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From Owen Kim <ohech...@gmail.com>
Subject Re: MIssing data in range query
Date Tue, 07 Oct 2014 22:11:53 GMT
Sigh, it is a bit grating. I (genuinely) appreciate your acknowledgement of
that. Though, I didn't intend for the question to be "about" supercolumns.

It is possible I'm hitting an odd edge case though I'm having trouble
reproducing the issue in a controlled environment since there seems to be a
timing element to it, or at least it's not consistently happening. I
haven't been able to reproduce it on a single node test cluster. I'm moving
on to test a larger one now.

On Tue, Oct 7, 2014 at 2:39 PM, Robert Coli <rcoli@eventbrite.com> wrote:

> On Tue, Oct 7, 2014 at 2:03 PM, Owen Kim <ohechkay@gmail.com> wrote:
>
>> I'm aware. I've had the system up since pre-composite columns and haven't
>> had the cycles to do a major data and schema migration.
>>
>> And that's not "slightly" non-responsive.
>>
>
> "There may be unknown bugs in the code you're using, especially because no
> one else uses it" is in fact slightly responsive. While I'm sure it does
> grate to be told that one should not be using a feature one cannot choose
> to not-use, I consider "don't use them" responsive to every question about
> supercolumns since 2010, unless the asker pre-emptively states they know
> this fact. I assure you that my meta-response is infinitely more responsive
> than the total non-response you were otherwise likely to receive...
>
> ... aaaaaaanyway ...
>
> Probably you are just hitting an edge case in the 1.2 era rewrite of
> supercolumns which no one else has ever encountered because no one uses
> them. For the record, I do not believe either of your hypotheses (key cache
> or slice queries having different guarantees) are likely to be implicated.
> One of them is trivial to test : create a test CF with the key cache
> disabled and try to repro there.
>
> Instead of attempting to debug by yourself, or on the user list (which
> will be full of people not-using supercolumns) I suggest filing an JIRA
> with reproduction steps, and then mentioning the URL on this thread for
> future googlers.
>
> =Rob
>
>
>

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