You can set the gc_grace_secs as a little value and force major compaction
after the row is expired. After then please check whether the row still
exists.
There are some downsides to major compactions. (There have been some recent
discussions).
You can provoke (some) minor compactions by:
Minor compaction will remove the tombstones if the row only exists in the
sstable being compaction.
Are these very wide rows that are constantly written to ?
Cheers
p.s. cassandra 1.0 really does rock.
-
Aaron Morton
Freelance Developer
@aaronmorton
No, these were not wide rows. They are rows that formerly had one or 2
columns. The columns are deleted but the empty rows dont go away, even after
gc_grace_secs.
So if I understand... the empty row will only be removed after gc_grace if
enough compactions have occurred so that all the column
On Thu, May 31, 2012 at 9:31 AM, Curt Allred c...@mediosystems.com wrote:
No, these were not wide rows. They are rows that formerly had one or 2
columns. The columns are deleted but the empty rows dont go away, even
after gc_grace_secs.
The empty row goes away only during a compaction after
This is an old thread from December 27, 2011. I interpret the yes answer to
mean you do not have to explicitly delete an empty row after all of its columns
have been deleted, the empty row (i.e. row key) will automatically be deleted
eventually (after gc_grace). Is that true? I am not
do not delete empty rows. It refreshes tombstone and they will never expire.
Compaction should delete empty rows once gc_grace_seconds is passed, right?
Yes.
--
/ Peter Schuller (@scode, http://worldmodscode.wordpress.com)
Compaction should delete empty rows once gc_grace_seconds is passed, right?
Yes.
But just to be extra clear: Data will not actually be removed once the
row in question participates in compaction. Compactions will not be
actively triggered by Cassandra for tombstone processing reasons.
--
/
But just to be extra clear: Data will not actually be removed once the
row in question participates in compaction. Compactions will not be
actively triggered by Cassandra for tombstone processing reasons.
leveled compaction is really good for this because it compacts often
