Thank you Paulo for your detailed answer!
I was not monitoring NEWS.txt in the Git repo so far but that file
definitely has info I was looking for.
cheers
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
09.10.2021
or similar questions? As a user I see the changelog and
that's cool but that is not providing obvious answers (of course). So I
mean some sort of migration hints/guide.
thanks!
--
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
Yes this defintely explains the (much) longer startup - however I'm not
sure about stability issues still... Anyways thanks Erik for the info!
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
10.03.2021 14:26 keltez
around
60-80% of completed test cases
Anyone similar / related experiences maybe?
thanks
--
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
> Requires serial writes and serial reads, so a bit more expensive, but
> allows TTL.
>
>
> On Mar 6, 2021, at 8:03 AM, Attila Wind wrote:
>
>
>
> Hi guys,
>
> We do use Counter tables a lot because in our app we have several things
> to count (business logic)
>
if I have a race condition so ThreadA and ThreadB
are executing the above sequence ~ the same time then the mycounter
value will be wrong...
I started to wonder: how do you solve this problem?
Is anyone aware of any nice post/article regarding migration strategy -
stepping away from counters?
se... :-)
Thanks again - and thanks to others as well
It looks mastering the "nodetool tpstats" and the Cassandra thread pools
would worth some time... :-)
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
06.03.2021
0 0.00 0.00
0.00 0.00
ASYMMETRIC_SYNC_REQ 0 0.00 0.00
0.00 0.00
REPLICATION_DONE_REQ 0 0.00 0.00
0.00 0.00
PAXOS_PROPOSE_RSP 0
back to fully utilize the server resources...
We are clearly missing something!
Anyone any idea / tip?
thanks!
--
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
Thanks Elliott, yepp! This is exactly what we also figured out as a next
step. Upgrade our TEST env to that so we can re-evaluate the test we did.
Makes 100% sense
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
27.01.2021
o in our cluster I'm
all ears! :-)
thanks
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
22.01.2021 07:35 keltezéssel, Attila Wind írta:
Hey guys,
Yesterday we had an outage after we have lost a node and we saw such a
implemented in Java 8, we are using
Datastax driver 3.7.1 and server cluster is running on Cassandra 4.0
alpha 4. Cluster size is 3 nodes.
Any feedback is appreciated! :-)
thanks
--
Attila Wind
http://www.linkedin.com/in/attilaw <http://www.linkedin.com/in/attilaw>
Mobile: +49 176 43556932
ategies in your tables to keep the amount of data managed
somehow. TTL based approach e.g. is the best if you ask me especially if
you have huge data set.
cheers
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +49 176 43556932
27.10.2020 20:07 keltezéssel, Deepak Sharma írta:
Hi Attlil
blog post(s), article(s), book(s). Not some
"half done" or "I quickly write a post because it was too long ago when
I blogged something..." things :-)
Good pointers would be appreciated!
thanks
--
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +49 176 43556932
ny thoughts, comments, pointers to some related case studies, articles,
etc is highly appreciated!! :-)
thanks!
--
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +49 176 43556932
start happening is a clean indication)
cheers
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +49 176 43556932
14.09.2020 18:36 keltezéssel, Aaron Ploetz írta:
Deepak,
Can you reply with:
1) The query you are trying to run.
2) The table definition (PRIMARY KEY, specifically).
3) Maybe
setup for everything which I believe should be fine tuned a bit
better
FYI: this table has ~500k new UUID keyed rows every day in each partition...
thanks a lot!
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +49 176 43556932
04.09.2020 16:33 keltezéssel, Jeff Jirsa írta:
As
a) issue delete one-by-one like
DELETE FROM ... WHERE ... uuid = 'a'
DELETE FROM ... WHERE ... uuid = 'b'
...
DELETE FROM ... WHERE ... uuid = 'z'
or
b) issue delete in a group fashion like
DELETE FROM ... WHERE ... uuid in ('a', 'b', ...
right! silly me (regarding "can't have null for clustering column") :-)
OK code is modified, we stopped using NULL on that column. In a few days
we will see if this was the cause.
Thanks for the useful info eveyrone! Helped a lot!
Attila Wind
http://www.linkedin.com/in/atti
l columns? or just clustering key cols?
Because if for all cols (which would make sense maybe to me more) then
we found the possible reason.. :-)
As we do have an Integer coulmn there which is actually NULL often (and
so far in all cases)
Attila Wind
http://www.linkedin.com/in/attilaw
Mobil
r these counter tables however we are handling them
same fashion... ok counter tables work differently but still
interesting to me why those never generated things like this
thanks!
--
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +49 176 43556932
"consistency
level" / different phases of LWT very well.
Yesterday I was searching / reading at least 15 different articles +
docs - none of them answered my questions (and I just had more and more
as progressing with reading) entirely - this one is a nice one!
cheers
Attila
Ah yeah forgot to mention - I am using Cassandra 4.0-alpha4
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +49 176 43556932
26.06.2020 08:06 keltezéssel, Attila Wind írta:
Hey guys,
Recently I ran into an interesting situation (by trying to add
optimistic locking strategy to one
with ReplicationFactor =
2 with tolerating 1 node is down (out of that 2 replicas)"
?
Thanks!
--
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +49 176 43556932
Hi Sergio,
AFAIK you use batches when you want to get "all or nothing" approach from
Cassandra. So turning multiple statements into one atomic operation.
One very typical use case for this is when you have denormalized data in
multiple tables (optimized for different queries) but you need to modi
Hi Garvit,
I can not answer your main question but when I read your lines one thing
was popping up constantly: "why do you ask this?"
So what is the background of this question? Do you see anything smelly?
Actually
a) I always assumed so naturally there are of course lots of in-parallel
activiti
data fully mirrored into a test cluster. So running
those queries on test system is possible.
Plus If for whatever reason we really really need to run such a query in
Prod I can simply instruct them test query like this in the test system
for sure
cheers
Attila Wind
http://www.linkedin.com/in
...
thanks!
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +36 31 7811355
On 2019. 05. 23. 11:42, shalom sagges wrote:
a) Interesting... But only in case you do not provide partitioning key
right? (so IN() is for partitioning key?)
I think you should ask yourself a different question
What do I miss?
ps.: maybe Orange and sky-uk/cassandra-operator guys should
cooperate..?? Others are clearly building business around it
cheers
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +36 31 7811355
On 2019. 05. 24. 20:36, John Sanda wrote:
There is also
https://github.com/s
When using ALLOW
FILTERING, you are doing something like a full table scan in a
relational database.
There is a lot of information on the internet regarding this subject
such as
https://www.instaclustr.com/apache-cassandra-scalability-allow-filtering-partition-keys/
Hope this helps.
Regards,
b) Still does not explain or justify "all 8 nodes to halt and
unresponsiveness to external requests" behavior... Even if servers are
busy with the request seriously becoming non-responsive...?
cheers
Attila Wind
http://www.linkedin.com/in/attilaw
Mobile: +36 31 7811355
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