Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # user >> Question about HFile seeking


Copy link to this message
-
Re: Question about HFile seeking
What you seeing Varun (or think you are seeing)?
St.Ack
On Thu, May 16, 2013 at 2:30 PM, Stack <[EMAIL PROTECTED]> wrote:

> On Thu, May 16, 2013 at 2:03 PM, Varun Sharma <[EMAIL PROTECTED]> wrote:
>
>> Or do we use some kind of demarcator b/w rows and columns and timestamps
>> when building the HFile keys and the indices ?
>>
>
> No demarcation but in KeyValue, we keep row, column family name, column
> family qualifier, etc., lengths and offsets so the comparators on ly
> compare pertinent bytes.
>
> If you doing a prefix scan w/ row1c, we should be starting the scan at
> row1c, not row1 (or more correctly at the row that starts the block we
> believe has a row1c row in it...).
>
> St.Ack
>