Thanks for responses. Nate - I haven't tried changing compaction_throughput_mb_per_sec. In my cassandra.yaml I had set it to 32 to begin with. Do you think 32 can be too much if the cassandra get once in a while writes but when it gets writes its a big chunk together?
On Thu, Sep 19, 2013 at 12:33 PM, sankalp kohli <kohlisank...@gmail.com>wrote: > You cannot start level compaction. It will run based on data in each > level. > > > On Thu, Sep 19, 2013 at 9:19 AM, Nate McCall <n...@thelastpickle.com>wrote: > >> As opposed to stopping compaction altogether, have you experimented with >> turning down compaction_throughput_mb_per_sec (16mb default) and/or >> explicitly setting concurrent_compactors (defaults to the number of cores, >> iirc). >> >> >> On Thu, Sep 19, 2013 at 10:58 AM, rash aroskar >> <rashmi.aros...@gmail.com>wrote: >> >>> Hi, >>> In general leveled compaction are I/O heavy so when there are bunch of >>> writes do we need to stop leveled compactions at all? >>> I found the nodetool stop COMPACTION, which states it stops compaction >>> happening, does this work for any type of compaction? Also it states in >>> documents 'eventually cassandra restarts the compaction', isn't there a way >>> to control when to start the compaction again manually ? >>> If this is not applicable for leveled compactions in 1.2, then what can >>> be used for stopping/restating those? >>> >>> >>> >>> Thanks, >>> Rashmi >>> >> >> >
