This preview shows page 1. Sign up to view the full content.
Unformatted text preview: cquire the lock for write(k,88)? Does T have to wait for acquire the lock for x =read(i)? If the answer to any of the questions is yes, specify at what time the transaction can acquire the lock. Do transactions T and V eventually commit? If the answer is yes, in what order? (b) ‐ Describe the information written to the recovery file on behalf of these transactions if strict 2‐phase locking is used. Problem 3 (20 Points): (a) A number of processes are collaborating in a group communication. Initially, P joins the group and knows nothing about other members in the group. Then, it learns that Q and R and W have joined the group. Then it learns that X joins the group. A while later it lea...
View Full Document
This document was uploaded on 11/11/2013.
- Fall '13