will be archived and may
> be scanned by us and/or by external service providers to detect and prevent
> threats to our systems, investigate illegal or inappropriate behavior,
> and/or eliminate unsolicited promotional e-mails (“spam”). If you have any
> concerns about this process, plea
, D. Salvatore wrote:
>>
>>> Hello!
>>> There is any way to know how many queries a node is currently serving
>>> through JMX(or other tools)? And the state of the request so, for example,
>>> if the request is waiting for data from another node?
>&g
job weekly??)
>
>
>
> Some estimates on the number of deletes performed would be…upto 80-90K
> rows purged in 3 months vs 10K deletes every week ??
>
>
>
> Thanks,
>
> Charu
>
>
>
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
acob Shadix :
>
> Are you using vnodes? I typically do one-by-one as the decommission will
> create additional load/network activity streaming data to the other nodes
> as the token ranges are reassigned.
>
> -- Jacob Shadix
>
> On Sat, Apr 8, 2017 at 10:55 AM, Vlad wrote:
&
Hi,
We've had a discussion internally to start to run `nodetool verify`
periodically to test for bitrot. Does anyone know how I could check if the
verification failed or succeeded from, say, a script? Is there an error
exit code or some output I could grep for?
Thanks,
Jens
--
Jens R
g the (corrupt)
current state in the live cluster".
Cheers,
Jens
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Email: jens.ran...@tink.se
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re is an option: https://github.com/anubhavkale/CassandraTools/
> tree/master/BackupRestore
>
>
>
>
>
> *From:* Jens Rantil [mailto:jens.ran...@tink.se]
> *Sent:* Wednesday, November 2, 2016 2:21 PM
> *To:* Cassandra Group
> *Subject:* Backup restore with a different name
&g
loper to looks at the
old copy?
Cheers,
Jens
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Phone: +46 708 84 18 32
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mprove noticeably. I have attached a trace of
> one query i ran which took around 3 seconds which i would expect to take
> well below a second. I have also included the cassandra.yaml file and jvm
> options file. We do intend to change the storage to local storage and
&
Software Engineer | Instaclustr
>>>
>>>
>>>
>>>
>>> This email has been sent on behalf of Instaclustr Pty Ltd (Australia)
>>> and Instaclustr Inc (USA).
>>>
>>> This email and any attachments may contain confidential and
guess it helps because when you add more nodes to
> your cluster, the data can be redistributed since you have more nodes.
>
> What else are things to consider?
>
> Thanks.
>
--
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Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web:
number of clustering keys per partition key could
have an impact. Might be worth investigating.
Cheers,
Jens
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
believe repair
> performs following operations -
>
> 1) Major compaction
> 2) Exchange of merkle trees with neighbouring nodes.
>
> Is there any other operation performed during manual repair? What if I
> kill the process in the middle?
>
> Thanks.
> Lokesh
>
--
Jens R
rmation about the liveness of a
> node spreads. For example, in an n-node cluster the median amount of time
> it takes for all nodes to learn that a node went down is f(n) seconds. Is a
> minute a reasonable upper bound for most clusters? Too high, too low?
>
>
> Thanks,
>
ap column"
>>>>>>>>
>>>>>>>> --> how do you manage the different types then ? Because maps in
>>>>>>>> Cassandra are strongly typed
>>>>>>>>
>>>>>>>> Unless you set the type of map
ommission and restarting decommission will
> > cause any issues to cluster?
> >
> > Using c*-2.0.17 , 2 Data centers, each DC with 3 groups each , each group
> > with 3 nodes with RF-3
> >
> > --
> > Thanks...!
>
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
Good job guys.
>>
>> --
>> Ashish Disawal
>>
>> On Mon, Sep 12, 2016 at 3:00 AM, Jens Rantil wrote:
>>
>>> Nice! The website also feels snappier!
>>>
>>>
>>> On Friday, July 29, 2016, Sylvain Lebresne wrote:
>>>
Jens
On Monday, September 12, 2016, David Aronchick wrote:
> Please let me know if I can help at all!
>
> On Sun, Sep 11, 2016 at 2:55 PM, Jens Rantil > wrote:
>
>> Hi Aiman,
>>
>> I noticed you never got any reply. This might be of interest:
>> http://bl
> >
> > 3. Scaling up and increasing the RF of a particular keyspace, would
> there be a clean way to do this with the kubernetes tooling?
