+1 nb
On Tue, Jun 13, 2023 at 8:00 PM C. Scott Andreas
wrote:
> +1nb
>
> On Jun 13, 2023, at 10:25 AM, German Eichberger via dev <
> dev@cassandra.apache.org> wrote:
>
>
> + 1
>
> Great to see this moving forward!
> --
> *From:* Abe Ratnofsky
> *Sent:* Tuesday, Jun
Hello all
Sorry to disturb the discussion but there is an official announcement from
Microsoft about CosmosDB supporting Vector Search
https://devblogs.microsoft.com/cosmosdb/introducing-vector-search-in-azure-cosmos-db-for-mongodb-vcore/
Looks like Jonathan is spot on about this feature, it's q
Congratulations to Patrick ! After those years serving the community it is
very well deserved !
Le mer. 8 févr. 2023, 18:43, Mick Semb Wever a écrit :
>
> Long overdue with so much you have done for so many years. Congrats!
>
> On Thu, 2 Feb 2023 at 23:26, Molly Monroy wrote:
>
>> Congrats, Pat
+1 nb
On Fri, Feb 18, 2022 at 7:41 AM Berenguer Blasi
wrote:
> +1
> On 18/2/22 2:15, Jasonstack Zhao Yang wrote:
>
> +1
>
> On Fri, 18 Feb 2022 at 08:15, Jeremy Hanna
> wrote:
>
>> +1 nb. Thanks Caleb, Mike, Jason, and everyone involved with the effort.
>>
>> On Feb 17, 2022, at 4:23 PM, Caleb
Hello Claude
I have written a blog post about 2nd index architecture a long time ago but
most of the content should still be relevant, worth checking
https://www.doanduyhai.com/blog/?p=13191
Regards
Duy Hai DOAN
Le mer. 17 nov. 2021 à 10:17, Claude Warren
a écrit :
> Greetings,
>
> I am look
's (at least thus far
> >>>>>>>>
> >>>>>>>> sans k8s
> >>>>>>>>
> >>>>>>>> operator)
> >>>>>>>>
> >>>>>>>> tend to start with a st
Congrats !!!
3 years worth of waiting and finally released !!!
On Tue, Jul 27, 2021 at 12:02 AM Ben Slater
wrote:
> Congratulations and thank you to everyone involved in getting 4.0 released!
> It has been a very impressive community effort.
>
> ---
>
>
> *Ben Slater**Chief Product Officer*
>
Last but not least
4) Are collections, static columns, composite partition key composent and
UDT indexings (at any depth) on the roadmap of SAI ? I strongly believe
that those features are the bare minimum to make SAI an interesting
replacement for the native 2nd index as well as SASI. SASI limite
Thank you Zhao Yang for starting this topic
After reading the short design doc, I have a few questions
1) SASI was pretty inefficient indexing wide partitions because the index
structure only retains the partition token, not the clustering colums. As
per design doc SAI has row id mapping to parti
Definitely +1
Coding in Java every day, I can't write test without assertJ. Once you get
to know assertJ, it's impossible to go back to basic assertions of JUnit
that feels really boilerplate
On Tue, Mar 10, 2020 at 8:53 PM Jordan West wrote:
> If it encourages more and higher quality test w
+1 too (non binding)
On Fri, Oct 4, 2019 at 10:33 PM Scott Andreas wrote:
>
> +1nb for me for the 3.x releases.
>
> The user-facing issues resolved in 2.2 are slimmer and relatively minor (just
> 15225, 15050, 15045, 15041), but if it makes sense to release all three
> together, sounds good to
So sad, at least let's hope that the slides will be available online so
people who can't attend will catch up
Thanks
On Sun, Jun 9, 2019 at 10:27 PM Nate McCall wrote:
> The topics look really interesting. Do you know if it will be recorded for
> > people to catch up later?
> >
> > Regards
> >
The topics look really interesting. Do you know if it will be recorded for
people to catch up later?
Regards
On Sat, Jun 8, 2019 at 1:15 AM Nate McCall wrote:
> Also, quick note that if you got an acceptance email from the ASF, but dont
> see your track on the schedule yet, it's probably slotte
Hello devs
After CASSANDRA-7423 (Cassandra 3.6), it is possible to declare un-frozen
UDT at 1st level and more important/interesting, it is possible to update
atomically individual fields on an UDT (without the need to rewrite the UDT
entirely)
This JIRA opens tremendous new opportunity in term o
I have an application with a purpose to store a dynamic number of colones
on each rows (thing that i cannot do with classical relational database),
---> Postgresql allows you tu use array type or map type with dynamic
number of records, provided of course that the cardinality of the
collection is
> I'd like to see pluggable storage and transient replica tickets land, for
> starters.
