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*Tom Nora *
*Startup Growth & Funding*
The Book --
<https://itunes.apple.com/us/author/tom-nora/id1208687100?mt=11>HACKING THE
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*linkedin <http://www.linkedin.com/in/tomnora/en> | twitte
h> INSERT INTO ts.timestamps (id, ts) VALUES (1,
8ad72660-f629-11eb-a217-e1a09d8bc60c);
cassandra@cqlsh> select dateOf(ts) from ts.timestamps where id = 1;
system.dateof(ts)
-
2021-08-05 20:13:04.838000+0000
```
Is there a better/faster way to do this?
Once aga
e /path/to/data/keyspace/table-(id)/ on disk
>
> If any of those dont match, you've got a problem waiting to bite you on
> next restart.
>
>
>
> On Fri, Oct 15, 2021 at 3:48 PM Tom Offermann
> wrote:
>
>> So, if I were to do `CONSISTENCY ALL; select *` from each
So, if I were to do `CONSISTENCY ALL; select *` from each of the
system_schema tables, then on-disk and in-memory should be in sync?
On Fri, Oct 15, 2021 at 3:38 PM Jeff Jirsa wrote:
> Heap dumps + filesystem inspection + SELECT from schema tables.
>
>
> On Fri, Oct 15, 2021 at
>
>
> On Fri, Oct 15, 2021 at 3:02 PM Tom Offermann
> wrote:
>
>> Jeff,
>>
>> Thanks for describing the race condition.
>>
>> I understand that performing concurrent schema changes is dangerous, and
>> that running an `ALTER KEYSPACE` on one n
n unchanged.
But, when we saw the schema collision that I described in this thread, that
resulted in new table IDs in `system_schema.tables`. Why do these table IDs
normally remain unchanged? What caused new ones to be generated in the
error case I described?
--Tom
On Wed, Oct 13, 2021 at 1
Vytenis,
I ran the `ALTER KEYSPACE` command on one of the original `dc1` nodes.
Should it make any difference? My understanding was that it could be run
from any node in either datacenter. But, if there's a reason to prefer
running it on a new datacenter node, I'm happy to do it that w
Stefan,
Yes, this is probably one of many good reasons to upgrade!
Upgrading to Cassandra 4.0 is definitely on our roadmap, but we're hoping
to do these migrations first before we upgrade.
However, if we keep running into this problem, we may have to rethink that
ordering.
--Tom
On Wed
in the Datastax article with
great success.
## Questions
* My understanding is that running concurrent schema updates should always
be avoided, since that can result in schema collisions. But, in this case,
I wasn't performing multiple schema updates. I was just running a single
`ALTER KEYSPACE` statement. Any idea why a single schema update would
result in a schema collision and two data directories per table?
* Should I have waited longer before restarting nodes? Perhaps, given
enough time, the Cassandra nodes would have all converged on the correct
schema version, and this would have resolved on it's own?
* Any suggestions for how I can avoid this problem in the future?
--
Tom Offermann
Lead Software Engineer
http://newrelic.com
ations, but specific single-range repairs.
Tom van der Woerdt
Senior Site Reliability Engineer
Booking.com BV
Vijzelstraat Amsterdam Netherlands 1017HL
[image: Booking.com] <https://www.booking.com/>
Making it easier for everyone to experience the world since 1996
43 languages, 214+ offices
ot particularly
problematic.
In my experience it's the small clusters that wake you up ;-)
Tom van der Woerdt
Senior Site Reliability Engineer
Booking.com BV
Vijzelstraat Amsterdam Netherlands 1017HL
[image: Booking.com] <https://www.booking.com/>
Making it easier for everyone to ex
n the automation. Scaling up
or down takes a while, but it doesn't appear to be slower than any other
cluster. Configuration wise it's no different than a 5-node cluster either.
Pretty uneventful tbh.
