Hangs reading binary file generated by C#
> --------------------------------------------------------
>
> Key: ARROW-6682
> URL: https://issues.apache.org/jira/browse/ARROW-6682
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, R
> Affects Versions: 0.14.1
> Reporter: Anthony Abate
> Priority: Major
> Attachments: Generated_4000Batch_50Columns_100Rows_PerBatch.rar
>
>
> I get random hangs on arrow_read in R (windows) when using a very large file (10-12gb). (the file has 37 columns)
> I have memory dumps - All threads seem to be in wait handles.
> Are there debug symbols somewhere?
> Is there a way to get the C++ code to produce diagnostic logging from R?
>
> *UPDATE:* it seems that the hangs are not related to file size, row counts, or # of record batches, but rather the number of *columns*
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