@Override
public Future<Pair<Boolean, Long>> start() {
try {
prepareForFaultRecovery();
} catch (Exception e) {
tmLog.error(m_whoami + "failed leader promotion:", e);
m_promotionResult.setException(e);
m_promotionResult.done(m_maxSeenTxnId);
}
return m_promotionResult;
}
/** Send missed-messages to survivors. */
public void repairSurvivors() {
// cancel() and repair() must be synchronized by the caller (the deliver lock,
// currently). If cancelled and the last repair message arrives, don't send
// out corrections!
if (this.m_promotionResult.isCancelled()) {
tmLog.debug(m_whoami + "Skipping repair message creation for cancelled Term.");
return;
}
int queued = 0;
tmLog.debug(m_whoami + "received all repair logs and is repairing surviving replicas.");
for (Iv2RepairLogResponseMessage li : m_repairLogUnion) {
List<Long> needsRepair = new ArrayList<Long>(5);
for (Entry<Long, ReplicaRepairStruct> entry : m_replicaRepairStructs.entrySet()) {
if (entry.getValue().needs(li.getHandle())) {
++queued;
tmLog.debug(
m_whoami
+ "repairing "
+ CoreUtils.hsIdToString(entry.getKey())
+ ". Max seen "
+ entry.getValue().m_maxSpHandleSeen
+ ". Repairing with "
+ li.getHandle());
needsRepair.add(entry.getKey());
}
}
if (!needsRepair.isEmpty()) {
if (tmLog.isTraceEnabled()) {
tmLog.trace(
m_whoami
+ "repairing: "
+ CoreUtils.hsIdCollectionToString(needsRepair)
+ " with message: "
+ li.getPayload());
}
m_mailbox.repairReplicasWith(needsRepair, li.getPayload());
}
}
tmLog.debug(m_whoami + "finished queuing " + queued + " replica repair messages.");
m_promotionResult.done(m_maxSeenTxnId);
}
@Override
public boolean cancel() {
return m_promotionResult.cancel(false);
}