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Originally Posted by appleguru
(Post 27037545)
I don't think anyone is saying it is trivial... But I also don't think it needs to be that hard either. I see a few possible solutions to this problem (I am by no means an expert here):
1) DB failover: redundant DBs that automatically replicate and self-elect a master. Requires 3 or more members so you can have a quorum during master election. During normal operations, all reads and writes happen to an appointed master instance. All instances send "are you still online?" Heartbeat messages to each other to verify status, and slaves replicate data from the master as soon as it is written. If the master ever goes offline, the remaining members vote and elect a new master, automatically resuming operations. 2) blockchain-like distributed ledger. Biggest problem I see with this I current implementations is significant time delay while transactions are verified (proof of work currently takes lots of time, by design). But on the upside, even "untusted" parties can help contribute. Doesn't make a lot of sense for an airline. 3) fully redundant DBs: similar to a raid disk array. Writes happen across multiple DBs in parallel. Writes are verified for congurancy across all mirrors when a read occurs. If a mirror drops, the set is degraded, but still remains functional until the mirror comes back online. Biggest downside to this approach is the additional time needed to verify reads, which may not scale fantastically. But then again, we're talking milliseconds... If you have to wait a few extra ms to confirm that seat/ticket/weight balance call/whatever, it's probally not the end of he world. I think it's more than fair to feel like whatever happened is unacceptable (and it is very unacceptable in this day and age), yet at the same time understand the position they are in. The bottom line is whatever happened is preventable, given time and money. Every decision to build redundancy in their systems isn't free, and they have to weigh the cost vs. benefit. Obviously a day after a major incident, the natural inclination is to spend every dime of profit to make sure this never happens again, but I guarantee you that setiment will change in some people's minds on Virginia Ave in three years, assuming they don't have another major, public incident. It's natural and is in many cases, human nature. I've been turned down for money multiple times to make systems more redundant and it was really frustrating. In some cases, the exact component I want to harden failed, and in some cases, the component I wanted to harden never failed, and there were a couple times where something I didn't think of failed. Bottom line it was my responsibity to ensure uptime. In terms of why they haven't issued a statement, what would you like them to say, and how would it change anything? I think as a customer, it's quite clear this isn't weather, terrorism, ATC, or other act of god. Further, as a customer, it's not my job to care exactly what happened. Are they really going to promise it will never happen again? They can't guarantee that. I have my opinions working in the industry I do, but the main reason I've been on this thread since yesterday morning is because I'm flying tomorrow and I'm hoping I get where I need to get (DFW) some semblance of on time. |
From other posts, hotels in the ATL area were fully booked so its likely DL couldn't offer anything even if they tried by that point.
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Originally Posted by rylan
(Post 27037672)
From other posts, hotels in the ATL area were fully booked so its likely DL couldn't offer anything even if they tried by that point.
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Originally Posted by rylan
(Post 27037672)
From other posts, hotels in the ATL area were fully booked so its likely DL couldn't offer anything even if they tried by that point.
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I've lost a lot of respect for Delta over the last couple of days. My flights yesterday went fine, but my 18-y.o. daughter is still stranded in ATL. Last night at 2:00a, after 10 hours of delays and I've lost count of how many flight cancellations, the Diamond desk was saying that the earliest they could get her into her destination airport is Wednesday. Meanwhile, pax in her shoes are left to fend for themselves for two nights at the ATL airport with no food vouchers, hotels, showers, etc. etc. Delta's response is "there are 30,000 people stranded there so there's nothing we can do." I hope there are at least a couple of competent class-action lawyers among the stranded.
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Originally Posted by xx2kewll
(Post 27037589)
Did you read some documentation on exactly what the problem was that none of us have seen yet?
The amount of "I can't believe they didn't have a backup system!" naivety and general speculation about something no one here clearly has knowledge of us appalling. Can we keep all the armchair IT quarterbacking out of this until we have some sort of definitive information about what happened and have someone who can start a post with "I AM an expert"? Is DL now "too big to fail" (as in too big to be allowed to fail) in our airline market, a bit like some of our largest financial sector behemoths? |
Originally Posted by Miesque
(Post 27037743)
Yeah, I bet the remaining capacity got booked in those airport area hotels pretty fast at full freight (or points where applicable). The nanosecond I find out I am not going anywhere that evening I am going to be trying to procure a room.
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Did DL just cancel travel for UAMs scheduled to fly today even on flights that have taken off or are taking off today?
It seems so, and almost systematic at that. Not a nice surprise. |
Originally Posted by GUWonder
(Post 27037748)
Well, we already know what outcome DL's experts delivered (or at least didn't manage to avoid). And it wasn't pretty yesterday. And it still isn't all smooth yet.
Is DL now "too big to fail" (as in too big to be allowed to fail) in our airline market, a bit like some of our largest financial sector behemoths? My point is that it's improper to speculate on remediation, even in the most most generic sense (which has been done over and over in this thread: "more money + time = no failing!"), until we actually know what happened. Yes, obviously something bad happened, but let's see what that actually was. And I don't think I've seen any mention here of the systems likely in play here being hosted by Travelport (i.e. with a corresponding SLA) rather than Delta: "Travelport will continue to run the system infrastructure for the Delta platform in its Atlanta data center." http://news.delta.com/delta-and-trav...responsibility |
Originally Posted by WWads
(Post 27037761)
I sometimes prebook refundable rooms if it looks like there will be bad weather, especially if I'm connecting through ATL in the evening.
IMHO; hotels are worse than airlines at overselling because they don't offer this type of rate and they still overbook their rooms. Airlines at least have a plausible argument that they sell refundable tickets of which a certain percentage no-show and collect refunds after departure. |
Originally Posted by kenn0223
(Post 27037829)
What hotels offer fully-refundable rooms? Most I ever see require cancellation the day before arrival (or at least by late afternoon the day of arrival). If hotels offered the equivalent of a refundable airline ticket (i.e. refundable at any time even after the scheduled date) I'd be all over it.
IMHO; hotels are worse than airlines at overselling because they don't offer this type of rate and they still overbook their rooms. Airlines at least have a plausible argument that they sell refundable tickets of which a certain percentage no-show and collect refunds after departure. |
Gate agent was making all standbys gate check their bags last night on our delayed flight at 2140, despite the GIDS screen showing 53 open seats. The standby list according to GIDS was only 17 deep! One lady literally couldn't check her bag and was forced to take her original flight delayed until 0130!
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Originally Posted by sleuth
(Post 27037870)
Gate agent was making all standbys gate check their bags last night on our delayed flight at 2140, despite the GIDS screen showing 53 open seats. The standby list according to GIDS was only 17 deep! One lady literally couldn't check her bag and was forced to take her original flight delayed until 0130!
At the same time, seems like a simple matter of putting the tag on, and getting on board with it anyway. |
Originally Posted by DiverDave
(Post 27037123)
Heck, first 3 morning flights today out of HSV all canceled. :(
The only arrivals into HSV from ATL yesterday were all Delta Connection flights. David So Delta can't get me anywhere today, because the United flights filled up with the other refugees. In fact, they can't even get me close and their rebooking for tomorrow is wretched. I had to call my company agent and I am flying the dAArk side today. It cost my company about $900 in extra travel costs minus a refund from Delta of around $200 or so. The GA said I should get ORC and a $200 voucher. Do you folks normally request ORC on the phone or via delta.com? I guess I will figure out how to use the voucher for my next company trip, but will worry that whenever the voucher shows up. Thank you, David |
Delta is very fortunate a line of thunderstorms hasn't hit any of their hubs during this debacle.
I hope everything is back to normal by tomorrow night when I fly out. |
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