Hello,
I see maximum memory usage alerts in my system.log couple of times in a day
as INFO. So far I haven't seen any issue with db. Why those messages are
logged in system.log do we have any impact for reads/writes with those
warnings? And what nerd to be looked
INFO [RMI TCP
Hi all,
New to Cassandra, I'm trying to wrap my head around how dead nodes should be
revived.
Specifically, we deployed our cluster in Kubernetes, which means that nodes
that go down will lose their IP address. When restarted, it is possible that:
1. their IP address changes
2. their new IP
On Wed, Feb 6, 2019 at 5:47 AM Antoine d'Otreppe
wrote:
> Hi all,
>
> New to Cassandra, I'm trying to wrap my head around how dead nodes should
> be revived.
>
>
> Specifically, we deployed our cluster in Kubernetes, which means that
> nodes that go down will lose their IP address. When
Isn’t that a lot of SASI indexes for one table. Could you denormalize more to
reduce both columns per table and SASI indexes per table? Eight SASI indexes
on one table seems like a lot.
Kenneth Brotman
From: Peter Heitman [mailto:pe...@heitman.us]
Sent: Tuesday, February 05, 2019 6:59
Hello !
I am having a recurrent problem when trying to bootstrap a few new nodes.
Some general info :
- I am running cassandra 3.0.17
- We have about 30 nodes in our cluster
- All healthy nodes have between 60% to 90% used disk space on
/var/lib/cassandra
So I create a new node and
Can you give us the “nodetool tablehistograms”
Kenneth Brotman
From: Rahul Reddy [mailto:rahulreddy1...@gmail.com]
Sent: Wednesday, February 06, 2019 6:19 AM
To: user@cassandra.apache.org
Subject: Maximum memory usage
Hello,
I see maximum memory usage alerts in my system.log
Exactly. When you design your data model correctly you shouldn’t have to use
ALLOW FILTERING in the queries. That is not recommended.
Kenneth Brotman
From: Peter Heitman [mailto:pe...@heitman.us]
Sent: Wednesday, February 06, 2019 6:09 PM
To: user@cassandra.apache.org
Subject: Re: SASI
I was trying to get all the partition of a particular SSTable, i have tried
reading Index,db file i can read some part of it but not all of it , is
there any way to convert it to readable format?
Thanks
Pranay
HI All,
I need some recommendation on using two datacenters with one node in each
datacenter.
In our organization, We are trying to have two cassandra dataceters with
only 1 node on each side. From the preliminary investigation, I see
replication is happening but I want to know if we can use
You are completely right! My problem is that I am trying to port code for
SQL to CQL for an application that provides the user with a relatively
general search facility. The original implementation didn't worry about
secondary indexes - it just took advantage of the ability to create
arbitrarily
Hi Kunal,
The short answer is absolutely not; that’s not what Cassandra is for.
Cassandra is a distributed database for when you have to much data for one
machine.
Kenneth Brotman
From: Kunal [mailto:kunal.v...@gmail.com]
Sent: Wednesday, February 06, 2019 3:47 PM
To:
Yes, I "know" that allow filtering is a sign of a (possibly fatal)
inefficient data model. I haven't figured out how to do it correctly yet
On Thu, Feb 7, 2019, 7:59 AM Kenneth Brotman
wrote:
> Exactly. When you design your data model correctly you shouldn’t have to
> use ALLOW FILTERING in
The problem is you’re not using a query first design. I would recommend first
reading chapter 5 of Cassandra: The Definitive Guide by Jeff Carpenter and Eben
Hewitt. It’s available free online at this link
Not sure off hand why that is happening but could you try bootstrapping that
node from scratch again or try a different new node?
Kenneth Brotman
From: Léo FERLIN SUTTON [mailto:lfer...@mailjet.com.INVALID]
Sent: Wednesday, February 06, 2019 9:15 AM
To: user@cassandra.apache.org
Subject:
Yes, I have read the material. The problem is that the application has a
query facility available to the user where they can type in "(A = foo AND B
= bar) OR C = chex" where A, B, and C are from a defined list of terms,
many of which are columns in the mytable below while others are from other
Hey Kunal,
Can you add more details about the size of data, read/write throughput, what
are your latency expectations, etc? What do you mean by "performance" issue
with replication? Without these details it's a bit tough to answer your
questions.
Dinesh
On Wednesday, February 6, 2019,
Would it be possible for you to take a thread dump & logs and share them?
Dinesh
On Wednesday, February 6, 2019, 10:09:11 AM PST, Léo FERLIN SUTTON
wrote:
Hello !
I am having a recurrent problem when trying to bootstrap a few new nodes.
Some general info :
- I am running
Are you running any nodetool commands during that period? IIRC, this is a log
entry emitted by the BufferPool. It may be harm unless it's happening very
often or logging a OOM.
Dinesh
On Wednesday, February 6, 2019, 6:19:42 AM PST, Rahul Reddy
wrote:
Hello,
I see maximum memory
You also want to use Cassandra with a minimum of 3 nodes.
Dinesh
On Wednesday, February 6, 2019, 11:26:07 PM PST, dinesh.jo...@yahoo.com
wrote:
Hey Kunal,
Can you add more details about the size of data, read/write throughput, what
are your latency expectations, etc? What do you mean
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