...@gmail.com]
Sent: 19 февраля 2014 г. 10:21
To: user@cassandra.apache.org
Subject: Re: Turn off compression (1.2.11)
I am new and trying to learn Cassandra.
Based on my understanding of the problem, almost 2Gb is taken up just for the
compression headers heap.
And 100MB per SSTable, and about 30,000
On Tue, Feb 18, 2014 at 2:51 PM, Plotnik, Alexey wrote:
> My SSTable size is 100Mb. Last time I removed leveled manifest compaction
> was running for 3 months
>
At 3TB per node, you are at, and probably exceeding the maximum size anyone
suggests for Cassandra 1.2.x.
Add more nodes?
=Rob
.@eventbrite.com]
> *Sent:* 19 февраля 2014 г. 6:24
> *To:* user@cassandra.apache.org
> *Subject:* Re: Turn off compression (1.2.11)
>
>
>
> On Mon, Feb 17, 2014 at 4:35 PM, Plotnik, Alexey
> wrote:
>
>
>
> As an aside, 1.2.0 beta moved a bunch of data related to
ent: 19 февраля 2014 г. 6:24
To: user@cassandra.apache.org
Subject: Re: Turn off compression (1.2.11)
On Mon, Feb 17, 2014 at 4:35 PM, Plotnik, Alexey
mailto:aplot...@rhonda.ru>> wrote:
As an aside, 1.2.0 beta moved a bunch of data related to compression off the
heap. If you were to try t
My SSTable size is 100Mb. Last time I removed leveled manifest compaction was
running for 3 months
From: Robert Coli [mailto:rc...@eventbrite.com]
Sent: 19 февраля 2014 г. 6:24
To: user@cassandra.apache.org
Subject: Re: Turn off compression (1.2.11)
On Mon, Feb 17, 2014 at 4:35 PM, Plotnik
Personally I think having compression on by default is the wrong choice.
Depending on your access patterns and row sizes the overhead of compression
can create more Garbage Collection and become your bottleneck before your
potentially bottleneck your disk (ssd disk)
On Tue, Feb 18, 2014 at 2:23 P
On Mon, Feb 17, 2014 at 4:35 PM, Plotnik, Alexey wrote:
> After analyzing Heap I saw this buffer has a size about 70KB per SSTable.
> I have more than 30K SSTables per node.
>
I'm thinking your problem is not compression, it's using the old 5mb
default for Level Compaction and having 30,000 SSTa
Each compressed SSTable uses additional transfer buffer in
CompressedRandomAccessReader instance.
After analyzing Heap I saw this buffer has a size about 70KB per SSTable. I
have more than 30K SSTables per node.
I want to turn off a compression for this column family to save some Heap. How
can I
