Hi
Just want to validate my estimation for a C* cluster which should have around 3 TB of usable storage.
Assuming a RF of 3 and SizeTiered Compaction Strategy.
Is it correct, that SizeTiered Compaction Strategy needs (in the worst case) 50% free disc space during compaction?
So this would
Hi!
This is basically right, but:
1. How do you know the 3TB storage will be 3TB on cassandra? This depends
how the data is serialized, compressed and how often it changes and it
depends on your compaction settings
2. 50% free space on STCS is only required if you do a full compaction of a
single
Adding to what Benjamin said..
It is hard to estimate disk space if you are using STCS for a table where rows
are updated frequently leading to lot of fragmentation. STCS may also lead to
scenarios where tombstones are not evicted for long times. You may go live and
everything goes well for mont
On Wed, Jan 25, 2017 at 11:20 AM, Xiaolei Li wrote:
> Thanks for the advice!
>
> I do export a lot via JMX already. But I couldn't find the equivalent of the
> Status column (Up/Down + Normal/Leaving/Joining/Moving) from the status
> output. Does anyone know if those are available via JMX?
I've b
Very cool!
On Thu, Jan 26, 2017 at 8:53 AM Eric Evans
wrote:
> On Wed, Jan 25, 2017 at 11:20 AM, Xiaolei Li
> wrote:
> > Thanks for the advice!
> >
> > I do export a lot via JMX already. But I couldn't find the equivalent of
> the
> > Status column (Up/Down + Normal/Leaving/Joining/Moving) from
Hi All,
Hope I can get some help here. We're using Cassandra for services, and recently
we're adding UI support.
With Cassandra, what are the options for ad hoc query/search similar to RDBMS?
We love the features of Cassandra but it seems it's a known "weakness" that it
doesn't come with strong
> With Cassandra, what are the options for ad hoc query/search similar to
RDBMS?
Your best options are Spark w/ the DataStax connector or Presto. Cassandra
isn't built for ad-hoc queries so you need to use other tools to make it
work.
On Thu, Jan 26, 2017 at 2:22 PM Yu, John wrote:
> Hi All,
>
Nice! Will take a look.
Best,
x.
On Thu, Jan 26, 2017 at 10:30 AM, Jonathan Haddad wrote:
> Very cool!
>
> On Thu, Jan 26, 2017 at 8:53 AM Eric Evans
> wrote:
>
>> On Wed, Jan 25, 2017 at 11:20 AM, Xiaolei Li
>> wrote:
>> > Thanks for the advice!
>> >
>> > I do export a lot via JMX already. B
Thanks a lot. Mind sharing a couple of points where you feel it’s better than
the alternatives.
Regards,
John
From: Jonathan Haddad [mailto:j...@jonhaddad.com]
Sent: Thursday, January 26, 2017 2:33 PM
To: user@cassandra.apache.org
Subject: [External] Re: Cassandra ad hoc search options
> With C
