[ https://issues.apache.org/jira/browse/ARROW-8009?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Liya Fan updated ARROW-8009: ---------------------------- Summary: [Java] Fix the hash code methods for BitVector (was: [Java] Fix the hash code mehods for BitVector) > [Java] Fix the hash code methods for BitVector > ---------------------------------------------- > > Key: ARROW-8009 > URL: https://issues.apache.org/jira/browse/ARROW-8009 > Project: Apache Arrow > Issue Type: Bug > Components: Java > Reporter: Liya Fan > Assignee: Liya Fan > Priority: Major > > The current hash code methods of BitVector are based on implementations in > BaseFixedWidthVector, which rely on the type width of the vector. > For BitVector, the type width is 0, so the underlying data is not actually > used when computing the hash code. That means, the hash code will always be > 0, no matter if the underlying data is null or not, and no matter if the > underlying bit is 0 or 1. > We fix this by overriding the methods in BitVector. -- This message was sent by Atlassian Jira (v8.3.4#803005)