So after all the fuss and scandal about incremental repair and MV not
stable and being downgraded to experimental, I would like to suggest that
those new features are also flagged as experimental for some time
My wish list:
* Add support for arithmetic operators (CASSANDRA-11935)
* Allow IN restrictions on column families with collections
(CASSANDRA-12654)
* Add support for + and - operations on dates (CASSANDRA-11936)
* Add the currentTimestamp, currentDate, currentTime and currentTimeUUID
functions (C
+10
There are 2 hard problems in CS: naming things and cache invalidation
Le 20 mars 2018 23:04, "Jon Haddad" a écrit :
> Whenever I hop around in the codebase, one thing that always manages to
> slow me down is needing to understand the context of the variable names
> that I’m looking at. We’
So before buying any marketing claims from Microsoft or whoever, maybe
should you try to use it extensively ?
And talking about backup, have a look at DynamoDB:
http://i68.tinypic.com/n1b6yr.jpg
>From my POV, if a multi-billions company like Amazon doesn't get it right
or can't make it easy for e
Thanks Jeff for the very comprehensive list of actions taken this year.
Can't wait to put my hands on 4.0 once it's released
On Fri, Dec 22, 2017 at 10:20 PM, Jeff Jirsa wrote:
> Happy holidays all,
>
> I imagine most people are about to disappear to celebrate holidays, so I
> wanted to try to
+1 to report range tombstones. This one is quite tricky indeed to track
+1 to Mockito too, with the reserve that it should be used wisely
On Thu, Dec 21, 2017 at 9:11 PM, Jon Haddad wrote:
> I had suggested to Alex we kick this discussion over to the ML because the
> change will have a signific
Excellent docs, thanks for the update Dikang.
A question about a design choice, is there any technical reason to specify
the storage engine at keyspace level rather than table level ?
It's not overly complicated to move all tables sharing the same storage
engine into the same keyspace but then it
y “feature X is ready”
> when it’s not. That’s a great way to get a reputation as “unstable” or
> “not fit for production."
>
> Jon
>
>
> > On Oct 2, 2017, at 11:54 AM, DuyHai Doan wrote:
> >
> > "I would (in a patch release) disable MV CREATE
"I would (in a patch release) disable MV CREATE statements, and emit
warnings for ALTER statements and on schema load if they’re not explicitly
enabled"
--> I find this pretty extreme. Now we have an existing feature sitting
there in the base code but forbidden from version xxx onward.
Since when
ink committing 8099, or at
> the very least, parts of it, behind an experimental flag would have been
> the right thing to do. It was a huge change that we're still finding issues
> with 2 years later.
>
> On October 1, 2017 at 6:08:50 AM, DuyHai Doan (doanduy...@gmail.com)
>
How should we transition one feature from the "experimental" state to
"production ready" state ? On which criteria ?
On Sun, Oct 1, 2017 at 12:12 PM, Marcus Eriksson wrote:
> I was just thinking that we should try really hard to avoid adding
> experimental features - they are experimental due
Yes the recommendation still applies
Wide partitions have huge impact on repair (over streaming), compaction and
bootstrap
Le 10 mai 2017 23:54, "Kant Kodali" a écrit :
Hi All,
Cassandra community had always been recommending 100MB per partition as a
sweet spot however does this limitation sti
"I have no clue what it would take to accomplish a pluggable storage
engine, but I love this idea."
This was a long and old debate we had several times in the past. One of the
difficulty of pluggable storage engine is that we need to manage the
differences between the LSMT of native C* and RockDB
"Otherwise it'll be difficult to write unit test cases."
Having to pull in dependency injection framework to make unit testing
easier is generally a sign of code design issue.
With constructor injection & other techniques, there is more than enough to
unit test your code without having to pull ex
Static columns can already be indexed by custom 2nd index impl, for example
SASI : https://issues.apache.org/jira/browse/CASSANDRA-11183
On Sun, Mar 12, 2017 at 10:40 PM, Jeff Jirsa wrote:
> Hi folks,
>
> Cassandra JIRA is huge, active, and ever-changing. It's easy to miss
> tickets you may car
After looking at the patch, my thoughts (beware, it's getting very
technical):
Original code:
-t = new ListType(elements, isMultiCell);
-ListType t2 = internMap.putIfAbsent(elements, t);
-t = (t2 == null) ? t : t2;
Optimized code:
+t = internMap
just change the partitioner. That's all
> >
> > Am 05.03.2017 09:15 schrieb "DuyHai Doan" :
> >
> >> "How can that be achieved? I haven't done "scientific researches" yet
> but
> >> I
> >> guess a "MV partitioner&qu
"How can that be achieved? I haven't done "scientific researches" yet but I
guess a "MV partitioner" could do the trick. Instead of applying the
regular partitioner, an MV partitioner would calculate the PK of the base
table (which is always possible) and then apply the regular partitioner."
