Chao Sun created ARROW-3649:
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Summary: Refactor MutableBuffer's resize
Key: ARROW-3649
URL: https://issues.apache.org/jira/browse/ARROW-3649
Project: Apache Arrow
Issue Type: Improvement
Reporter: Chao Sun
Assignee: Chao Sun
Currently `MutableBuffer#resize` adjust the buffer's capacity. This is slightly
confusing, and is not conforming with Rust's as
[vector|https://doc.rust-lang.org/std/vec/struct.Vec.html#method.resize], as
well as C++'s buffer impl.
This proposes to rename the `resize` to `reserve`, and modify the current
`set_len` to `resize`. We'll also allow `resize` to shrink the buffer so as to
free up unnecessary space.
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