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https://issues.apache.org/jira/browse/ARROW-1712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16336508#comment-16336508
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ASF GitHub Bot commented on ARROW-1712:
---------------------------------------
wesm commented on issue #1481: ARROW-1712: [C++] Add method to BinaryBuilder to
reserve space for value data
URL: https://github.com/apache/arrow/pull/1481#issuecomment-359960791
@kou do you know what is causing this error?
```
Building dependency tree...
Reading state information...
ccache is already the newest version (3.1.9-1).
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
libgirepository1.0-dev : Depends: libgirepository-1.0-1 (= 1.40.0-1) but
1.40.0-1ubuntu0.2 is to be installed
Depends: gobject-introspection (= 1.40.0-1) but it
is not going to be installed
Depends: gir1.2-glib-2.0 (= 1.40.0-1) but
1.40.0-1ubuntu0.2 is to be installed
Depends: gir1.2-freedesktop (= 1.40.0-1) but
1.40.0-1ubuntu0.2 is to be installed
E: Unable to correct problems, you have held broken packages.
```
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> [C++] Add method to BinaryBuilder to reserve space for value data
> -----------------------------------------------------------------
>
> Key: ARROW-1712
> URL: https://issues.apache.org/jira/browse/ARROW-1712
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Panchen Xue
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.9.0
>
>
> The {{Resize}} and {{Reserve}} methods only reserve space for the value
> offsets. When building binary/string arrays with a known size (or some
> reasonable estimate), it would be more efficient to reserve once at the
> beginning to prevent internal reallocations
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