@ViewChanged
public void recalculateMinViewIdOnTopologyChange(ViewChangedEvent vce) {
// don't do anything if this cache is not clustered - view changes are global
if (clustered) {
log.debugf("View changed, recalculating minViewId");
currentViewId = vce.getViewId();
calculateMinViewId(-1);
}
}
protected final void recalculateMinViewIdIfNeeded(CacheTransaction removedTransaction) {
if (removedTransaction == null)
throw new IllegalArgumentException("Transaction cannot be null!");
if (currentViewId != CACHE_STOPPED_VIEW_ID) {
// Assume that we only get here if we are clustered.
int removedTransactionViewId = removedTransaction.getViewId();
if (removedTransactionViewId < minTxViewId) {
log.tracef(
"A transaction has a view ID (%s) that is smaller than the smallest transaction view ID (%s) this node knows about! This can happen if a concurrent thread recalculates the minimum view ID after the current transaction has been removed from the transaction table.",
removedTransactionViewId, minTxViewId);
} else if (removedTransactionViewId == minTxViewId
&& removedTransactionViewId < currentViewId) {
// We should only need to re-calculate the minimum view ID if the transaction being
// completed
// has the same ID as the smallest known transaction ID, to check what the new smallest is,
// and this is
// not the current view ID.
calculateMinViewId(removedTransactionViewId);
}
}
}
