Alex,

Merges are only triggered by document updates, so when you start adding or 
changing data the system will check merge policies and decide if it should 
merge or not. In the meantime you can force a merge for the entire database or 
particular forests on the admin GUI.

Yours,
Damon

--
Damon Feldman
Sr. Principal Consultant, MarkLogic

From: [email protected] 
[mailto:[email protected]] On Behalf Of Alex Milowski
Sent: Tuesday, June 25, 2013 2:16 PM
To: General Mark Logic Developer Discussion
Subject: [MarkLogic Dev General] Merge Policy / Large Delete

After deleting a large amount of content, I have large forests (100+GB) on disk 
with large amounts deleted fragments (60+ GB).  I didn't notice any merging 
going on and I expected this to clear itself up eventually.

After waiting for quite awhile (many days), it didn't do anything by itself.

The merge policy for the database is:

   merge priority = lower, max size = 0, min size = 1024, min ration = 2, 
timestamp = 0

The database has three forests that are roughly balanced.  As such, there is 
180GB of deleted fragments.

I've gone in a manually requested the forests to merge, doing them one at a 
time.

Is there a reason why the merge didn't happen all by itself?

--
--Alex Milowski
"The excellence of grammar as a guide is proportional to the paucity of the
inflexions, i.e. to the degree of analysis effected by the language
considered."

Bertrand Russell in a footnote of Principles of Mathematics
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