l found out, actually the original form works fine, i.e. "by value.seqNum
== 1". but the error I got was due to the fact that the first "load"
command actually fails to load anything, i.e.
b is empty, so there is no schema for b, then any field does not exist.
On Mon, Sep 30, 2013 at 5:59 PM, Yang <teddyyyy...@gmail.com> wrote:
> I have a dataset written in Avro format,
> I read it using
>
> b = load 'myfile' using AvroStorage();
>
> describe b;
>
> it shows the following schema: it seems that at the root level, there are
> only 2 fields: key and value, the value for "value" field is actually a
> record too.
>
>
> b: {key: (guid: chararray,sessionSkey: long),value: (guid:
> chararray,sessionSkey: long,seqNum: int,sessionStartDt: long)}
>
>
> my question is, how can I address the seqNum field under "value", so that
> I could so filtering like this:
>
> c = filter b by value.seqNum == 1 ;
>
> ?
>
> thanks
> Yang
>
