traceMask = ZooTrace.SERVER_PING_TRACE_MASK;
}
if (LOG.isTraceEnabled()) {
ZooTrace.logRequest(LOG, traceMask, 'E', request, "");
}
ProcessTxnResult rc = null;
synchronized (outstandingChanges) {
while (!outstandingChanges.isEmpty()
&& outstandingChanges.get(0).zxid <= request.zxid) {
ChangeRecord cr = outstandingChanges.remove(0);
if (cr.zxid < request.zxid) {