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From Harsh J <ha...@cloudera.com>
Subject Re: SequenceFile sync marker uniqueness
Date Thu, 23 May 2013 19:53:32 GMT
SequenceFiles use a 16 digit MD5 (computed based on a UID and writer ~init
time, so pretty random). For the rest of my answer, I'll prefer not to
repeat what Martin's already said very well here:
http://search-hadoop.com/m/VYVra2krg5t1 (point #2) over the Avro lists for
the Avro DataFile format which uses a similar technique.


On Thu, May 23, 2013 at 11:34 PM, John Lilley <john.lilley@redpoint.net>wrote:

>  How does SequenceFile guarantee that the sync marker does not appear in
> the data?****
>
> John****
>
> ** **
>



-- 
Harsh J

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