-Re: Major vs Minor compactions
Stack 2013-05-30, 02:56
On Wed, May 29, 2013 at 1:27 PM, Varun Sharma <[EMAIL PROTECTED]> wrote:
> I am working on some compaction coprocessors for a column family with
> versions set to 1. I am using the preCompact hook to wrap a scanner around
> the compaction scanner.
> I wanted to know what to expect from the minor compaction output. Can I
> assume the following:
> 1) Versions for each cell will be 1
> 2) Delete markers will be retained
> 3) Corresponding versions older than the delete markers shall be removed
> Am I missing anything here ?
How you going to ensure your cp fires ONLY on a minor compaction?
In your version of hbase, minors can be promoted to be majors if all files
make it into the selection; how you going to deal?
Yeah, if minors, deletes (currently) are retained (unless promoted to
At a guess, the versions should be weeded by the time your cp gets a whack
at the content (don't take my word for it though).