> >
> > In the end I'm wondering how much of the Kubernetes + Cassandra involves
> nodetool, and how much is just a
ion. How safe is this method? Do we need to disable
> thrift/gossip protocol before performing this function, and enable them
> back after resync completes?
>
>
>
> Thanks in advance!
>
>
>
> Sincerely,
>
>
>
> Michael Fong
>
--
Jens Rantil
ore than welcome.
>
> Best,
> On behalf of the Apache Cassandra developers.
>
--
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Backend engineer
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Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
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Sun, Sep 11, 2016, 17:10 Jens Rantil > wrote:
>
>> Hi Bhuvan,
>>
>> I have done such expansion multiple times and can really recommend
>> bootstrapping a new DC and pointing your clients to it. The process is so
>> much faster and the documentation you r
>>>
> >>> Space used (live): 301894591442
> >>>
> >>> Space used (total): 301894591442
> >>>
> >>>
> >>>
> >>> Problematic node
> >>>
> >>> Keyspace: mykeyspace
> &g
ml>
> and
> bootstrap multiple nodes simultaneously by keeping auto_bootstrap false in
> cassandra.yaml and rebuilding nodes simultaneously in the new dc?
>
>
> Thanks & Regards,
> Bhuvan
>
--
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +4
istency in this case (When LWT is being used in
> batches).
>
> 3. Is it possible to use multiple LWT in a single Batch? In general how
> does LWT performs with Batch and is Paxos acted on before batch execution?
>
> Can someone help us with this?
>
> Thanks & Regards,
and for
> any data refresh only a very small fraction (<.1%) will actually need
> deleting. 99% of the time I'll just be overwriting existing keys.
>
> I'd be grateful if anyone could shed some advice on the best solution here
> or whether there's some better way I hav
y small fraction (<.1%) will actually need
> deleting. 99% of the time I'll just be overwriting existing keys.
>
> I'd be grateful if anyone could shed some advice on the best solution here
> or whether there's some better way I haven't thought of.
>
> Thanks,
>
> Chris
>
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
etwork appears to be fine between nodes, with iperf tests showing
>> that we have a lot of headroom.
>>
>> Any thoughts on what to look for? Can we increase thread count/pool sizes
>> for the messaging service?
>>
>> Thanks,
>>
>> Mike
>>
>> --
>>
>> Mike Heffner
>> Librato, Inc.
>>
>>
>
>
> --
>
> Mike Heffner
> Librato, Inc.
>
> --
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
but this cql can’t execute. have some advise？？？
>
> update table_name set field=my_function(field) where …
>
>
> tnk u so much
>
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
enters the primary DC else the application URL be directed to
> another DC.
>
>
>
> What is the best option to achieve this??
>
>
>
> Thanks,
>
> Charu
>
>
>
>
>
>
>
>
>
> --
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
jean paul :
>
>> Hi all,
>>
>> Please, What is the motivation for choosing a DHT ring in cassandra? Why
>> not use a normal parallel or distributed file system that supports
>> replication?
>>
>> Thank you so much for clarification.
>>
>> Kind
ir behaviour? Which
> settings should I look at if I want CPU to stay below 50% for instance. My
> worry is always to impact the read/write performance during times when we
> do anti-entropy repairs.
>
> Cheers,
> Reik
>
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Walling
he data into the new DC and susbsequently alter the
>> keyspace to replicate from the older DC.
>>
>> Cheers
>> Jan
>>
>>
>>
>> On Thu, 4/21/16, Jens Rantil wrote:
>>
>> Subject: Re: Alternat
r haul in the way hints have been implemented.
>>
>> Recommend reading up this blog article:
>>
>> http://www.datastax.com/dev/blog/whats-coming-to-cassandra-in-3-0-improved-hint-storage-and-delivery
>>
>> hope this helps
>> Jan/
>>
>>
>>
assandra/2.1/cassandra/operations/ops_add_dc_to_cluster_t.html
>
> Is that the appropriate guide for this and I'm just over thinking it? Or
> is there something else I should be looking at?
>
> Also, this is DSC C* 2.1.13.
