Not really
What version are you on? Do you have pending compactions and no ongoing
compactions?
/Marcus
On Wed, Sep 24, 2014 at 11:35 PM, Donald Smith
donald.sm...@audiencescience.com wrote:
On one of our nodes we have lots of pending compactions (499).In the
past we’ve seen pending
Version 2.0.9. We have 11 ongoing compactions on that node.
From: Marcus Eriksson [mailto:krum...@gmail.com]
Sent: Thursday, September 25, 2014 12:45 AM
To: user@cassandra.apache.org
Subject: Re: Would warnings about overlapping SStables explain high pending
compactions?
Not really
What
On one of our nodes we have lots of pending compactions (499).In the past
we've seen pending compactions go up to 2400 and all the way back down again.
Investigating, I saw warnings such as the following in the logs about
overlapping SStables and about needing to run nodetool scrub on a
...@blackbirdit.com
Subject: Re: high pending compactions
Date: Mon, 9 Jun 2014 14:11:36 -0500
To: user@cassandra.apache.org
Bean: org.apache.cassandra.db.CompactionManager
also nodetool compactionstats gives you how many are in the queue + estimate
of how many will be needed.
in 1.1 you will OOM far
PM, S C as...@outlook.com wrote:
Thank you all for quick responses.
--
From: clohf...@blackbirdit.com
Subject: Re: high pending compactions
Date: Mon, 9 Jun 2014 14:11:36 -0500
To: user@cassandra.apache.org
Bean: org.apache.cassandra.db.CompactionManager
also
As Jake suggested, you could firstly increase
compaction_throughput_mb_per_sec and concurrent_compactions to suitable
values if system resource is allowed. From my understanding, major
compaction will internally acquire lock before running compaction. In your
case, there might be a major
Thank you all for valuable suggestions. Couple more questions,
How to check the compaction queue? MBean/C* system log ?What happens if the
queue is full?
From: colinkuo...@gmail.com
Date: Mon, 9 Jun 2014 18:53:41 +0800
Subject: Re: high pending compactions
To: user@cassandra.apache.org
As Jake
Date: Mon, 9 Jun 2014 18:53:41 +0800
Subject: Re: high pending compactions
To: user@cassandra.apache.org
As Jake suggested, you could firstly increase
compaction_throughput_mb_per_sec and concurrent_compactions to suitable
values if system resource is allowed. From my understanding, major
Thank you all for quick responses.
From: clohf...@blackbirdit.com
Subject: Re: high pending compactions
Date: Mon, 9 Jun 2014 14:11:36 -0500
To: user@cassandra.apache.org
Bean: org.apache.cassandra.db.CompactionManager
also nodetool compactionstats gives you how many are in the queue + estimate
I am using Cassandra 1.1 (sorry bit old) and I am seeing high pending
compaction count. pending tasks: 67 while active compaction tasks are not
more than 5. I have a 24CPU machine. Shouldn't I be seeing more compactions? Is
this a pattern of high writes and compactions backing up? How can I
23
On Sunday, June 8, 2014, S C as...@outlook.com wrote:
I am using Cassandra 1.1 (sorry bit old) and I am seeing high pending
compaction count. pending tasks: 67 while active compaction tasks are
not more than 5. I have a 24CPU machine. Shouldn't I be seeing more
compactions? Is this a
Have you verified that these aren't stuck compactions? e.g. even under
no load, they don't go away?
-Bill
On 06/08/2014 12:32 PM, Jake Luciani wrote:
23
On Sunday, June 8, 2014, S C as...@outlook.com
mailto:as...@outlook.com wrote:
I am using Cassandra 1.1 (sorry bit old) and I am
How to check if there are any stuck compactions?
Date: Sun, 8 Jun 2014 12:43:45 -0400
From: wkat...@cs.rutgers.edu
To: user@cassandra.apache.org
Subject: Re: high pending compactions
Have you verified that these aren't stuck compactions? e.g. even under
no load, they don't go away
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