Tom van der Woerdt
Senior Site Reliability Engineer
Booking.com BV
Vijzelstraat Amsterdam Net
that
TTL. What then happens to that empty partition and key that had no TTL?
(assuming no more writes will happen to that unique partition key). Will
they remain in the keyspace indefinitely? Does this pose any challenges in
terms of performance/housekeeping?
Thanks
Tom
t we certainly don't run our clusters manually
Tom van der Woerdt
Site Reliability Engineer
Booking.com B.V.
Vijzelstraat 66-80 Amsterdam 1017HL Netherlands
[image: Booking.com] <https://www.booking.com/>
Empowering people to experience the world since 1996
43 languages, 214+ off
astax-cassandra-spark-solr-performance/
>
>
>
> On Wed, Feb 27, 2019 at 4:36 AM Tom Wollert
> wrote:
>
>> Is it possible to get the current connection status out of Cassandra C#
>> driver?
>>
>> In particular I'm looking at getting
>> - connected hosts
&g
n(per keyspace, as the connectionpool is not
shared)
- the number of current read/writes (per keyspace/host ideally)
Which seems to be internal state that is never exposed.
Any ideas before I use reflection to look at the internal state?
Cheers,
Tom
--
<https://codeweavers.net>
*Codeweave
All below AFAIK
a) The query will only be retried after half the timeout has passed, if the
query is idempotent (you have to set that on prepare statement, otherwise
it will assume it isn't)
b) Querytimeout can be set globally in the
Cluster.Builder().WithQueryTimeout
c) The LoadBalancingPolicy sh
e than 20 odd guids in the set. But it appears that cassandra maintains
the tombstones in memory?
We are running 2.1.20
I'd appreciate any pointers!
Cheers,
Tom
--
Development Director
| T: 0800 021 0888 | M: 0790 4489797 | www.codeweavers.net |
| Codeweavers Limited | Barn 4 | Duns
your cluster has a
single large table. STCS is the actual Cassandra default but it often
causes more trouble than it solves, because of large SSTables 🙂
Hope that helps!
Tom
On Wed, 27 Jun 2018 at 08:02, Lucas Benevides
wrote:
> Hello Community,
>
> Is there a maximum SSTable S
Using a statefulset should get you pretty far, though will likely be less
effective than a coreos-style “operator”. Some random points:
For scale-up: a node shouldn’t report “ready” until it’s in the NORMAL state;
this will prevent multiple nodes from bootstrapping at once.
For scale-down: as of
Hi Javier,
When our users ask this question, I tend to answer "keep it above a
billion". More partitions is better.
I'm not aware of any actual limits on partition count. Practically it's
almost always limited by the disk space in a server.
Tom van der Woerdt
Site
community wrt patches. This is why I'd
recommend 3.11.x for new projects.
Stay away from any of the 2.x series, they're going EOL soonish and the
newer versions are very stable.
Tom van der Woerdt
Site Reliability Engineer
Booking.com B.V.
Vijzelstraat 66-80 Amsterdam 1017HL Netherla
at the number of unreachable racks, so if you only care
about nodes you should be able to get rid of most code here.
Tom van der Woerdt
Site Reliability Engineer
Booking.com B.V.
Vijzelstraat 66-80 Amsterdam 1017HL Netherlands
[image: Booking.com] <http://www.booking.com/>
The world
, and may not be reproducible for production workloads.
If you have the infrastructure to test a variety of kernels, I'd be very
interested to see your numbers.
Thanks,
Tom van der Woerdt
Site Reliability Engineer
Booking.com B.V.
Vijzelstraat 66-80 Amsterdam 1017HL Netherlands
Direct +3
o the first row could *maybe* be
explained by CASSANDRA-11500, but the second row can't. The third row is
the one we expect to be there.
Is this a new regression in 3.0.15? Is anyone else experiencing this, or
should I file a ticket?
Thanks,
Tom
--- Full structure: -
CREATE TA
Hi John,
That's the bug I filed the ticket for, yup. I recommend updating to a newer
Cassandra version (3.0.11 or newer), which fixes this issue (and many
others).
