Can a juror be discharged from a jury for failing to show good cause?

The court may discharge a juror who, upon a showing of good cause, cannot perform his or her duty. ( 1089.) The court makes whatever inquiry is reasonably necessary' once notified that there may be cause to discharge a juror. (People v. Bradford (1997) 15 Cal.4th 1229, 1348.) In Bradford, reports of juror hostility toward the defendant did not require discharge because [t]he record does not in any way demonstrate an inability on the part of the jurors to perform their functions. (Id. at p. 1352.)