On Mon, Feb 26, 2018 at 8:21 AM, Jai Bheemsen Rao Dhanwada <
jaibheem...@gmail.com> wrote:
>
> I am trying to evaluate the JMX hints metrics for cassandra(TotalHints).
> However, when I am testing the metrics, the total hints accumulated count
> shows perfectly fine, but when the hints are replaye
On Fri, Feb 23, 2018 at 7:35 PM, Jeff Jirsa wrote:
> It comes up from time to time. Rob Coli spent years arguing that this
> behavior was confusing ( https://issues.apache.org/
> jira/browse/CASSANDRA-5836 ) , especially in the "I'm replacing a failed
> seed" sense. It also comes up when you're
Another Question on node density, in this scenario:
1. we should keep time series data of some years for a heavy write system in
Cassandra (> 10K Ops in seconds)
2. the system is insert only and inserted data would never be updated
3. in partition key, we used number of months since 1970, so
Thank you Alex,
I tried "TotalHintsInProgress" already, and I don't see it sending the
correct metrics. I used mean("TotalHintsInProgress") and I see 0 always on
grafana.
Do you know what is the correct way to do rate or diff for hints using
"TotalHints"?
I am currently using the below query
SELE
On Mon, Feb 26, 2018 at 10:02 AM, Jai Bheemsen Rao Dhanwada <
jaibheem...@gmail.com> wrote:
> Thank you Alex,
>
> I tried "TotalHintsInProgress" already, and I don't see it sending the
> correct metrics. I used mean("TotalHintsInProgress") and I see 0 always
> on grafana.
> Do you know what is the
Thanks Alex,
Let me try it.
On Monday, February 26, 2018, Oleksandr Shulgin <
oleksandr.shul...@zalando.de> wrote:
> On Mon, Feb 26, 2018 at 10:02 AM, Jai Bheemsen Rao Dhanwada <
> jaibheem...@gmail.com> wrote:
>
>> Thank you Alex,
>>
>> I tried "TotalHintsInProgress" already, and I don't see it
Hi,
Before looking for a sizing, have you try looking for application side
compression before inserting you data (this paper is really interresting
https://aaltodoc.aalto.fi/bitstream/handle/123456789/29099/master_Burman_
Michael_2017.pdf?sequence=1 ) ? For timeseries use case this is a major
stor
DIFFERENCE may not work here, if the Hints count is 10 for few hours, the
difference is always is zero. which is not the correct value.
On Mon, Feb 26, 2018 at 1:18 AM, Jai Bheemsen Rao Dhanwada <
jaibheem...@gmail.com> wrote:
> Thanks Alex,
>
> Let me try it.
>
>
> On Monday, February 26, 2018,
I find DIFFERENCE to be working for dropped mutation, which IMHO works the
same way as Hint metrics
*select difference(sum("Dropped_Count")) FROM "cassandraDroppedMessage"
groupby host* is valid when I check with nodetool over a period of time
Not sure what is not working on your side
On 26 Feb
This works when the count value is changing/increasing.
In my case if the Hints total value is 10 for 2 hours, the
difference(sum("TotalHints_Count")) is going to be 10 for that 10 seconds
time period and then it will be 0 later on. where as the value should be
constantly 10 until there is a chang
Hello C* Gurus,
I am quite new to cassandra so I am struggling over the concent of vnodes
and how to verify if those are properly enabled on my cluster.
I have the num_tokens in yaml set to 256 across all nodes and initial_token
is commented out of the config.
Apart from that I cannot find any o
Hello,
you can always run “nodetool ring” to see all tokens.
Hannu
> On 26 Feb 2018, at 12:32, Ivan Iliev wrote:
>
> Hello C* Gurus,
>
> I am quite new to cassandra so I am struggling over the concent of vnodes and
> how to verify if those are properly enabled on my cluster.
>
> I have the
On Sun, Feb 25, 2018 at 8:45 AM, Kenneth Brotman <
kenbrot...@yahoo.com.invalid> wrote:
> Chris Mattmann acted without authority and completely improperly as an
> Apache Software Foundation board member as a board member on their own has
> no authority. Their authority is to participate and vote
I got caught in the middle of this stuff. I feel for everyone. I said my two
cents. I had to vent. I’m back to concentrating on helping the group.
Kenneth Brotman
From: Eric Evans [mailto:john.eric.ev...@gmail.com]
Sent: Monday, February 26, 2018 9:16 AM
To: user@cassandra.apache.or
Hi,
I took a similar approach and it worked fine. I was able to build a tool
that parsed production query logs.
I used a helper method that would just grab a private field out of an
object by name using reflection.
Ariel
On Sun, Feb 25, 2018, at 11:58 PM, Jonathan Haddad wrote:
> I had to do some
wouldn't it make sense to expose the parser at some point?
On Mon, Feb 26, 2018 at 9:47 AM, Ariel Weisberg wrote:
> Hi,
>
> I took a similar approach and it worked fine. I was able to build a tool
> that parsed production query logs.
>
> I used a helper method that would just grab a private fiel
If this is needed functionality, shouldn’t that be available as a public method
or something? Maybe write a patch etc. ?