Tom
On Wed, May 31, 2017 at 12:39 AM, John Sanda wrote:
> I have Cassandra 3.0.9 cluster that is hitting OutOfMemoryErr
in_ms is 30 ms.
I'm wondering what is causing this timeout?
What is also not clear to me is whether the driver and server timeout apply
to a single page, or to the entire query?
Thanks,
Tom
My understanding is that it's safe... but considering "alter type" is going
to be removed completely (
https://issues.apache.org/jira/browse/CASSANDRA-12443), maybe not.
As for faster ways to do this: no idea :-(
Tom
On Wed, Jan 11, 2017 at 12:12 PM, Benjamin Roth
wrote:
>
nt.
There's a small performance impact with the varint encoding and decoding
scheme, but likely insignificant for any reasonable use case.
Tom
cqlsh> select * from foo where id in (1, 128, 256, 65535, 65536, 16777215,
16777216, 2147483647);
id | value
+---
1
Hi Benjamin,
bigint and int have incompatible serialization types, so that won't work.
However, changing to 'varint' will work fine.
Hope that helps.
Tom
On Wed, Jan 11, 2017 at 9:21 AM, Benjamin Roth
wrote:
> Hi there,
>
> Does anyone know if there is a hack to cha
er period that suits your situation. Retrieving all changes in a
specific time frame is done by retrieving all relevant periods.
Tom
Thanks guys. I've upgraded to 2.2.5, and the problem is gone.
Tom
On Wed, Mar 9, 2016 at 10:47 PM, Robert Coli wrote:
> On Mon, Mar 7, 2016 at 1:25 PM, Nate McCall
> wrote:
>
>>
>>> Rob, can you remember which bug/jira this was? I have not been able to
>
A-10547)
>
I've been bitten by this one some time ago, too. I stopped using
collections because of this. The table in question doesn't use them either.
Thanks for the suggestion anyway!
Tom
a this was? I have not been able to find
it.
I'm using 2.1.9.
Thanks a lot for pointing me in this direction!
Tom
values ?
>
> On Sat, Mar 5, 2016 at 7:16 PM, Tom van den Berge
> wrote:
>
>> I don't think compression can be the cause of the difference, because of
>> two reasons:
>>
>> 1) The partition size I calculated myself (3 MB) is the uncompressed
>> size,
lated size would have been the compressed size. The
compression would be 0.125% of the original, which is not realistic. In the
logs, I can see that the typical compression that is achieved for this
table is around 80% of the original.
Tom
On Fri, Mar 4, 2016 at 9:48 PM, Robert Coli wrote:
> On
time to time, I'm noticing relatively bad latencies when such
partitions are (fully) queried. So I'm not fully convinced that the actual
partition size is not in the order of 1 or 2 GB. Does anyone have an
explanation for these discrepancies?
Thanks,
Tom
Thanks Sebastian, a restart solved the problem!
On Wed, Oct 14, 2015 at 3:46 PM, Sebastian Estevez <
sebastian.este...@datastax.com> wrote:
> We still keep endpoints in memory. Not sure how you git to this state but
> try a rolling restart.
> On Oct 14, 2015 9:43 AM, &qu
has its
> own set of system tables. -ml
>
> On Wed, Oct 14, 2015 at 9:17 AM, Tom van den Berge <
> tom.vandenbe...@gmail.com> wrote:
>
>> Hi Carlos,
>>
>> I'm using 2.1.6. The mysterious node is not in the peers table. Any other
>> ideas?
>>
Hi Carlos,
I'm using 2.1.6. The mysterious node is not in the peers table. Any other
ideas?
One of my existing nodes is not present in the system.peers table, though.
Should I be worried?
Regards,
Tom
On Wed, Oct 14, 2015 at 2:27 PM, Carlos Rolo wrote:
> Check system.peers table to se
I have removed a node with nodetool removenode, which completed ok.
