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From Kais Ahmed <k...@neteck-fr.com>
Subject Re: Cassandra read reapair
Date Tue, 21 May 2013 08:55:39 GMT
> Checking you do not mean the row key is corrupt and cannot be read.
Yes, i can read it but all read don't return the same result except for CL
ALL

> By default in 1.X and beyond the default read repair chance is 0.1, so
it's only enabled on 10% of requests.
You are right read repair chance is set to 0.1, but i launched a read
repair which did not solved the problem. Any idea?

>What CL are you writing at ?
All write are in CL QUORUM

thank you aaron for your answer.


2013/5/21 aaron morton <aaron@thelastpickle.com>

> Only some keys of one CF are corrupt.
>
> Checking you do not mean the row key is corrupt and cannot be read.
>
> I thought using CF ALL, would correct the problem with READ REPAIR, but by
> returning to CL QUORUM, the problem persists.
>
> By default in 1.X and beyond the default read repair chance is 0.1, so
> it's only enabled on 10% of requests.
>
> In the absence of further writes all reads (at any CL) should return the
> same value.
>
> What CL are you writing at ?
>
> Cheers
>
> -----------------
> Aaron Morton
> Freelance Cassandra Consultant
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On 19/05/2013, at 1:28 AM, Kais Ahmed <kais@neteck-fr.com> wrote:
>
> Hi all,
>
> I encountered a consistency problem one some keys using phpcassa and
> Cassandra 1.2.3 since a server crash
>
> Only some keys of one CF are corrupt.
>
> I lauched a nodetool repair that successfully completed but don't correct
> the issue.
>
>
>
> When i try to get a corrupt Key with :
>
> CL ONE, the result contains 7 or 8 or 9 columns
>
> CL QUORUM, result contains 8 or 9 columns
>
> CL ALL, the data is consistent and returns always 9 columns
>
>
> I thought using CF ALL, would correct the problem with READ REPAIR, but by
> returning to CL QUORUM, the problem persists.
>
>
> Thank you for your help
>
>
>
>
>
>
>
>
>
>
>

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