Manoj Babu 2012-12-05, 13:13
Jean-Marc Spaggiari 2012-12-05, 13:31
Doug Meil 2012-12-05, 15:46
Nick Dimiduk 2012-12-05, 18:14
Manoj Babu 2012-12-06, 03:14
Anoop Sam John 2012-12-06, 04:35
Manoj Babu 2012-12-06, 06:44
ramkrishna vasudevan 2012-12-06, 05:15
Anoop John 2012-12-05, 14:17
Manoj Babu 2012-12-05, 13:03
Leonid Fedotov 2012-12-05, 17:03
-Re: Reg:delete performance on HBase table
Mohammad Tariq 2012-12-05, 16:34
When a Delete command is issued , no data is actually deleted
instantaneously. Instead a tombstone marker is set, making the deleted
cells effectively invisible.
The tombstone markers are only deleted during major compactions (which
compacts all store files to a single one), because in order to prove that a
tombstone marker has no effect HBase needs to look at all cells.
HBase periodically removes deleted cells during compactions.
On Wed, Dec 5, 2012 at 6:33 PM, Manoj Babu <[EMAIL PROTECTED]> wrote:
> Hi All,
> I am having doubt on delete performance inHBase table.
> I have 190 million rows in oracle table it hardly took 4hours to delete it,
> If i am having the same 190 million rows in HBase table how much time by
> approx Hbase will take to delete the rows(based on row key range) and
> how internally HBase handles delete?
> Thanks in advance!