Nodetool status does not list the node anymore.
But since then, Im seeing messages in my other nodes log files referring to
the removed node:
INFO [GossipStage:38] 2015-10-14 11:18:26,322 Gossiper.java (line 968)
InetAddress /10
On Thu, Sep 24, 2015 at 12:45 AM, Robert Coli wrote:
> On Wed, Sep 23, 2015 at 7:09 AM, Tom van den Berge <
> tom.vandenbe...@gmail.com> wrote:
>
>> So it seems that Cassandra simply doesn't have enough memory. I'm trying
>> to understand if this can be cau
G ram.
It would be great if you could respond to my initial question though.
Thanks,
Tom
On Wed, Sep 23, 2015 at 4:14 PM, Sebastian Estevez <
sebastian.este...@datastax.com> wrote:
> This is interesting, where are you seeing that you're collecting 50% of
> the time? Is your env.sh
here, and I would love to know it before upgrading my servers with
more memory.
Thanks,
Tom
count" in the cfstats for the index go up with
almost 20! When doing the same query on one of my "good" nodes, it only
increases with a small number, as I would expect.
Could it be that the use of vnodes is causing these problems?
Regards,
Tom
On Mon, Sep 14, 2015 at 8:09
, like garbage
collection warnings. I also did not see any strange things in the tpstats.
The only difference I'm aware of between the old and new DC is the use of
vnodes.
Any help is appreciated!
Thanks,
Tom
>
>
> I've learned from experience that the node immediately joins the cluster,
>> and starts accepting reads (from other DCs) for the range it owns.
>
>
> This seems to be the incorrect assumption at the heart of the confusion.
> You "should" be able to prevent this behavior entirely via correct u
cause of the
problem.
I'm very happy to finally know the cause of this problem! Thanks for
pointing me in the right direction.
Tom
On Tue, Sep 8, 2015 at 9:13 PM, Nate McCall wrote:
> Just to be sure: can this bug result in a 0-row result while it should be
>> > 0 ?
>>
> P
> Running nodetool rebuild on a node that was started with join_ring=false
>> does not work, unfortunately. The nodetool command returns immediately,
>> after a message appears in the log that the streaming of data has started.
>> After that, nothing happens.
>
>
> Per driftx, the author of CASSAND
Just to be sure: can this bug result in a 0-row result while it should be >
0 ?
Op 8 sep. 2015 6:29 PM schreef "Tyler Hobbs" :
> See https://issues.apache.org/jira/browse/CASSANDRA-9753
>
> On Tue, Sep 8, 2015 at 10:22 AM, Tom van den Berge <
> tom.vandenbe...@gmai
Key cache hit for sstable 389
| 10.55.156.67 | 10586 | SharedPool-Worker-3
My question is: how is it possible that the query is sent to a node in DC2?
Since DC1 has 2 nodes and RF 1, the query should always be sent to the
other node in DC1 if the coordinator does not have a replica, right?
Thanks,
Tom
t to it. Streaming data
across the Atlantic takes a lot more time :(
>
> kind regards,
> Christian
>
> PS: I would love to see the results, if you perform any tests on the
> write-survey. Please share it here on the mailing list :-)
>
>
>
> On Mon, Sep 7, 2015 at 11:10
ry fail to find a
replica, right?
On Tue, Sep 8, 2015 at 4:40 AM, Anuj Wadehra wrote:
> Hi Tom,
>
> While reading data ( even at CL LOCAL_QUORUM), if data in different nodes
> required to meet CL in your local cluster doesnt match, data will be read
> from remote dc for read rep
s from other DCs. The bad thing is that a) I can't
choose where it streams its data from, and b) the two nodes I've been
trying to bootstrap crashed when they were almost finished...
On Mon, Sep 7, 2015 at 10:22 PM, horschi wrote:
> Hi Tom,
>
> this sounds very much like my thread
Running nodetool rebuild on a node that was started with join_ring=false
does not work, unfortunately. The nodetool command returns immediately,
after a message appears in the log that the streaming of data has started.
