ExceptionHookImpl#shouldRetry(Throwable) controls globally that all actions should be retried on LockFailureExceptions. Specifying retrying on LockFailureExceptions also on individual calls with RetryHelper is redundant and can be removed. Signed-off-by: Edwin Kempin <ekempin@google.com> Change-Id: I58420cb1b90e2955402337a00944bbf04f6aefbe