Thanks, I just modified the schema on the worse offending column family (as 
determined by the .json) from 10MB to 200MB.

Should I kick off a compaction on this cf now/repair?/scrub?

Thanks

-michael

From: Віталій Тимчишин <tiv...@gmail.com<mailto:tiv...@gmail.com>>
Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" 
<user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" 
<user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: Re: persistent compaction issue (1.1.4 and 1.1.5)

I've started to use LeveledCompaction some time ago and from my experience this 
indicates some SST on lower levels than they should be. The compaction is 
going, moving them up level by level, but total count does not change as new 
data goes in.
The numbers are pretty high as for me. Such numbers mean a lot of files (over 
100K in single directory) and a lot of thinking for compaction executor to 
decide what to compact next. I can see numbers like 5K-10K and still thing this 
is high number. If I were you, I'd increase sstable_size_in_mb 10-20 times it 
is now.

2012/9/17 Michael Kjellman 
<mkjell...@barracuda.com<mailto:mkjell...@barracuda.com>>
Hi All,

I have an issue where each one of my nodes (currently all running at 1.1.5) is 
reporting around 30,000 pending compactions. I understand that a pending 
compaction doesn't necessarily mean it is a scheduled task however I'm confused 
why this behavior is occurring. It is the same on all nodes, occasionally goes 
down 5k pending compaction tasks, and then returns to 25,000-35,000 compaction 
tasks pending.

I have tried a repair operation/scrub operation on two of the nodes and while 
compactions initially happen the number of pending compactions does not 
decrease.

Any ideas? Thanks for your time.

Best,
michael


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Best regards,
 Vitalii Tymchyshyn

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