// Pass a response through the duplicate counters.
public void handleInitiateResponseMessage(InitiateResponseMessage message) {
// All single-partition reads are short-circuit reads and will have no duplicate counter.
// SpScheduler will only see InitiateResponseMessages for SP transactions, so if it's
// read-only here, it's short-circuited. Avoid all the lookup below. Also, don't update
// the truncation handle, since it won't have meaning for anyone.
if (message.isReadOnly()) {
// the initiatorHSId is the ClientInterface mailbox. Yeah. I know.
m_mailbox.send(message.getInitiatorHSId(), message);
return;
}
final long spHandle = message.getSpHandle();
final DuplicateCounterKey dcKey = new DuplicateCounterKey(message.getTxnId(), spHandle);
DuplicateCounter counter = m_duplicateCounters.get(dcKey);
if (counter != null) {
int result = counter.offer(message);
if (result == DuplicateCounter.DONE) {
m_duplicateCounters.remove(dcKey);
m_repairLogTruncationHandle = spHandle;
m_mailbox.send(counter.m_destinationId, counter.getLastResponse());
} else if (result == DuplicateCounter.MISMATCH) {
VoltDB.crashLocalVoltDB("HASH MISMATCH: replicas produced different results.", true, null);
}
} else {
// the initiatorHSId is the ClientInterface mailbox. Yeah. I know.
m_repairLogTruncationHandle = spHandle;
m_mailbox.send(message.getInitiatorHSId(), message);
}
}
// Eventually, the master for a partition set will need to be able to dedupe
// FragmentResponses from its replicas.
public void handleFragmentResponseMessage(FragmentResponseMessage message) {
// Send the message to the duplicate counter, if any
DuplicateCounter counter =
m_duplicateCounters.get(new DuplicateCounterKey(message.getTxnId(), message.getSpHandle()));
if (counter != null) {
int result = counter.offer(message);
if (result == DuplicateCounter.DONE) {
m_duplicateCounters.remove(
new DuplicateCounterKey(message.getTxnId(), message.getSpHandle()));
m_repairLogTruncationHandle = message.getSpHandle();
FragmentResponseMessage resp = (FragmentResponseMessage) counter.getLastResponse();
// MPI is tracking deps per partition HSID. We need to make
// sure we write ours into the message getting sent to the MPI
resp.setExecutorSiteId(m_mailbox.getHSId());
m_mailbox.send(counter.m_destinationId, resp);
} else if (result == DuplicateCounter.MISMATCH) {
VoltDB.crashLocalVoltDB("HASH MISMATCH running multi-part procedure.", true, null);
}
// doing duplicate suppresion: all done.
return;
}
m_mailbox.send(message.getDestinationSiteId(), message);
}
