private void processFragmentResponseDependencies(FragmentResponseMessage response) {
int depCount = response.getTableCount();
for (int i = 0; i < depCount; i++) {
int dependencyId = response.getTableDependencyIdAtIndex(i);
VoltTable payload = response.getTableAtIndex(i);
assert (payload != null);
// if we're getting a dependency, i hope we know about it
assert (m_missingDependencies != null);
WorkUnit w = m_missingDependencies.get(dependencyId);
if (w == null) {
String msg =
"Unable to find WorkUnit for dependency: "
+ dependencyId
+ " as part of TXN: "
+ txnId
+ " received from execution site: "
+ response.getExecutorSiteId();
hostLog.warn(msg);
// throw new FragmentFailureException();
return;
}
// if the node is recovering, it doesn't matter if the payload matches
if (response.isRecovering()) {
w.putDummyDependency(dependencyId, response.getExecutorSiteId());
} else {
w.putDependency(
dependencyId, response.getExecutorSiteId(), payload, m_site.getSiteTracker());
}
if (w.allDependenciesSatisfied()) {
handleWorkUnitComplete(w);
}
}
}
void processFragmentWork(
FragmentTaskMessage ftask, HashMap<Integer, List<VoltTable>> dependencies) {
assert (ftask.getFragmentCount() > 0);
FragmentResponseMessage response = m_site.processFragmentTask(this, dependencies, ftask);
if (response.getStatusCode() != FragmentResponseMessage.SUCCESS) {
if (m_missingDependencies != null) m_missingDependencies.clear();
m_readyWorkUnits.clear();
if (m_isCoordinator) {
// throw an exception which will back the runtime all the way
// to the stored procedure invocation call, triggering undo
// at that point
if (response.getException() != null) {
throw response.getException();
} else {
throw new FragmentFailureException();
}
} else {
m_needsRollback = true;
m_done = true;
}
}
if (m_isCoordinator && (response.getDestinationSiteId() == response.getExecutorSiteId())) {
processFragmentResponseDependencies(response);
} else {
m_mbox.send(response.getDestinationSiteId(), response);
// If we're not the coordinator, the transaction is read-only,
// and this was the final task, then we can try to move on after
// we've finished this work.
if (!isCoordinator() && isReadOnly() && ftask.isFinalTask()) {
m_done = true;
}
}
}