How to boost merge rate for `_forcemerge`


(Brad Jungsu Heo) #1

Hi, all.

I'm running ES 2.3 and currently testing _forcemerge.

The problem which I have is that merge rate for _forcemerge is too slooow.

My test ES cluster is idle (there is no indexing, no searching), but 1 hour later since _forcemerge has been started, only 1,400 segments are merged. and only 1 cpu is running and Disk I/O is low.

It seems like index.merge.scheduler.max_thread_count or indices.store.throttle.max_bytes_per_sec is not working.

Is there any way to increase merge rate for _forcemerge?

Thanks in advanced.


(system) #2

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