hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jean-Marc Spaggiari <jean-m...@spaggiari.org>
Subject Re: Never ending major compaction?
Date Wed, 02 Jan 2013 02:14:09 GMT
Yes, I'm running on 0.94.3. The last major compaction ran yesterday.
It's almost daily. That's why I was surprise it took so long. I mean,
I'm only compacting regions who moved. So it should be pretty quick.
But was not the case. It took about 6h to complete. Strange. Maybe
something went wrong when I stopped/started hbase.

also, there was almost no activity on the network nor on the CPUs. I
will have to add disks monitoring on Ganglia to see if I was limited
by IOs...

I looked at the regions logs and everything was fine. It was showing
some compaction information every few seconds.


2013/1/1, Ted <yuzhihong@gmail.com>:
> You're on hbase 0.94.3 , right ?
> When was the last time major compaction ran ?
> Compaction is region server activity so you should be able to find some clue
> in region server log.
> Cheers
> On Jan 1, 2013, at 11:42 AM, Jean-Marc Spaggiari <jean-marc@spaggiari.org>
> wrote:
>> Hi,
>> I have a table, with about 200 000 raws, keys is string[64] (ish) and
>> value is string[512].
>> It's splitted over 16 regions located on 7 regionservers.
>> So it's not a big table, and there is a lot of horsepower behind it.
>> I asked a major_compaction few hours ago. Let's say, about 5 hours
>> ago. and it's still compacting! But all servers activities seems to be
>> null. CPU usage is almost 0.
>> There is nothing on the master logs.
>> How can I see what's going on? Is there a way to see the compaction
>> queue?
>> JM

View raw message