Merge policy

[Arkadi Colson]

Hi

As you can see in the screenshot above in the oldest segments there are 
a lot of deletions. In total the shard has about 26% deletions. How can 
I get rid of them so the index will be smaller again?
Can this only be done with an optimize or does it also depend on the 
merge policy? If it also depends also on the merge policy which one 
should I choose then?

Thanks!

BR,
Arkadi