Commits
Paddy Horan authored and Neville Dipale committed 2943f1c0085
ARROW-3827: [Rust] Implement UnionArray Updated Implements `UnionArray`. This PR was getting too big as it was so I will address the following as follow up PR's: [ARROW-8546](https://issues.apache.org/jira/browse/ARROW-8546) [ARROW-8547](https://issues.apache.org/jira/browse/ARROW-8547) [ARROW-8576](https://issues.apache.org/jira/browse/ARROW-8576) Note that I believe that we should split up `array.rs` and use separate underlying modules for each of the array types, keeping the `Array` trait and some common functionality in `array.rs`. Having a single file for all the array types worked fine to begin with but now it's getting bloated. This PR assumes we agree on this (at which point I'll open a follow up PR to move the other array types), if you disagree I can update this to move `UnionArray` back into `array.rs`, etc. Closes #7004 from paddyhoran/union_2 Authored-by: Paddy Horan <paddyhoran@hotmail.com> Signed-off-by: Neville Dipale <nevilledips@gmail.com>