Liya Fan created ARROW-6863:

             Summary: [Java] Provide parallel searcher
                 Key: ARROW-6863
             Project: Apache Arrow
          Issue Type: New Feature
          Components: Java
            Reporter: Liya Fan
            Assignee: Liya Fan

For scenarios where the vector is large and the a low response time is 
required, we need to search the vector in parallel to improve the 

This issue tries to provide a parallel searcher for the equality semantics (the 
support for ordering semantics is not ready yet, as we need a way to distribute 
the comparator).

The implementation is based on multi-threading.

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