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Posted to issues@arrow.apache.org by "Anthony Abate (Jira)" <ji...@apache.org> on 2019/09/25 18:54:00 UTC
[jira] [Comment Edited] (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=16937994#comment-16937994 ]
Anthony Abate edited comment on ARROW-6682 at 9/25/19 6:53 PM:
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[~eerhardt]- i used the current nuget version + some code i wrote to build null support
[~wesm] [~npr] - this looks/behaves like a threading issue - I don't get any hanging if i reduce the VM to 1 core (not ideal)
(I can't explain the core dumps though)
was (Author: abbot):
[~eerhardt]- i used the current nuget version + some code i wrote to build null support
[~wesm] [~npr] - this looks like a threading issue - I don't get any hanging if i reduce the VM to 1 core (not ideal)
> [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, Generated_4000Batch_50Columns_100Rows_PerBatch.zip
>
>
> 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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