>
> TIA!
>
> -AA
>
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
T token(key), key FROM tbl WHERE
> token(key) >= #{token} LIMIT 1")
> end
> last_token = token
> end
>
> puts keys.keys.count
>
> What am I missing?
>
> Thanks!
>
> Carlos Alonso | Software Engineer | @calonso <https://twitter.com/calonso>
>
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
gc_grace_seconds after when the backup is taken.
As of me, I managed to a get a more stable VPN setup and did not have to go
down this path.
Cheers,
Jens
On Mon, Apr 18, 2016 at 10:15 AM Jens Rantil wrote:
> Hi,
>
> I am provisioning a new datacenter for an existing cluster. A rather sh
itten?
>
> Regarding your other post: Yes, 3.0.3 is pretty new. But we are new to
> this cassandra game, and our schema-fu is not strong enough for us to
> create a schema without using materialized views :)
>
>
> ons. 20. apr. 2016 kl. 17.09 skrev Jens Rantil :
>
>>
ow which knobs to turn to accomplish this? or if it is even
> possible :)
>
> We are running cassandra 3.0.3, with 8Gb heap and a replication factor of
> 3.
>
> Thank you in advance!
>
> Yours sincerely,
> Bo Madsen
>
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matters you can reach me at +46-708-84 18 32.
cluster to wait for the write to be
> persisted on the relevant nodes before returning an ok to the client. But I
> don't know which knobs to turn to accomplish this? or if it is even
> possible :)
>
> We are running cassandra 3.0.3, with 8Gb heap and a replication factor of
> 3.
>
onds after operation 3) above, use sstableloader
to stream my backup to the new nodes.
5. For safety precaution, do a full repair.
Could you see any issues with doing this?
Cheers,
Jens
--
Jens Rantil
Backend Developer @ Tink
Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden
For urgent matte
reads, then will both clients see the value 'bar' for
> prop1? Are there situations in which clients might see different values?
>
>
> --
>
> - John
>
--
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tin
y for me
to extract debugging information to file a bug report before restarting the
nodes?
Cheers,
Jens
--
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Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook <https://www.facebook.com/#!/tink.se> Linkedin
<http://www.linked
Hi,
For the record I've succesfully used
https://github.com/BrianGallew/cassandra_range_repair to make smooth repairing.
Could maybe also be of interest don't know...
Cheers,
Jens
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On Fri, Jun 19, 2015 at 8:36 PM, null wrote:
> It seems to me that running repa
Fri, Jun 12, 2015 at 5:21 AM, Jens Rantil wrote:
>> Let's say I have an existing cluster and do the following:
>>
>>1. I start a new joining node (A). It enters state "Up/Joining".
>>Streaming automatically start to this node.
>>2. I wait tw
n | Twitter: cjrolo | Linkedin: *linkedin.com/in/carlosjuzarterolo
> <http://linkedin.com/in/carlosjuzarterolo>*
> Mobile: +31 6 159 61 814 | Tel: +1 613 565 8696 x1649
> www.pythian.com
>
> On Fri, Jun 12, 2015 at 11:58 AM, Jens Rantil wrote:
>
>> Hi,
>>
>> I have o
what
it is responsible of?
This is of importance for planning when one it expanding a cluster to
multiple smaller nodes.
Thanks,
Jens
--
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook <https://www.facebook.com/#!/tink.se> Li
was a
mistake) and then X.X.X.51. I haven't executed `nodetool cleanup` on any
nodes yet.
For the curious, the full ring can be found here:
https://gist.github.com/JensRantil/57ee515e647e2f154779
Cheers,
Jens
--
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Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708
; doesn't rollback?.
Yes.
/Jens
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Tink AB
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Phone: +46 708 84 18 32
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t Cassandra has, is easy in HBase, but making it as
> consistent as the rest of HBase is hard)
>
> Thanks
> Ajay
>
>
>>
>> On May 29, 2015, at 12:09 PM, Ajay wrote:
>>
>> Hi,
>>
>> I need some info on Hbase vs Cassandra as a data store (in general plus
he GossipingPropertyFileSnitch
> decides where to put secondary/tertiary replicas (ie. always "next physical
> node" in ring)? Do I need to execute `nodetool cleanup` also on newly
> commissioned nodes?
