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Qlik QREP Exam - Topic 2 Question 5 Discussion

Posted by Flo on Aug 03, 2024 at 01:52 AM

The connection to the source endpoint is unavailable over several days. The log files contain only 2 hours of data before being deleted. Which Is the safest way to create a consistent state in the target endpoint?

Suggested Answer: A

When the connection to the source endpoint is unavailable for an extended period, and the log files are limited to only 2 hours of data before being deleted, the safest way to ensure a consistent state in the target endpoint is to use the Reload Target Run option (A). This approach is recommended because it allows for a complete refresh of the target data, ensuring that it is in sync with the source once the connection is re-established.

The Reload Target Run option is designed to handle situations where the replication logs are not sufficient to recover the replicated state due to extended outages or log retention policies. By reloading the target, you can be confident that the data reflects the current state of the source, without relying on potentially incomplete change logs.

Starting processing from a fixed date and time (B) or recovering from a locally stored checkpoint would not be reliable if the logs do not cover the entire period of the outage. Resuming the task and ignoring warnings (D) could lead to inconsistencies due to missed changes.

Therefore, the Reload Target Run option is the safest method to create a consistent state in the target endpoint under these circumstances1.


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30 comments · newest first
MA
Margarett 11 months ago
Not sure about C, what if the checkpoint is outdated?
FA
Fannie 11 months ago
I’m leaning towards B, starting from a fixed date could work too.
LO
Lorrine 11 months ago
Wait, can we really ignore warnings? Sounds risky!
CE
Cecil 11 months ago
Definitely agree with C, makes the most sense!
CR
Cristina 11 months ago
I think option C is the best choice here.
VI
Virgie 12 months ago
I definitely recall that resuming and ignoring warnings is risky. We should avoid that option for sure.
KI
Kimberlie 12 months ago
I feel like starting from a fixed date could work, but what if there are changes that happened after the log files were deleted?
SH
Shantay 12 months ago
I think the "Recover from a locally stored checkpoint" option might be the best choice, but I need to double-check the implications of that.
WA
Walton 1 year ago
I remember we discussed the importance of consistency in the target endpoint, but I'm not sure which option is the safest.
SH
Sherill 1 year ago
I'm a bit confused by the options. I'll need to review the details more closely to decide which one is the best approach.
GE
Gerald 1 year ago
I'm leaning towards option B - starting processing changes from a fixed date and time. That seems like the safest approach to ensure consistency.
AL
Alex 1 year ago
Okay, let's see. The key seems to be finding a way to create a consistent state in the target endpoint given the limited data in the log files.
AD
Adelaide 1 year ago
Hmm, this is a tricky one. I'll need to think carefully about the options and the potential risks involved.
RO
Ronnie 1 year ago
Option C, recovering from a locally stored checkpoint, could be a good solution if we have a recent and reliable checkpoint available.
BL
Blossom 1 year ago
B for sure. The manifest file is where you declare all the activities, services, and other components that make up your Android app. Gotta know that one!
CA
Carry 2 years ago
I think resuming the task and ignoring warnings is the best option in this scenario.
LE
Lezlie 2 years ago
I would go with starting processing changes from a fixed date and time.
AL
Alease 2 years ago
I disagree, I believe recovering from a locally stored checkpoint is safer.
GE
Georgeanna 2 years ago
I think the safest way is to use Reload Target Run option.
AN
Angella 2 years ago
I think resuming the task and ignoring warnings is the best option in this scenario.
LO
Louis 2 years ago
Option B seems like the way to go. Who needs recent data when you can just go back in time? Time travel is the future, I tell you!
ME
Melita 2 years ago
↳ replying to Louis
I agree, going back in time to a fixed date and time seems like a reliable way to create a consistent state in the target endpoint.
HE
Helene 2 years ago
↳ replying to Louis
I think option B is the safest choice. It's better to start processing changes from a fixed date and time.
AD
Adell 2 years ago
I would go with starting processing changes from a fixed date and time.
AD
Adell 2 years ago
I disagree, I believe recovering from a locally stored checkpoint is safer.
PA
Paz 2 years ago
Eve
KE
Kendra 2 years ago
↳ replying to Paz
C) Recover from a locally stored checkpoint
TE
Teresita 2 years ago
↳ replying to Paz
B) Start processing changes from a fixed date and time
TE
Tesha 2 years ago
↳ replying to Paz
A) Use Reload Target Run option
CA
Catalina 2 years ago
I think the safest way is to use Reload Target Run option.
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