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From Nishadi Kirielle <ndimeshi...@cse.mrt.ac.lk>
Subject Re: Bitmaps field entries
Date Sat, 24 Dec 2016 06:36:38 GMT
Thanks a lot for the guide.

Regards
Nishadi

On 20 December 2016 at 12:10, Gopal Vijayaraghavan <gopalv@apache.org>
wrote:

>
> > After creating the bitmap indexes, the '_bitmaps' field of all the
> records
> > are similar and indicate an array as follows;
>
> This is a direct deserialized object of EWAHBitMap (writeInt(),
> writeLong() as a sequence of arrays)
>
> https://github.com/lemire/javaewah/blob/master/src/main/
> java/com/googlecode/javaewah/EWAHCompressedBitmap.java#L608
>
> I really wish it was a bit more robust to read/use, but the bitmaps are
> more of an internal structure
>
> org.apache.hadoop.hive.ql.index.bitmap.BitmapObjectOutput;
>
> with no real docs.
>
> Cheers,
> Gopal
>
>
>


-- 
Nishadi Kirielle

Undergraduate
University of Moratuwa - Sri Lanka

Mobile : +94 70 204 5934
Blog : nishadikirielle.wordpress.com

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