Github user laurentgo commented on a diff in the pull request:

    https://github.com/apache/drill/pull/363#discussion_r52083113
  
    --- Diff: 
exec/java-exec/src/main/java/org/apache/drill/exec/physical/EndpointAffinity.java
 ---
    @@ -96,6 +96,42 @@ public boolean isAssignmentRequired() {
       }
     
       @Override
    +  public int hashCode() {
    +    final int prime = 31;
    +    int result = 1;
    +    long temp;
    +    temp = Double.doubleToLongBits(affinity);
    +    result = prime * result + (int) (temp ^ (temp >>> 32));
    +    result = prime * result + ((endpoint == null) ? 0 : 
endpoint.hashCode());
    +    return result;
    +  }
    +
    +  @Override
    +  public boolean equals(Object obj) {
    +    if (this == obj) {
    +      return true;
    +    }
    +    if (obj == null) {
    +      return false;
    +    }
    +    if (!(obj instanceof EndpointAffinity)) {
    +      return false;
    +    }
    +    EndpointAffinity other = (EndpointAffinity) obj;
    +    if (Double.doubleToLongBits(affinity) != 
Double.doubleToLongBits(other.affinity)) {
    +      return false;
    +    }
    +    if (endpoint == null) {
    +      if (other.endpoint != null) {
    +        return false;
    +      }
    +    } else if (!endpoint.equals(other.endpoint)) {
    --- End diff --
    
    DrillbitEndpoint is a protobuf Message, so the equals/hashCode methods are 
provided by protobuf API (by AbstractMessage if I'm correct)


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