After that, nothing happens.
Tom
On Fri, Sep 12, 2014 at 5:47 PM, Robert
NetworkTopologyStrategy
On Mon, Sep 7, 2015 at 4:39 PM, Ryan Svihla wrote:
> What's your keyspace replication strategy?
>
> On Thu, Sep 3, 2015 at 3:16 PM Tom van den Berge <
> tom.vandenbe...@gmail.com> wrote:
>
>> Thanks for your help so far!
>>
>&g
Thanks for your help so far!
I have some problems trying to understand the jira mentioned by Rob :(
I'm currently trying to set up the first node in the new DC with
auto_bootstrap = true. The node then becomes visible with status "joining",
which (hopefully) prevents other DCs from sending querie
hu, Sep 3, 2015 at 11:53 AM, Tom van den Berge <
> tom.vandenbe...@gmail.com> wrote:
>
>> Hi Bryan,
>>
>> I'm using the PropertyFileSnitch, and it contains entries for all nodes
>> in the old DC, and all nodes in the new DC. The replication factor for both
&
to be fine.
With the second approach (join_ring=false), they don't show up at all,
which is also what I expected.
On Thu, Sep 3, 2015 at 8:44 PM, Bryan Cheng wrote:
> Hey Tom,
>
> What's your replication strategy look like? When your new nodes join the
> ring, can you verif
the new DC, but somehow they don't in my situation.
How is it possible that queries are routed to the new, emtpy data center?
And more importantly, how can I prevent it?
Thanks,
Tom
5 at 9:23 AM, Tom van den Berge
> wrote:
>
>> I've upgraded a node from 2.0.10 to 2.1.6. Before taking down the node,
>> I've run nodetool upgradesstables and nodetool scrub.
>>
>> When starting up the node with 2.1.6, I'm getting a MarshalException
>>
he old
2.0.10 again. Does anyone have an idea how this can be fixed?
Thanks,
Tom
ERROR 13:51:57 Exception encountered during startup
org.apache.cassandra.serializers.MarshalException: unable to make version 1
UUID from 'currencyCode'
at org.apache.cassandra.db.marshal.UUIDType.fromString(UUI
still see that
error.
If I remove "IF NOT EXISTS" from cql, insert passed.
Please advice. thx.
best regards
Tom
g", similar to a node that is being bootstrapped?
Tom
On Thu, Sep 11, 2014 at 11:10 PM, Tom van den Berge
wrote:
> Thanks, Rob.
> I actually tried using LOCAL_ONE instead of ONE, but I still saw this
> problem. Maybe I missed some queries when updating to LOCAL_ONE. Anyway,
> it&#
Thanks, Rob.
I actually tried using LOCAL_ONE instead of ONE, but I still saw this
problem. Maybe I missed some queries when updating to LOCAL_ONE. Anyway,
it's good to know that this is supposed to work.
Tom
On Thu, Sep 11, 2014 at 10:28 PM, Robert Coli wrote:
> On Thu, Sep 11, 2014
data
is not complete yet, it can't return anything. This seems to be a dangerous
side effect of this procedure, and therefore can't be used.
Thanks
Tom
d
queries in my client. I can't understand why.
Any help is greatly appreciated.
Thanks,
Tom
It turns out this is caused by an earlier, failed attempt to upgrade.
Removing all pre-sstablemetamigration snapshot directories solved the issue.
Credits to Markus Eriksson.
On Wed, Jun 11, 2014 at 9:42 AM, Tom van den Berge
wrote:
> No, unfortunately I haven't.
>
>
>
&
de cluster, with consistency level ONE.
Thanks,
Tom
No, unfortunately I haven't.
On Tue, Jun 10, 2014 at 5:35 PM, Chris Burroughs
wrote:
> Were you able to solve or work around this problem?
