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From horschi <hors...@gmail.com>
Subject Re: CAS operation does not return value on failure
Date Mon, 09 May 2016 14:30:45 GMT
Update: It was actually the driver update (from 2.1.9 to 3.0.1) that solved
the issue. I reverted by C* Server back to 2.2 and my test is still ok.

On Mon, May 9, 2016 at 1:28 PM, horschi <horschi@gmail.com> wrote:

> I just retried with Cassandra 3.0.5 and it performs much better. Not a
> single of these illegal results.
>
> I guess my recommendation for anyone using CAS is: Upgrade to >= 3.x :-)
>
> On Wed, May 4, 2016 at 5:46 PM, horschi <horschi@gmail.com> wrote:
>
>> Hi,
>>
>> I am doing some testing on CAS operations and I am frequently having the
>> issue that my resultset says wasApplied()==false, but it does not contain
>> any value.
>>
>>
>> This behaviour of course leads to the following Exception when I try to
>> read it:
>>
>> Caused by: java.lang.IllegalArgumentException: value is not a column
>> defined in this metadata
>> at
>> com.datastax.driver.core.ColumnDefinitions.getAllIdx(ColumnDefinitions.java:273)
>> at
>> com.datastax.driver.core.ColumnDefinitions.getFirstIdx(ColumnDefinitions.java:279)
>> at
>> com.datastax.driver.core.ArrayBackedRow.getIndexOf(ArrayBackedRow.java:68)
>> at
>> com.datastax.driver.core.AbstractGettableData.getBytes(AbstractGettableData.java:131)
>>
>>
>>
>> My questions now are:
>>
>> Is it to be expected that a failing CAS operation sometimes does this?
>>
>> if yes: Shouldn't there a possibility on the driver side to handle this
>> in a better was, e.g. add a "hasColumn()" method or something to the
>> ResultSet?
>>
>> if no: Is that perhaps a symptom to a greater issue in cassandra?
>>
>>
>> kind regards,
>> Christian
>>
>> PS: I also appreciate general feedback on the entire C* CAS topic :-)
>>
>>
>>
>

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