>
> Thanks,
> Jens
>
> --
> Jens Rantil
> Backend engineer
&
Could anyone explain to me my new node is receiving more data than
expected? Does this have to do with the way the GossipingPropertyFileSnitch
decides where to put secondary/tertiary replicas (ie. always "next physical
node" in ring)? Do I need to execute `nodetool cleanup` also on newl
Ah, that explains things. Thanks!
On Fri, Jun 5, 2015 at 10:59 PM, Robert Coli wrote:
> On Fri, Jun 5, 2015 at 5:15 AM, Jens Rantil wrote:
>
>> Datastax's documentation on "Decommissioning a data center
>> <http://docs.datastax.com/en/cas
On Fri, Jun 5, 2015 at 5:45 PM, Jens Rantil wrote:
>
>> Hi,
>>
>> I asked this on IRC earlier today, but didn't get any response;
>>
>> Datastax's documentation on "Decommissioning a data center
>> <http://docs.datastax.com/en/cassandra/2.0/cas
ommission each node. Isn't
decommissioning going to hand over all data anyway? Then why is the repair
necessary?
Cheers,
Jens
--
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Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook <https://www.facebook.com/#!/tink.se> Linkedin
<
the clients can be allowed to work (i.e. move schema
> creation out of the clients)?
>
>
>
>
> Thanks
> /Magnus
>
>
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Backend engineer
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Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook <https://www.facebook.com
t; SELECT f3 FROM t1 WHERE f1=k2 AND f2=k2;
>
> It looks like all the previous values are preserved until compaction, but
> does executing the SELECT reads all the values (O(n), n - number of
> updates) or only the current one (O(1)) ?
>
>
> How the situation looks for Cou
I found couple of open source efforts but nothing is available currently.
>
> Thanks
> Ajay
>
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Backend engineer
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Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
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Facebook <https://www.facebook.com/#!/tink.se> Linkedin
<http://
>
> Maybe someone can point me to an existing jira-ticket, but I also
> appreciate any other feedback :-)
>
> regards,
> Christian
>
>
--
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Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook <https://www.f
inoise','Bye Bye
>> > Blackbird','Joséphine Baker');");
>> >
>> >
>> >
>> > But for more complicated code this will quickly become unmanageable,
>> > and doesn’t lend itself well to dynamically creating row data base
cement thats enough.Please guide me. Thanks
> in advance.
>
> Thanks and Regards,
> Divya
>
>>
>>>
--
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
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Facebook <https://www.facebook.com/#!/tin
the thread which is taking all the memory. I've seen this
happen multiple times. If this happened to you, a critical Cassandra thread
could have died and brought the whole Cassandra DB with itself.
Just an idea - cheers,
Jens
--
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.
mean bytes: 986530969
> Average live cells per slice (last five minutes):
> 501.66101694915255
> Maximum live cells per slice (last five minutes): 502.0
> Average tombstones per slice (last five minutes): 0.0
> Maximum tombstones per slice (last five mi
Jean,
I'm not sure you will receive any reply unless you ask specific questions about
those links.
Cheers,
Jens
–
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On Fri, Mar 20, 2015 at 5:08 PM, Sibbald, Charles
wrote:
> Sounds like this is a job for jackrabbit ?
> http://jackrabbit.apache.org
> From: Ali Akhtar mai
Hi,
Try setting fetchsize before querying. Assuming you don't set it too high, and
you don't have too many tombstones, that should do it.
Cheers,
Jens
–
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On Wed, Mar 18, 2015 at 2:58 AM, Mehak Mehta
wrote:
> Hi,
> I have requirement to fetch million row as result of my
Hi,
Check your Cassandra and kernel (if on Linux) log files for errors.
Cheers,
Jens
–
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On Wed, Mar 4, 2015 at 2:18 AM, 曹志富 wrote:
> Some times My C* 2.1.3 cluster compaction or streaming occur this error ,do
> this because of disk or filesystem problem??
> Thanks All.
>
Frens,
What consistency are you querying with? Could be you are simply receiving
result from different nodes each time.
