[Java] ListVector hashCode() is not correct

[asfimport]

Current implement is not correct:

for (int i = start; i < end; i++) {
  hash = 31 * vector.hashCode(i);
}

Should be something like:

hash = 31 * hash + vector.hashCode(i);

Reporter: Ji Liu / @tianchen92
Assignee: Ji Liu / @tianchen92

PRs and other links:

• GitHub Pull Request #5082

_{Note: This issue was originally created as ARROW-6234. Please see the migration documentation for further details.}

[asfimport]

Micah Kornfield / @emkornfield:
Issue resolved by pull request 5082
#5082