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From Lee Parker <...@socialagency.com>
Subject Re: timestamp not found
Date Thu, 15 Apr 2010 15:47:50 GMT
When I am verifying the columns in the mutation map before sending it to
cassandra, none of the timestamps are 0.  I have had a difficult time
recreating the error in a controlled environment so I can see the mutation
map that was actually sent.

Lee Parker
lee@spredfast.com

[image: Spredfast]
On Thu, Apr 15, 2010 at 10:45 AM, Mike Malone <mike@simplegeo.com> wrote:

> Looks like the timestamp, in this case, is 0. Does Cassandra allow zero
> timestamps? Could be a bug in Cassandra doing an implicit boolean coercion
> in a conditional where it shouldn't.
>
> Mike
>
>
> On Thu, Apr 15, 2010 at 8:39 AM, Lee Parker <lee@socialagency.com> wrote:
>
>> We are currently migrating about 70G of data from mysql to cassandra.  I
>> am occasionally getting the following error:
>>
>> Required field 'timestamp' was not found in serialized data! Struct:
>> Column(name:74 65 78 74, value:44 61 73 20 6C 69 65 62 20 69 63 68 20 76 6F
>> 6E 20 23 49 6E 61 3A 20 68 74 74 70 3A 2F 2F 77 77 77 2E 79 6F 75 74 75 62
>> 65 2E 63 6F 6D 2F 77 61 74 63 68 3F 76 3D 70 75 38 4B 54 77 79 64 56 77 6B
>> 26 66 65 61 74 75 72 65 3D 72 65 6C 61 74 65 64 20 40 70 6A 80 01 00 01 00,
>> timestamp:0)
>>
>> The loop which is building out the mutation map for the batch_mutate call
>> is adding a timestamp to each column.  I have verified that the time stamp
>> is there for several calls and I feel like if the logic was bad, i would see
>> the error more frequently.  Does anyone have suggestions as to what may be
>> causing this?
>>
>> Lee Parker
>> lee@spredfast.com
>>
>> [image: Spredfast]
>>
>
>

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