712
712
read-write conflict with the insert of any tuple into that index by a
713
713
concurrent serializable transaction. If certain patterns of read-write
714
714
conflicts are detected among a set of concurrent serializable
716
716
integrity. When the flag is set, it indicates that the index access
717
717
method implements finer-grained predicate locking, which will tend to
718
718
reduce the frequency of such transaction cancellations.