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Posted to user@cassandra.apache.org by "Hiller, Dean" <De...@nrel.gov> on 2013/03/14 15:44:41 UTC
13k pending compaction tasks but ZERO running?
How do I get my node to run through the 13k pending compaction tasks? I had to use iptables to take the ring out of the cluster for now and he is my only node still on STCS. In cassandra-cli, it shows LCS but on disk, I see a 36Gig file(ie. Must be STCS still). How can I get the 13k pending tasks to start running?
Nodetool compactionstats ….
pending tasks: 13793
Active compaction remaining time : n/a
Thanks,
Dean
Re: 13k pending compaction tasks but ZERO running?
Posted by Michael Theroux <mt...@yahoo.com>.
One more warning (which I'm sure you know, but in case others see this), nodetool compact does a major compaction for STS, and is in general, not recommended for STS. I only ran it on the tables we've converted to LCS.
-Mike
On Mar 14, 2013, at 11:26 AM, Michael Theroux wrote:
> Hi Dean,
>
> I saw the same behavior when we switched from STCS to LCS on a couple of our tables. Not sure why it doesn't proceed immediately (I pinged the list, but didn't get any feedback). However, running nodetool compact <keyspace> <table> got things moving for me.
>
> -Mike
>
> On Mar 14, 2013, at 10:44 AM, Hiller, Dean wrote:
>
>> How do I get my node to run through the 13k pending compaction tasks? I had to use iptables to take the ring out of the cluster for now and he is my only node still on STCS. In cassandra-cli, it shows LCS but on disk, I see a 36Gig file(ie. Must be STCS still). How can I get the 13k pending tasks to start running?
>>
>> Nodetool compactionstats ….
>> pending tasks: 13793
>> Active compaction remaining time : n/a
>>
>> Thanks,
>> Dean
>
Re: 13k pending compaction tasks but ZERO running?
Posted by "Hiller, Dean" <De...@nrel.gov>.
Duh me. I forgot to mention I ran "nodetool compact <k> <cf>" and it was
done in 45 seconds and I still had a 36G file(darn, I am usually better
about putting the detail in my emailsŠI thought I added that). I also
went into JMX and then did it there.
I ran it again and it took 15 seconds. My script is as follows so that I
know the timesŠit's too bad nodetool doesn't log times for all tools they
have. If I have time, I should just do a pull request on that.
#!/bin/bash
date > compacttimes.txt
nodetool compact databus5 nreldata >> compacttimes.txt
date >> compacttimes.txt
Thanks,
Dean
On 3/14/13 9:26 AM, "Michael Theroux" <mt...@yahoo.com> wrote:
>Hi Dean,
>
>I saw the same behavior when we switched from STCS to LCS on a couple of
>our tables. Not sure why it doesn't proceed immediately (I pinged the
>list, but didn't get any feedback). However, running nodetool compact
><keyspace> <table> got things moving for me.
>
>-Mike
>
>On Mar 14, 2013, at 10:44 AM, Hiller, Dean wrote:
>
>> How do I get my node to run through the 13k pending compaction tasks?
>>I had to use iptables to take the ring out of the cluster for now and he
>>is my only node still on STCS. In cassandra-cli, it shows LCS but on
>>disk, I see a 36Gig file(ie. Must be STCS still). How can I get the 13k
>>pending tasks to start running?
>>
>> Nodetool compactionstats Š.
>> pending tasks: 13793
>> Active compaction remaining time : n/a
>>
>> Thanks,
>> Dean
>
Re: 13k pending compaction tasks but ZERO running?
Posted by Michael Theroux <mt...@yahoo.com>.
Hi Dean,
I saw the same behavior when we switched from STCS to LCS on a couple of our tables. Not sure why it doesn't proceed immediately (I pinged the list, but didn't get any feedback). However, running nodetool compact <keyspace> <table> got things moving for me.
-Mike
On Mar 14, 2013, at 10:44 AM, Hiller, Dean wrote:
> How do I get my node to run through the 13k pending compaction tasks? I had to use iptables to take the ring out of the cluster for now and he is my only node still on STCS. In cassandra-cli, it shows LCS but on disk, I see a 36Gig file(ie. Must be STCS still). How can I get the 13k pending tasks to start running?
>
> Nodetool compactionstats ….
> pending tasks: 13793
> Active compaction remaining time : n/a
>
> Thanks,
> Dean