Jens
–
Skickat från Mailbox
On Wed, Mar 4, 2015 at 7:08 PM, Mikhail Strebkov
wrote:
> We have observed the same issue in our production Cassandra cluster (5 nodes
> in o
the second table schema described
> above, but switch to an order-preserving hashing function, and then
> manually hash the "id" field. This is essentially what we would do in
> HBase.
>
Like you might already know, this order preserving hashing is _not_
considered best prac
ta so i need to add OR clause in my
> WHERE clause.
> ex: select * from table where id =123 OR name ='abc'
> so in above i want that i get data if my id is 123 or my name is abc .
>
> is there any possibility in cassandra to achieve this .
>
>
--
Jens Rantil
Backend en
();
>>
>> String user_id = r.getString("user_id");
>> userList.add(user_id);
>> }
>> } catch (Exception e) {
>> System.out.println("error= " + e);
>&g
ze(the number of
> rows)?
> When one partition's data is extreme large, the write/read will slow?
> Can anyone show me some exist usecases.
> thanks!
>
>
>
>
>
>
--
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web:
very poor
>> datawarehouse ot long term time series store) and then use services to
>> process queries that merge data from hadoop and cassandra.
>>
>> Also, spark on hdfs gives more flexibility in terms of large datasets
>> and performance. The very nature
if you are in a version without the fix for CASSANDRA-2434, in theory
> adding multiple nodes "at once" might contribute to their bootstraps
> hanging.
>
> Stop cassandra on the joining nodes, wipe/move aside their data
> directories, and try again one at a time.
>
&g
On Wed, Feb 11, 2015 at 11:40 AM, Marcelo Valle (BLOOMBERG/ LONDON) <
mvallemil...@bloomberg.net> wrote:
> If you use Cassandra enterprise, you can use hive, AFAIK.
Even better, you can use Spark/Shark with DSE.
Cheers,
Jens
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Backend engineer
Tink AB
Email:
* from t where a = 1 and b = 2 limit 10;
>> select * from t where a = 1 and b = 3 limit 10;
>>
>> how can i batch this, and only execute once to get the result
>>
>
>
> --
>
>
>
>
--
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Pho
. So I assume for
> that particular case no tombstone is set but the column is replaced in
> memory and then the 'newest' version is flushed to disk.
>
> Is this assumption correct? Or Is writing the same column an an
> anti-pattern?
>
> I am thankful for any input.
>
I had the same issue and overcame it by querying for primary keys over all
subset s of the token range/ring.
———
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Backend Engineer
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Phone: +46 708 84 18 32
Web: www.tink.se
Facebook Linkedin Twitter
On Thu, Jan 29, 2015 at 10:32 PM, Ravi Agrawal
se hector to this?
I have no personal experience with Hector, but I suppose so.
Cheers,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
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Facebook Linkedin Twitter
On Mon, Jan 26, 2015 at 9:57 AM, Parth Setya
wrote:
which could be pretty messy.
Cheers,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
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Facebook Linkedin Twitter
On Mon, Jan 26, 2015 at 7:40 AM, Parth Setya
wrote:
> Hi
> *Setup*
> *3 Node Cluster*
> Api-
&
Hi,
Datastax comes with sstablekeys that does that. You could also use sstable2json
script to find keys.
Cheers,
Jens
On Tue, Jan 20, 2015 at 2:53 PM, Edson Marquezani Filho
wrote:
> Hello, everybody.
> Does anyone know a way to list, for an arbitrary column family, all
> the rows owned (incl
Hi Jason,
Have you checked the Cassandra log?
Cheers,
Jens
On Fri, Jan 16, 2015 at 10:59 AM, Jason Wee wrote:
> $ cqlsh 192.168.0.2 9042
> Connected to just4fun at 192.168.0.2:9042.
> [cqlsh 5.0.1 | Cassandra 2.1.1 | CQL spec 3.2.0 | Native protocol v3]
> Use HELP for help.
> cqlsh> DESCRIBE K
interested.
Cheers,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
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ar
tombstone_failure_threshold: 10
Can anyone explain why Cassandra is overwhelmed when I’m nowhere near the hard
limit?
Thanks,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook Linkedin Twitter
Thanks for input, Rob. Just making sure, is "older version" the same as "less
than version 2"?
On Mon, Jan 5, 2015 at 8:13 PM, Robert Coli wrote:
> On Mon, Jan 5, 2015 at 2:52 AM, Jens Rantil wrote:
>> Since repair is a slow and daunting process*
?
