We have some tooling that does that kind of thing using S3 rather than
attached EBS but a similar principle. There is a bit of an overview here:
https://www.instaclustr.com/advanced-node-replace/
It's become a pretty core part of our ops toolbox since we introduced it.
Cheers
Ben
---
The logs between first start and handshaking should give you a clue but my
first guess would be replaying commit logs.
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr> <https://twitter.com/inst
any useful response from the community.
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/company/instaclustr>
Read our latest t
://www.instaclustr.com/certified-apache-cassandra/
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/company/instaclustr>
Read our latest technica
Is the size of the data in your “state” column variable? The higher write
latencies at the 95%+ could line up with large volumes of data for
particular rows in that column (the one column not in both tables)?
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.
the two nodes dieing (although it’s very likely there will be three
replicas from the start if the cluster is in a healthy state at the time of
the write).
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr&
many not have made its way to the third node by the time the first
two replicas are lost. If there is a replica on the third node it can be
recovered to the other two nodes by either rebuild (actually replace) or
repair.
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<ht
In scenario 2, if the row has been written to node 3 it will be replaced on
the other nodes via rebuild or repair.
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr> <https://twitter.com/inst
monitor the dropped mutations metrics.
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/company/instaclustr>
Read our latest t
, changes in topology
without following proper procedure, etc.
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/company/instaclu
inserted (relative to your attempt to
query it)?
Cheers
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/company/instaclustr>
Read our lat
Ben
---
*Ben Slater**Chief Product Officer*
<https://www.instaclustr.com/platform/>
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/company/instaclustr>
Read our latest technical blog posts here
<https://www.in
Is it possible that stress is overloading node 1 so it’s not recovering
state properly when node 2 comes up? Have you tried running with a lower
load (say 2 or 3 threads)?
Cheers
Ben
---
*Ben Slater*
*Chief Product Officer*
<https://www.facebook.com/instaclustr> <https://tw
Maybe stabledump can help you?
https://cassandra.apache.org/doc/4.0/tools/sstable/sstabledump.html
---
*Ben Slater*
*Chief Product Officer*
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/company/instaclustr>
Read our lat
Not in the logs but I think you should be able to use the WRITETIME
function to view via CQL (see
https://cassandra.apache.org/doc/latest/cql/dml.html#select)
Cheers
Ben
---
*Ben Slater*
*Chief Product Officer*
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclust
They don’t do exactly what you want but depending on why you are trying to
get this info you might find our sstable-tools useful:
https://github.com/instaclustr/cassandra-sstable-tools
---
*Ben Slater*
*Chief Product Officer*
<https://www.facebook.com/instaclustr> <https://tw
Yep, cassandra-stress doesn’t attempt to use the cqlshrc file. Seems to me
it could be convenient so might make a nice contribution to the project.
Cheers
Ben
---
*Ben Slater*
*Chief Product Officer*
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclust
(in which case I don’t think there is one but stress has a hell of a lot of
options so I could be wrong).
Cheers
Ben
---
*Ben Slater*
*Chief Product Officer*
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/company/instaclustr>
In what way does the cluster become unstable (ie more specifically what are
the symptoms)? My first thought would be the loss of the node causing the
other nodes to become overloaded but that doesn’t seem to fit with your
point 2.
Cheers
Ben
---
*Ben Slater*
*Chief Product Officer*
<ht
a destructive nature, which may be contained in this attachment
> and shall not be liable for direct, indirect, consequential or special
> damages in connection with this e-mail message or its attachment.
>
--
*Ben Slater*
*Chief Product Officer <https://www.instaclustr.com/>*
t equal so easy calculations here) for
>>> example inserts to table X would go to cluster Y
>>> 2. shard data at loader level by some business logic grouping of data,
>>> for example all rows with some column starting with X would go to cluster Y
>>>
>>> I would appreciate sh
nyone out there
> has established knowledge about the plugin we'd be grateful for any
> assistance!
>
> You can find our fork here:
> https://github.com/instaclustr/cassandra-lucene-index
> At the moment, the only difference is that there is a 3.11.3 branch which
> just h
o PDF e-mail accounts 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
e the keystore in kms
>>> or vault. If any of you already configured please direct me to
>>> documentation for it.
>>>
>>
>
> --
> Jon Haddad
> http://www.rustyrazorblade.com
> twitter: rustyrazorblade
>
--
*Ben Slater*
*Chief Product Officer <h
> Date : Wed, 01 Aug 2018 08:16:06 +0430
> Subject : Re: [EXTERNAL] full text search on some text columns
> Forwarded message
>
> Maybe this plugin could do the job:
> https://github.com/Stratio/cassandra-lucene-index
>
> On Tue, 31 Jul 2018 at 2
ngth_in_kb': '64', 'class':
>> 'org.apache.cassandra.io.compress.LZ4Compressor'}
>>
>> AND crc_check_chance = 1.0
>>
>> AND dclocal_read_repair_chance = 0.1
>>
>> AND default_time_to_live = 0
>>
>
Is there any third party who provides security patches/releases for Apache
> cassandra
>
> For Enterprise use is there any third party who provides certified Apache
> cassandra packages ??
>
> Thanks
> Pranay
>
--
*Ben Slater*
*Chief Product Officer <https://
possibly improve this and share widely.
> [1] Cassandra Benchmarks over Time Series Data for IoT Use Case
> <https://sites.google.com/an10.io/timeseries-results>
>https://sites.google.com/an10.io/timeseries-results
>
>
> --
> Regards,
> Arbab Khalil
> Soft
pany has taken reasonable precautions to
> ensure no viruses are present in this email. The company cannot accept
> responsibility for any loss or damage arising from the use of this email or
> attachment."
