Function when

fdbserver/TagPartitionedLogSystem.actor.cpp:3135–3163

	try {
		loop choose {
			when(TLogRejoinRequest req = waitNext(rejoinRequests)) {
				int pos = -1;
				for (int i = 0; i < logServers.size(); i++) {
					if (logServers[i].first->get().id() == req.myInterface.id()) {
						pos = i;
						logsWaiting.erase(logServers[i].first->get().id());
						break;
					}
				}
				if (pos != -1) {
					TraceEvent("TLogJoinedMe", dbgid)
					    .detail("TLog", req.myInterface.id())
					    .detail("Address", req.myInterface.commit.getEndpoint().getPrimaryAddress().toString());
					if (!logServers[pos].first->get().present() ||
					    req.myInterface.commit.getEndpoint() !=
					        logServers[pos].first->get().interf().commit.getEndpoint()) {
						TLogInterface interf = req.myInterface;
						filterLocalityDataForPolicyDcAndProcess(logServers[pos].second, &interf.filteredLocality);
						logServers[pos].first->setUnconditional(OptionalInterface<TLogInterface>(interf));
					}
					lastReply[req.myInterface.id()].send(TLogRejoinReply{ false });
					lastReply[req.myInterface.id()] = req.reply;
				} else {
					TraceEvent("TLogJoinedMeUnknown", dbgid)
					    .detail("TLog", req.myInterface.id())
					    .detail("Address", req.myInterface.commit.getEndpoint().getPrimaryAddress().toString());
					req.reply.send(true);
				}
			}
			when(wait(warnTimeout)) {
				for (const auto& logId : logsWaiting) {
					TraceEvent(SevWarnAlways, "TLogRejoinSlow", dbgid)