>
>
> On 06/05/2014 11:47 AM, Tom van den Berge wrote:
>
>> Hi,
>>
>> I'm trying to migrate a development clu
ng startup
java.lang.RuntimeException: Tried to create duplicate hard link to
/Users/tom/cassandra-data/data/drillster/Account/snapshots/pre-sstablemetamigration/drillster-Account-ic-65-Filter.db
at
org.apache.cassandra.io.util.FileUtils.createHardLink(FileUtils.java:75)
ters reset every time they are logged, or e.g. every
x minutes?
Any help is greatly appreciated!
Thanks,
Tom
ters reset every time they are logged, or e.g. every
x minutes?
Any help is greatly appreciated!
Thanks,
Tom
ght have missed?
Thanks for your feedback -- it's highly appreciated!
Tom
On Fri, Dec 6, 2013 at 4:41 PM, Rahul Menon wrote:
> Tom,
>
> you should look at phi_convict_threshold and try and increase the value if
> you have too much chatter on your network.
>
> Also, rebuilding
Hi Chris,
I think streaming is used for repair tasks, bulk loading and that kind of
things, but not for regular replication traffic.
I think you're right that I should look into network tools. I don't think
cassandra can supply this information.
Thanks,
Tom
On Wed, Dec 4, 2013
To start up your node again, you could delete the stored key caches (
/var/lib/cassandra/saved_caches/*).
Regards,
Tom
On Wed, Dec 4, 2013 at 7:46 PM, Krishna Chaitanya wrote:
> Hey Nate,
> Thanks for the reply. The link was really good...!!! Looking
> forward to making the
not be able to
handle the data quickly enough, resulting in stored hints. The
HintedHandoff task that is started is targeting that remote node.
Thanks,
Tom
On Tue, Dec 3, 2013 at 2:22 PM, Rahul Menon wrote:
> Tom,
>
> Do you know why these hints are piling up? What is the size of the
, but has not finished after a reasonable amount of time.
So I guess the only way to see learn the progress is to look inside the
'hints' column family then.I'll give that a try.
Thanks,
Tom
On Tue, Dec 3, 2013 at 1:43 PM, Rahul Menon wrote:
> Tom,
>
> You should check the
Is there a way to know how much data is transferred between two nodes, or
more specifically, between two data centers?
I'm especially interested in how much data is being replicated from one
data center to another, to know how much of the available bandwidth is used.
Thanks,
Tom
Hi,
Is there a way to monitor the progress of a hinted handoff task?
I found the following two mbeans providing some info:
org.apache.cassandra.internal:type=HintedHandoff, which tells me that there
is 1 active task, and
org.apache.cassandra.db:type=HintedHandoffManager#countPendingHints(),
whic
tokens of my nodes.
The reason I'm looking into this is that my cluster suffering every now and
then from never ending (dead) hinted handoff tasks, resulting in a flooding
of hints on the node.
Thanks,
Tom
I'm having the same problem, after upgrading from 1.2.3 to 1.2.10.
I can remember this was a bug that was solved in the 1.0 or 1.1 version
some time ago, but apparently it got back.
A workaround is to delete the contents of the saved_caches directory before
starting up.
Tom
On Tue, N
This is because time2 is not part of the primary key. Only the primary key
column(s) can be queried with > and <. Secondary indexes (like your
timeuuid_test2_idx) can only be queried with the = operator.
Maybe you can make time2 also part of your primary key?
Good luck,
Tom
On Mon,
ne of your indexes results in a rollback of the entire
transaction.
I hope this is helpful to you.
Tom
On Mon, Nov 4, 2013 at 12:20 PM, Thomas Stets wrote:
> What is the best way to manage index tables on update/deletion of the
> indexed data?
>
> I have a table containing all kinds
start testing.
I'm using it in many unit tests (although formally it's not a unit test
anymore when relying on a cassandra node). The fantastic performance of
Cassandra even allows me to clear all column families and insert the test
fixture rows for each individual test case.
