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I actively encourage the editing of any of my Question, Answer, and Tag Wiki content on all StackExchange sites except for meta sites. In other words, if you spot an inaccuracy or wish to clarify or improve a post of mine, add sources, etc., PLEASE do so! It will greatly benefit the net welfare and knowledge capital of the community. I am writing this here just in case you are of the misconception that answers are like forum posts, indelible articles authored by a single person.

The edit function is there for a reason, folks. I promise to never lash out at someone for substantially editing content originally authored by me, as long as your edit is constructive. If you don't yet have the site privilege to make instantaneous edits and I see your edit in the suggestion queue, I will do my best to either accept your edit outright, or incorporate the most useful parts of your edit into my post by "editing your edit".

If you have been told before that you shouldn't substantially edit others' answers, or if you've been the victim of polemic as a result of doing so, I'd like to apologize for that behavior. I think it's very counterproductive; our community is much worse-off for that kind of attitude.

Future visitors are best served by being able to read one cohesive, well-edited answer with sources to get the sum-total of the community's best knowledge in a single answer. A string of answers or comments each with their own nuggets of truth is much harder to decipher than one cohesive text. With the edit function, thanks to the fact that we each bring our own perspectives and unique knowledge, it is possible for us to author one cohesive text that eliminates the natural tendency of comment strings, replacing it with high-quality works that rival those of Wikipedia.

BTW, I don't approve of most edits on meta sites because I very rarely find questions on meta sites which deal purely in factual matters, so my answers are generally just my personal feelings on the matter.


Mar
19
comment Password required when trying to ssh into a server using Cygwin on Windows 7
OK, and are you sure you have the public key on the client side stored as id_rsa in ~/.ssh with similarly restrictive permissions?
Mar
19
comment Password required when trying to ssh into a server using Cygwin on Windows 7
Yeah, try uncommenting and setting PasswordAuthentication no. As for the permissions issue, check it in Windows Explorer. Try to go to c:\cygwin64\home\git. If you don't have access, but you are an administrator on the system, try taking ownership of it (in Windows Explorer).
Mar
19
comment Password required when trying to ssh into a server using Cygwin on Windows 7
See also: cygwin.com/cygwin-ug-net/ntsec.html
Mar
19
comment Password required when trying to ssh into a server using Cygwin on Windows 7
You didn't mention whether you turned off password authentication in /etc/ssh/sshd_config. My hunch is you still won't be permitted to login at all and get immediately rejected when you turn it on, but that'll help troubleshoot by eliminating the possibility that it's asking you for a password because you allow password authentication. Also, verify with ls -la that the permissions of ~/.ssh and ~/.ssh/authorized_keys are what you set them to. If it's world writable, you may need to tweak the underlying NTFS permissions using Windows to deny other users.
Mar
18
comment How do I escape google functional characters
Related: stackoverflow.com/questions/4685615/…
Mar
8
comment Windows are acting as if they are “always on top”
Thanks for figuring this out! This was my problem too.
Mar
3
comment Will Windows 8 install on MBR?
There are edge-case exceptions to every rule of thumb.
Feb
23
asked Mapping Excel sheet to XML Schema - using a column for multiple attributes
Feb
21
comment How many times can I format a hard disk?
@Johnny Your initial thought that it's a conservative number is usually correct. For example, although the write endurance of the Samsung 850 Pro is rated at 150 TB, Samsung internally has had many drives breach the 1 Petabyte barrier, with a handful of them reaching several (up to 8!!!!) petabytes, without significant signs of disk failure aside from a small handful of cells gracefully wearing out. It probably depends in some strange way on your typical workload, write patterns, temperature, whether the unit incurs shock damage (as in a laptop) or is in a sterilized environment, etc.
Feb
20
awarded  Good Answer
Feb
9
comment Is it normal behavior for the Reduce tasks to wait until the Map tasks finish?
The reducer seems to be starting speculatively while the map is still ongoing, but when it encounters a new data point matching a key that's already been reduced, it has to throw out those results and start over. That's why your reduce % seems to be going down. It makes sense.
Feb
9
comment Is it normal behavior for the Reduce tasks to wait until the Map tasks finish?
I guess the Partitioner you are using is sending Partitions to the Reduce function before Map is complete. If that's how it's working, it is possible that the Reducer might start working before the Map phase is completely done. This is an optimization and you should be happy it is there. You aren't going to get the rest of the Reduce to complete in parallel before the Map is done, though. That's bringing the cart before the horse.
Feb
9
comment Is it normal behavior for the Reduce tasks to wait until the Map tasks finish?
The performance of your use of MapReduce is entirely dependent on what your Map and Reduce functions are doing. In one person's implementation, Map may take 0.1 microseconds, but Reduce might take 3 years. In a completely different scenario, the timings may be flipped. In yet another scenario, both operations may take about the same length of time. It is entirely dependent on what those functions are doing.
Feb
9
revised Is it normal behavior for the Reduce tasks to wait until the Map tasks finish?
added 725 characters in body
Feb
9
answered Is it normal behavior for the Reduce tasks to wait until the Map tasks finish?
Feb
9
comment PC permenently freezes in unusual pattern
Also, don't try gaming on unsupported hardware. AMD hasn't released new updates for HD4600 for several years now. If you're using this for anything more than a basic web browsing/email machine, I would strongly advise to upgrade all your hardware.
Feb
9
comment PC permenently freezes in unusual pattern
When was the last time you reinstalled the OS?
Feb
9
awarded  Good Answer
Feb
4
awarded  Nice Answer
Feb
4
comment How many times can I format a hard disk?
TIL that a full format does not overwrite every sector on disk. Still, this looks like something that could have been a tiny edit to my answer. I've gone ahead and edited my answer accordingly. Also, it's noteworthy that the moving parts of HDDs do wear out, even if the sectors on the platter don't. An HDD wears out just like an SSD; it just wears out differently. To test this, sit a brand new HDD in a cool, dry place in an electrostatic bag for 20 years, and take a new HDD and run it for those same years. The disk that ran will have failed; the one in the bag won't. Thus, HDDs wear out.