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From Stefan Kaufmann <sta...@gmail.com>
Subject Re: uncomplete RangeSlices
Date Wed, 18 Aug 2010 10:04:13 GMT
Sorry - forgot the version: 0.6.4

On Wed, Aug 18, 2010 at 11:52 AM, Stefan Kaufmann <staeff@gmail.com> wrote:

> During my tests, I found some strange bootstrap + get Range Slice behavior.
>
> In my testing environment im creating Datasets which look like those:
> sampleDPUIDforTestingIssues1/00000000000
>  -> value = 123456789
> sampleDPUIDforTestingIssues1/00000999999
>  -> value = 123456789
>
> i create 1 Million of those Keys (increasing number at the end) and then I
> have a query-script which uses get RangeSlices (10 000 Keys per Slices) in a
> loop to query all keys. The script checks if all key's could be queried.
>
> When I use the Bootstrap option to add a new node, mye query script shows
> me a large amount of missing keys. (looks like the same key-range from one
> node in the ring). However, when I try to query one single key out of the
> range (not using slices), I can read the value without any problem.
>
>
> My Script says:
> Following errors for sampleDPUIDforTestingIssues1 collection found:
> 471886 - 736000 are missing.
>
> This is the ring configuration:
> Address       Status     Load
> Range                                      Ring
>
> sampleDPUIDforTestingIssues1/00000736000
> 10.20.10.112  Up         252.67 MB
> qaDOmXnF48Q4sZks                                      |<--|
> 10.20.10.111  Up         252.67 MB
> sampleDPUIDforTestingIssues1/00000471885   |   |
> 10.20.10.110  Up         252.66 MB
> sampleDPUIDforTestingIssues1/00000736000   |-->|
>
>
> When I add new nodes, by coping the storage/Keyspace data instead of
> bootstrapping - everything works fine.
>
> I searched the Issues-DB, and I found those two old ones..
> (I'm not sure, if they really have to do something with this)
>
> https://issues.apache.org/jira/browse/CASSANDRA-682
> https://issues.apache.org/jira/browse/CASSANDRA-902
>

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