Liya Fan created ARROW-6888:
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Summary: [Java] Support copy operation for vector value comparators
Key: ARROW-6888
URL: https://issues.apache.org/jira/browse/ARROW-6888
Project: Apache Arrow
Issue Type: New Feature
Components: Java
Reporter: Liya Fan
Assignee: Liya Fan
In this issue, we provide copy operations for vector value comparators. This
operation creates another comparator with the same type and comparison logic.
This feature is useful in multi-threading scenarios where multiple threads uses
the comparator to perform their own task. In this scenario, we have no way of
making sure the compare method is thread safe. So a safe way is to create a new
comparator for each thread. The copy operation will support this.
An immediate application of this is the parallel searcher for ordering
semantics.
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