@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        MissingReplicaMoveState that = (MissingReplicaMoveState) o;
        return Objects.equals(targetLogDir, that.targetLogDir);
    }
@param targetLogDir        The log directory that we wanted the replica to move to.
tools/src/main/java/org/apache/kafka/tools/reassign/MissingReplicaMoveState.java