tree 49e57a8aaf648a2edb08f84ee479021c57ceef79
parent 32efa598196c4f5da01910f576304312c7bfae41
author Domino Valdano <dvaldano@pivotal.io> 1583280380 -0500
committer Orhan Kislal <okislal@pivotal.io> 1583367549 -0500

MFVSketch: Remove duplicate results on GPDB

JIRA: MADLIB-1412

mfvsketch merge function did not filter out duplicate entries if
a value is in the mfv list for multiple segments.

This commit fixes the issue by keeping a list of added values and
filtering out duplicate entries.

Co-authored-by: Orhan Kislal <okislal@pivotal.io>