The m
See my blog post to understand how MV is implemented:
http://www.doanduyhai.com/blog/?p=1930
On Fri, Feb 10, 2017 at 7:48 PM, Benjamin Roth
wrote:
> Same partition key:
>
> PRIMARY KEY ((a, b), c, d) and
> PRIMARY KEY ((a, b), d, c)
>
> PRIMARY KEY ((a), b, c) and
> PRIMARY KEY ((a), c, b)
>
> D
The link you posted doesn't say anything about Cassandra
Le 7 févr. 2017 11:41, "Kant Kodali" a écrit :
> Why does CockroachDB github website say Cassandra has no Availability on
> datacenter failure?
>
> https://github.com/cockroachdb/cockroach
>
Be very careful, there is a serious bug about AND/OR semantics, not solved
yet and not going to be solved any soon:
https://issues.apache.org/jira/browse/CASSANDRA-12674
On Thu, Nov 17, 2016 at 7:32 PM, Jeff Jirsa
wrote:
>
> We’ll be voting in the very near future on timing of major releases and
16 at 11:52 AM, Kant Kodali wrote:
> But then don't I need to evict for every batch of writes? I thought cache
> would make sense when reads/writes > 1 per say. What do you think?
>
> On Sat, Nov 5, 2016 at 3:33 AM, DuyHai Doan wrote:
>
>> "I have a requi
"I have a requirement where I need to know last value that is written
successfully so I could read that value and do some computation and include
it in the subsequent write"
Maybe keeping the last written value in a distributed cache is cheaper than
doing a read before write in Cassandra ?
On Sat
> cluster atleast for exact matches. I understand if it is a substring search
> then there will 2^n substrings which equates to 2^n hashes/tokens which can
> be a lot!
>
> On Sat, Oct 15, 2016 at 4:35 AM, DuyHai Doan wrote:
>
> > If each indexed value has very few matching
one matching row in my case.
>
>
>
> On Sat, Oct 15, 2016 at 2:40 AM, DuyHai Doan wrote:
>
> > Define precisely what you mean by "high cardinality columns". Do you
> mean:
> >
> > 1) a single indexed value is present in a lot of rows
> > 2) a si
Define precisely what you mean by "high cardinality columns". Do you mean:
1) a single indexed value is present in a lot of rows
2) a single indexed value has only a few (if not just one) matching row
On Sat, Oct 15, 2016 at 8:37 AM, Kant Kodali wrote:
> I understand Secondary Indexes in gener
You need to use the CommitLogReader, there is no way to access CDC data
using CQL. I'm not even sure it will be possible one day
On Fri, Oct 7, 2016 at 11:19 PM, sridhar nemani
wrote:
> Hi,
>
>
>
> I am fairly new to Cassandra. I have a requirement to be able to read any
> changes to tables, as
Java driver 3.1.0 for support of the latest features of Cassandra 3.x
(PER PARTITION LIMIT, JSON support ...)
Java driver 3.0.4 is also compatible with Cassandra 3.x but has less
support for bleeding edge features
On Sat, Oct 1, 2016 at 4:29 PM, Jonathan Ekwempu
wrote:
> Is there a Java drive
I found that SO question very interesting to fuel the discussion about
assert vs exception :
http://stackoverflow.com/questions/1957645/when-to-use-an-assertion-and-when-to-use-an-exception
On Wed, Sep 21, 2016 at 8:20 PM, Michael Kjellman <
mkjell...@internalcircle.com> wrote:
> Yeah, I understa
Just a question before moving forward, do we want to trigger CI build for
each proposed pull request on Github ? And if yes, on which infra ?
I'm asking because opening PR to the crowd is a good thing but we may have
tons of PRs coming and the infra may be heavily loaded.
Apache Zeppelin project
You can read this blog post, there are a handful of interesting links:
http://the-paper-trail.org/blog/distributed-systems-theory-for-the-distributed-systems-engineer/
On Wed, Aug 24, 2016 at 1:45 PM, Salih Gedik wrote:
> Hi everyone,
> I am an undergrad student and working on a simple distribut
It is not (yet) possible to use functions in LWT predicates. LWT only
supports = and != plus IF (NOT) EXISTS right now
Le 11 mai 2016 16:50, "Bhuvan Rawal" a écrit :
> Hi,
>
> I was working on maintaining counters in cassandra, I read that it is not
> 100% accurate, I have tested them to be extre
The next major release of Datastax Enterprise 5.0 will include C* 3.x. It
is expected to be released somewhere around June/July, no exact date has
been announced yet.
Le 10 mai 2016 09:08, "Joly, Josselin" a écrit :
> Hello,
>
> I am wondering if the version of Cassandra 3.0 is already included i
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