Re: hfile v2 and bloomfilter

2016-05-15 Thread Jerry He 
Another good place to look at is the design doc attached to the HFile v2
JIRA:
https://issues.apache.org/jira/browse/HBASE-3857

Jerry


On Sun, May 15, 2016 at 5:12 PM, Stack  wrote:

> On Sun, May 15, 2016 at 5:05 AM, Shushant Arora  >
> wrote:
>
> > In Hfile v2 block level blommfilters are stored inb scanned section along
> > with data block and leaf index.
> >
> > Load on open section contains bloomfilter data . Whats this bloom filter
> > data?
> >
>
> To what are you referring to when you say 'on open section'?
>
>
> > 1.Does it contains index of bloomchunks stored in scanned section ?
> > 2.What does meta blocks of non scanned section contains.
> > 3.Does leaf level index contains row keys only? Will having tall table vs
> > wide table affect the size of leaf index.
> >
> >
> You might be better off reading the code. Have you tried? You'd get a more
> trustworthy answer (smile).
>
> St.Ack
>
>
>
> > Thanks!
> >
>

Re: hfile v2 and bloomfilter

2016-05-15 Thread Stack 
On Sun, May 15, 2016 at 5:05 AM, Shushant Arora 
wrote:

> In Hfile v2 block level blommfilters are stored inb scanned section along
> with data block and leaf index.
>
> Load on open section contains bloomfilter data . Whats this bloom filter
> data?
>

To what are you referring to when you say 'on open section'?


> 1.Does it contains index of bloomchunks stored in scanned section ?
> 2.What does meta blocks of non scanned section contains.
> 3.Does leaf level index contains row keys only? Will having tall table vs
> wide table affect the size of leaf index.
>
>
You might be better off reading the code. Have you tried? You'd get a more
trustworthy answer (smile).

St.Ack



> Thanks!
>

hfile v2 and bloomfilter

2016-05-15 Thread Shushant Arora 
In Hfile v2 block level blommfilters are stored inb scanned section along
with data block and leaf index.

Load on open section contains bloomfilter data . Whats this bloom filter
data?
1.Does it contains index of bloomchunks stored in scanned section ?
2.What does meta blocks of non scanned section contains.
3.Does leaf level index contains row keys only? Will having tall table vs
wide table affect the size of leaf index.

Thanks!