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https://issues.apache.org/jira/browse/ARROW-4034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yosuke Shiro resolved ARROW-4034.
---------------------------------
Resolution: Fixed
Fix Version/s: 0.12.0
Issue resolved by pull request 3193
[https://github.com/apache/arrow/pull/3193]
> [Ruby] Interface for FileOutputStream doesn't respect append=True
> -----------------------------------------------------------------
>
> Key: ARROW-4034
> URL: https://issues.apache.org/jira/browse/ARROW-4034
> Project: Apache Arrow
> Issue Type: Bug
> Components: Ruby
> Environment: macOS High Sierra version 10.13.4; ruby 2.4.1; gtk-doc,
> gobject-introspection, boost, Arrow C++ & Parquet C++, Arrow GLib all
> installed via homebrew
> Reporter: Ian Murray
> Assignee: Kouhei Sutou
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.12.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> It seems that the PR (#1978) that resolved Issue #2018 has not cascaded down
> through the existing ruby interface.
> I've been experimenting with variations of the `write-file.rb` examples, but
> passing in the append flag as true
> (`Arrow::FileOutputStream.open("/tmp/file.arrow", true)`) still results in
> overwriting the file, and trying the newer interface using truncate and
> append flags throws `ArgumentError: wrong number of arguments (3 for 2)`.
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