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From Joe Witt <>
Subject Re: Ingest Original data from External system by data's dependent condition
Date Tue, 13 Oct 2015 14:56:32 GMT
Lot of details passing by here but...

Given formats A,B...Z coming in the following capabilities are
generally desired:
1) Extract attributes of each event
2) Make routing decisions on each event based on those extracted attributes
3) Deliver raw/unmodified data to some endpoint (like HDFS)
4) Convert/Transform data to some normalized format (and possibly schema too).
5) Deliver converted data to some endpoint.

Steps #1 and #4 involve (naturally) custom work for formats that are
not something we can readily support out of the box such as XML, JSON,
AVRO, etc...  Even the workaround suggested really only works for the
case where you know the original format well enough and we can support
it which means we'd like not have needed the workaround anyway.  So,
the issue remains that custom work is required for #1 and #4 cases...
Now, if you have packed formats that you think we could support please
let us know and we can see about some mechanism of dealing with those
formats generically - would be a power user tool of course but
avoiding custom work is great when achievable with the right user
experience/capability mix.


On Tue, Oct 13, 2015 at 10:06 AM, yejug <> wrote:
> Ok,
> Thank you guys for assistance.
> Looks like Joe's suggestion more appropriate for me, but there is one BUT,
> in case 'ExtractXYZAttributes' we must implement implicit parsing of encoded
> message and cannot reuse this logic, e.g. if we will want do actual  XXX ->
> Json (for example json =)) convertion in future.
> With 99,9% in my case, except AVRO there will be more inputs (as minimum
> msgpack and some custom binary formats), which must be parsed as well as
> stored in the original input format
> So I think, except ConvertXXXToJson + Andrew's workaround there no more
> alternatives for me now
> Thanks again
> --
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