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

Switch to Threaded View
Accumulo >> mail # user >> What priority for purge filter

Copy link to this message
Re: What priority for purge filter
If you want your filter to make decisions based on older versions, do
it before (lower than 20). If you want it to make decisions based on
the current version(s), do it after (higher than 20). I think that's
what Billie was saying.

Christopher L Tubbs II
On Mon, Dec 9, 2013 at 12:02 PM, Terry P. <[EMAIL PROTECTED]> wrote:
> Greetings all,
> With Accumulo v1.4.2, we have a purge filter/iterator that extents RowFilter
> and I have a question about what priority it should be implemented with. I
> see the default VersioningIterator runs at priority 20.
> Our purge iterator is designed to suppress (scan time) or remove (majc or
> minc compactions) rows based on the value in a column. Is it more efficient
> to run our purge iterator at a higher priority than the VersioningIterator,
> or does it really matter? Our VersioningIterator maxVersions is set to the
> default of 1 which is what we want/need.
> Thanks in advance,
> Terry