> Ariel Weisberg kirjoitti 26.2.2018 kello 18.47:
>
> Hi,
>
> I took a similar approach and it worked fine. I was able to build a tool that
> parsed production query logs.
Yes ideally. I’ve been spending a bit of time in the parser the last week.
There’s a lot of internals which are still using old terminology and are pretty
damn confusing. I’m doing a little investigation into exposing some of the
information while also modernizing it.
> On Feb 26, 2018, a
That ticket was before I was really active contributing, but I tend to
agree with your assessment: clearly there's pain point there, and we can do
better than the status quo.
The problem (as Jonathan notes) is that its a complicated subsystem, and
the "obvious" fix probably isn't as obvious as it
Is there any planning yet for a Cassandra Summit 2019 or Cassandra Summit
2018 (probably too late)?
Is there a planning committee?
Who wants there to be a Cassandra Summit 2019 and who thinks there is a
better way?
We could try a Cassandra Distributed Summit 2019 where we meet virtually
The home page of Cassandra is mobile friendly but the link to the third
parties from that web page is not. Any suggestions?
I made a JIRA for it: https://issues.apache.org/jira/browse/CASSANDRA-14263
Should posts about JIRA's be on this list or the dev list?
Kenneth Brotman
*Kenneth, *
How did you get "caught in the middle" of this "stuff"? You are the one
bringing it up? Also, your tone switched between calling Chris a "well
intended ASF" board member, to calling him an "idiot". He asked a perfectly
reasonable question, and then other questions followed as a result.
Eric,
My tone changed as I studied in more detail the thread. He begin with a
well-intended but ill-advised inquiry, very public inquiry at that which itself
was problematic. It’s not a board member’s place to push their weight around
like that. That’s board member training 101. Not his
JIRA 14265
Add explanation of vNodes to online documentation:
https://issues.apache.org/jira/browse/CASSANDRA-14265
A lot of inquiries on the mailing list about how vNodes work and how to set
configuration properly. We should add and explanation to the documentation.
Kenneth Brotman
Nice! Thanks for the help Oliver!
Kenneth Brotman
From: Oliver Ruebenacker [mailto:cur...@gmail.com]
Sent: Sunday, February 25, 2018 7:12 AM
To: user@cassandra.apache.org
Cc: d...@cassandra.apache.org
Subject: Re: Filling in the blank To Do sections on the Apache Cassandra web
site
Here are the related JIRA’s. Please add content even if It’s not well formed
compositionally. Myself or someone else will take it from there.
https://issues.apache.org/jira/browse/CASSANDRA-14274 The troubleshooting
section of the web site is empty
https://issues.apache.org/jira/browse/CA
I think some of the Instaclustr folks had done one last year which I really
wanted to go to.. Distributed / Async both would be easier to get people to
write papers, make slides, do youtube videos with.. and then we could do a
virtual web conf of the best submissions.
On Feb 26, 2018, 1:04 PM -
I'm new to Cassandra. Trying it out to see if it will work for my upcoming
project. I created a test keyspace and table on my dev laptop. Loaded it with
some data on a Friday and closed her down. Returned on Monday and looked up
the data and it was gone. The keyspace and table was there, bu
Hi A,
As I am able to understand your question :-
1) You inserted some data into your table and that was inserted
successfully.
2) Then you stop the cassandra servie.
3) After few days you started your service and you checked your Table and
there were no data.
Did you cross verified once you inser
Instaclustr sponsored the 2017 NGCC (Next Gen Cassandra Conference), which
was developer/development focused (vs user focused).
For 2018, we're looking at options for both a developer conference and a
user conference. There's a lot of logistics involved, and I think it's
fairly obvious that most o
blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px
#715FFA solid !important; padding-left:1ex !important; background-color:white
!important; } Hey there. Thanks for your response.
Yes. I absolutely inserted the data correctly and queried it many times
through cqlsh> as w
Cassandra data files are located at /var/lib/cassandra/data (
http://cassandra.apache.org/doc/latest/configuration/cassandra_config_file.html#data-file-directories
)
Can you double check that the Cassandra process has write access to this
directory? There should be a number of SSTable files in the
Please check your error.log file once. As you checked it means Your data is
not coming into Data file. I will suggest you to check your error.log file
once.
On Tue, Feb 27, 2018 at 2:37 PM, A wrote:
> Hey there. Thanks for your response.
>
> Yes. I absolutely inserted the data correctly and que
On Tue, Feb 27, 2018 at 7:37 AM, A wrote:
>
> I started going through the logs and haven't noticed anything yet... Very
> unexpected behavior.
>
Maybe I'm asking the obvious, but were your inserts *without* a TTL?
--
Alex
On Mon, Feb 26, 2018 at 7:05 PM, Jeff Jirsa wrote:
>
> I'll happily click the re-open button (you could have, too), but I'm not
> sure what the 'right' fix is. Feel free to move discussion to 5836.
>
Thanks, Jeff. Somehow, I don't see any control elements to change issue
status, even though I'
35 matches
Mail list logo
