accumulo-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Josh Elser <>
Subject Re: Record index within a Table
Date Tue, 04 Dec 2012 17:45:55 GMT
I was thinking a little more on the subject, and convinced myself that I 
was wrong.

Since many files on disk correspond to a tablet, the best you can get is 
the index of a key-value pair in a given file for a tablet. To get a 
sorted stream of key-value pairs for this tablet (to compute index 
offset for a key in a tablet), a merged read is performed over all of 
those files. Local key offset for a file is meaningless as it does not 
imply the correct offset for a tablet.

On 12/3/12 9:30 PM, Josh Elser wrote:
> Accumulo doesn't expose any internal offsets of Key-Value pairs 
> through the API. While it might be able to extrapolate some of this 
> knowledge from the underlying structure of Accumulo, that isn't the 
> intent of what Accumulo is trying to provide.

View raw message