Good luck,
Tom
e, which is
> responsible for storing index data.
>
> MBean you should look for looks like this:
>
>
> org.apache.cassandra.db:type=IndexColumnFamilies,keyspace=,columnfamily=.
>
> M.
>
> W dniu 07.10.2013 15:22, Tom van den Berge pisze:
>
> On a 2-node cluster with replic
the internal Cassandra's one, which is
> responsible for storing index data.
>
> MBean you should look for looks like this:
>
> org.apache.cassandra.db:type=**IndexColumnFamilies,keyspace=<**
> KS>,columnfamily=.
>
> M.
>
> W dniu 07.10.2013 15:22, Tom va
static data; it doesn't change.
I'm running cassandra 1.2.3. I'm running a nodetool repair on each node
every day (although this does not fix this problem).
This problem worries me a lot. I don't have a clue about the cause of it.
Any help would be greatly appreciated.
Tom
an be the reason for the handoff process not to finish?
- What would be the best way to recover from this situation?
- What can be done to prevent this from happening again?
Thanks in advance,
Tom
y logs have the hit 0.75, running compaction OR worse hit 0.85
> running compaction….you get that if the above is the case typically.
>
> Dean
>
> From: Tom Martin mailto:tompo...@gmail.com>>
> Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.
from several components (related to dimensions such as time and
version), so you can not expect a random distribution over the whole space.
Cheers
Tom
On Wed, Oct 3, 2012 at 5:39 PM, Andrey Ilinykh wrote:
> Hello, everybody!
>
> I'm observing very strange behavior. I have 3 nod
Having the both the commit log and data directory on the same volume is
generally not recommended. You would actually see a performance decrease
unless you can have most your reads be cache hits.
On Friday, August 10, 2012, Thibaut Britz wrote:
> Hi,
>
> Has anyone of you made some experience wit
Is there documentation on a way to create a pre-CQL3 composite column CF with
indexing that will be compatible with the built-in composite column
capabilities in CQL3?
--
Tom Duffield
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
nt to access your Cassandra data (for example:
astyanax)
Good luck,
Tom
On 06/11/2012 11:15 PM, James Pirz wrote:
Hi,
Thanks for the reply,
But can you tell me how do you form your request URLs,
I mean does Cassandra support a native RESTful api for talking to the
system, and if yes, on
PROD system. Unless you
manage your Cassandra ring closely, other CONSISTENCY settings could result in
data being read from DR.
Hope this helps!
Tom
--
Tom Duffield (Mailing Lists)
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
On Friday, May 18, 2012 at 12:51 AM, Roshan wrote
Kirk is correct.
--
Tom Duffield (Mailing Lists)
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
On Monday, May 14, 2012 at 1:41 PM, Kirk True wrote:
> Disclaimer: I've never tried, but I'd imagine you can drop a JAR
> containing the class(es) into the lib directo
Hey,
There is a push to use Akamai IPA to accelerate traffic between our
Cassandra nodes. Ignoring all other complexities this introduces, is it
possible to use CNAMEs for broadcast addresses? I'm also assuming this
restricts us to using only the PropertyFileSnitch (since we are not
strictly in the
When you submit a write request with a constancy of EACH_QUORUM, what network
protocol does Cassandra use to write the data to the other DCs?
Similarly, what network protocol does Cassandra use when writing data as part
of replication?
--
Tom Duffield (Mailing Lists)
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>> > I wish to test certain things in Cassandra so can someone help me with
>> > sample database or sample database data generator which can help me
>> > flood Cassandra nodes with large amount of data.
I would recommend YCSB:
https://github.com/brianfrankcooper/YCSB/wiki/
Thanks,
Tom
file paths; it
works fine out of the box.
I've set it up to drop and recreate my keyspace before each test case,
and even then it performs quite good.
Good luck,
Tom
On 12/1/11 5:36 PM, DE VITO Dominique wrote:
Hi,
I want to use Cassandra for (fast) unit testing with a small numb
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