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From Edward Capriolo <edlinuxg...@gmail.com>
Subject Re: how stable is 1.0 these days?
Date Wed, 29 Feb 2012 16:52:02 GMT
On Wed, Feb 29, 2012 at 10:35 AM, Thibaut Britz
<thibaut.britz@trendiction.com> wrote:
> Any more feedback on larger deployments of 1.0.*?
>
> We are eager to try out the new features in production, but don't want to
> run into bugs as on former 0.7 and 0.8 versions.
>
> Thanks,
> Thibaut
>
>
>
> On Tue, Jan 31, 2012 at 6:59 AM, Ben Coverston <ben.coverston@datastax.com>
> wrote:
>>
>> I'm not sure what Carlo is referring to, but generally if you have done,
>> thousands of migrations you can end up in a situation where the migrations
>> take a long time to replay, and there are some race conditions that can be
>> problematic in the case where there are thousands of migrations that may
>> need to be replayed while a node is bootstrapped. If you get into this
>> situation it can be fixed by copying migrations from a known good schema to
>> the node that you are trying to bootstrap.
>>
>> Generally I would advise against frequent schema updates. Unlike rows in
>> column families the schema itself is designed to be relatively static.
>>
>> On Mon, Jan 30, 2012 at 2:14 PM, Jim Newsham <jnewsham@referentia.com>
>> wrote:
>>>
>>>
>>> Could you also elaborate for creating/dropping column families?  We're
>>> currently working on moving to 1.0 and using dynamically created tables, so
>>> I'm very interested in what issues we might encounter.
>>>
>>> So far the only thing I've encountered (with 1.0.7 + hector 1.0-2) is
>>> that dropping a cf may sometimes fail with UnavailableException.  I think
>>> this happens when the cf is busy being compacted.  When I sleep/retry within
>>> a loop it eventually succeeds.
>>>
>>> Thanks,
>>> Jim
>>>
>>>
>>> On 1/26/2012 7:32 AM, Pierre-Yves Ritschard wrote:
>>>>
>>>> Can you elaborate on the composite types instabilities ? is this
>>>> specific to hector as the radim's posts suggests ?
>>>> These one liner answers are quite stressful :)
>>>>
>>>> On Thu, Jan 26, 2012 at 1:28 PM, Carlo Pires<carlopires@gmail.com>
>>>>  wrote:
>>>>>
>>>>> If you need to use composite types and create/drop column families on
>>>>> the
>>>>> fly you must be prepared to instabilities.
>>>>>
>>>
>>
>>
>>
>> --
>> Ben Coverston
>> DataStax -- The Apache Cassandra Company
>>
>

I would call 1.0.7 rock fricken solid. Incredibly stable. It has been
that way since I updated to 0.8.8  really. TBs of data, billions of
requests a day, and thanks to JAMM, memtable type auto-tuning, and
other enhancements I rarely, if ever, find a node in a state where it
requires a restart. My clusters are beast-ing.

There always is bugs in software, but coming from a guy who ran
cassandra 0.6.1.Administration on my Cassandra cluster is like a
vacation now.

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