* I know incremental repair is coming up, but I don’t consider it stable enough.
Thanks,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook Linkedin Twitter
...they have a somewhat different conflict/repair resolutions, too.
On Thu, Jan 1, 2015 at 8:06 PM, DuyHai Doan wrote:
> Storage-engine wise, they are almost equivalent, thought there are some
> minor differences:
> 1) with Set structure, you cannot store more that 64kb worth of data
> 2) collec
gt; create a "row tomstone" and not one tombstone per column, fortunately
> On Fri, Dec 26, 2014 at 10:50 AM, Jens Rantil wrote:
>> Hi,
>>
>> I am considering tuning the tombstone warn/error threshold.
>>
>> Just making sure; If I INSERT one (CQL) row
Hi,
I am considering tuning the tombstone warn/error threshold.
Just making sure; If I INSERT one (CQL) row populating all six columns and
then DELETE the inserted row, will Cassandra write 1 "range tombstone" or
seven tombstones (one per columns plus "row marker")?
Thanks,
Jens
Hi,
Does this have anything to do with Cassandra? Also, please try to avoid cross
posting; It makes it hard for
- future readers to read the full thread.
- anyone to follow the full thread.
- anyone to respond. I assume there are few who are enrolled to both mailing
lists at the same time.
Than
Hi again,
A follow-up question (to my yet unanswered question):
How come the first localDeletion is Integer.MAX_VALUE above? Should it be?
Cheers,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook Linkedin
the status of that.
2 - `nodetool status` is your friend. It will tell you whether the cluster
considers other nodes reachable or not. Run it on a node in the datacenter that
you’d like to test connectivity from.
Cheers,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran
tes for strong consistency.
> What do you say?
>
> Another question is (and I know it depends on many factors but I'd like to
> hear an experienced estimation): How much time would take to rebuild a 250G
> data node?
>
> Thanks in advance,
> Or.
>
> --
> O
=1418720184675000, localDeletion=1418720184] ...
in system.log. My primary key is ((userid uuid), id uuid). Is it possible
for me to see from this output which partition key and/or ranges that has
all of these tombstones?
Thanks,
Jens
--
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone
alternatives here?
In the best of worlds, the fetchSize property would also honour the number of
tombstones, but I don’t think that would be possible, right?
Thanks,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook Linkedin
Maybe checking which thread(s) would hint what's going on? (see
http://www.boxjar.com/using-top-and-jstack-to-find-the-java-thread-that-is-hogging-the-cpu/).
On Wed, Dec 17, 2014 at 1:51 AM, Arne Claassen wrote:
> Cassandra 2.0.10 and Datastax Java Driver 2.1.1
> On Dec 16, 2014, at 4:48 PM, Ry
For the first row, the key is: (2014, N, 1, සියළුම, යුද්ධ) and the value-part
is (664).
Cheers,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook Linkedin Twitter
On Tue, Dec 16, 2014 at 2:25 PM, Chamila
Hi Robert ,
Maybe you need to flush your memtables to actually see the disk usage increase?
This applies to both hosts.
Cheers,
Jens
On Sun, Dec 14, 2014 at 3:52 PM, Robert Wille wrote:
> I have a cluster with RF=3. If I shut down one node, add a bunch of data to
> the cluster, I don’t see a
improvements would obviously be to not hardcode `us:` and support the
other histograms. Also, this logic should maybe even be moved into the
`nodetool cfhistogram` since these are fairly common metrics for latency.
Cheers,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone
Maybe slightly off-topic, but what is a mutation? Is it equivalent to a CQL
row? Or maybe a column in a row? Does include tombstones within the selected
range?
Thanks,
Jens
On Thu, Dec 11, 2014 at 9:56 PM, Ryan Svihla wrote:
> Nothing magic, just put in there based on experience. You can find
Hi,
I don’t know if this is “best practice”, but you could do this using mocking if
nothing else.
Cheers,
Jens
———
Jens Rantil
Backend engineer
Tink AB
Email: jens.ran...@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se
Facebook Linkedin Twitter
On Tue, Dec 9, 2014 at 8:42 PM, Clint
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