PROBLEM: (CFS.76473) (PATCH ID: TCR505-019)
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This patch fixes a problem with the Memory Channel API whereby a node
crashes holding an mc-api lock, under certain circumstances the lock
will not be released after the node crashes. For the problem to occur there
must be 3 or more nodes in the cluster and the node handling the cleanup
after a node crashes (known as the primary mapper) does not have the lock
allocated.