>
--
*Ben Slater*
*Chief Product Officer <https://www.i
>> assumption is these operations would need to be atomic( and may be
>> supporting other ACID properties) . How these kind of operations/usecases
>> being handled in Cassandra/NoSQL world?
>>
>> Appreciate your response.
>>
>> Thanks,
>> Rajesh
>
s it mean that in my case read repair does not work at
>> all? Is there any way to enable read repair across DCs and stay will
>> consistency ONE for reads?
>>
>>
>> #1 https://www.datastax.com/dev/blog/common-mistakes-and-misconceptions
>> #2
>> https://docs.datastax.co
meout you won’t have a way to
>>> know if it worked or not.
>>>
>>> There is no way to rollback a statement/batch, the only way is to send
>>> an update to modify the partition to its previous state.
>>>
>>>
>>>
>>> Regards,
>>>
>
Sent using Zoho Mail <https://www.zoho.com/mail/>
>
>
> ---- On Sun, 18 Mar 2018 13:14:54 +0330 *Ben Slater
> >* wrote
>
> When you say batch was worth than async in terms of throughput are you
> comparing throughput with the same number of threads or something? I w
oughput but much less
> CPU usage at client side.
>
> Sent using Zoho Mail <https://www.zoho.com/mail/>
>
>
> On Sun, 18 Mar 2018 12:46:02 +0330 *Ben Slater
> >* wrote
>
> You will probably find grouping writes into small batches improves overall
>
use createSStable mechanism. Is there any tuning which i'm missing
> in client side, cause the server side is already tuned with datastax
> recomendations.
>
> Sent using Zoho Mail <https://www.zoho.com/mail/>
>
>
> --
*Ben Slater*
*Chief Product Officer <https:
KBs
> for javaFunctions scenario
>
> Sent using Zoho Mail <https://www.zoho.com/mail/>
>
>
>
> --
*Ben Slater*
*Chief Product Officer <https://www.instaclustr.com/>*
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclus
s?
> >
> > Thanks,
> > Kyrill
> >
>
>
> ---------
> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org
> For additional commands, e-mail: user-h...@cassandra.apache.org
>
> --
*Ben Slater*
:
> Would it be possible to copy/paste Cassandra data directory from one of
> nodes (which Its OS partition corrupted) and use it in a fresh Cassandra
> node? I've used rf=1 so that's my only chance!
>
> Sent using Zoho Mail <https://www.zoho.com/mail/>
>
>
> -
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
> <https://maps.google.com/?q=Wallingatan+5,+111+60+Stock
ot in sync before?
>
> Thanks,
> Faraz
>
> On Sun, Mar 4, 2018 at 9:46 AM, Ben Slater
> wrote:
>
>> Both CQLSH and the Spark Cassandra query at consistent level ONE
>> (LOCAL_ONE for Spark connector) by default so if there is any inconsistency
>&g
t;> at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>> [na:1.8.0_131]
>> at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
>>
>> *Versions:*
>>
>>- Cassandra 3.9
>>- Spark 2
; before all the coding for basic stuff like installation, configuration
>>> > and maintenance is included!
>>> > >>
>>> > >> Finish the basic coding of Cassandra, make it easy to use for
>>> > administrators, make is smart, add cluster wide management. Keep
>>> > Cassandra competitive or it will soon be the old
; addressee or an authorized designee, you may not copy or use it, or
> disclose it to anyone else. If you received it in error please notify us
> immediately and then destroy it. Dynatrace Austria GmbH (registration
> number FN 91482h) is a company registered in Linz whose registered offi
ale is another thing to consider.
>
>
>
>
>
>
>
>
> --
> *C*heers,*
> *Anshu V*
>
>
> --
*Ben Slater*
*Chief Product Officer <https://www.instaclustr.com/>*
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https
ks in advance
>
> Robert
>
>
> -
> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org
> For additional commands, e-mail: user-h...@cassandra.apache.org
>
--
*Ben Slater*
*Chief Product
eMessages(IncomingTcpConnection.java:178)
> ~[apache-cassandra-3.9.0.jar:3.9.0]
> at
> org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:92)
> ~[apache-cassandra-3.9.0.jar:3.9.0]
> No error in /var/log/cassandra/debug.php on 10.0.0.12
>
> Remembe
; *mfurl...@ancestry.com *
> M: 801-859-7427 <(801)%20859-7427>
>
> O: 801-705-7115 <(801)%20705-7115>
>
> 1300 W Traverse Pkwy
>
> Lehi, UT 84043
>
>
>
>
>
>
> [image: image003.png]
>
>
>
>
>
--
*Ben Slater*
*Chief Product Off
es, and
> higher tier of AWS / GCE instances to run.
>
> Can anyone who has experience scaling Cassandra share their insights?
>
> Costs, metrics (e.g users, requests per second), etc would be really
> helpful!
>
--
*Ben Slater*
*Chief Product Officer <https://
>>>> >>>> Thanks for response.
>>>> >>>>
>>>> >>>> Yes, I could see mutation drops and increase count in
>>>> system.hints. Is there any way , i can proceed to truncate hints like using
>>>> nodetool truncatehints.
>>
w my RetryPolicy to attempt a different (non-LOCAL) consistency
level. I have no choice but to avoid using any kind of LOCAL consistency
level throughout my applications. Is this expected? Or is there anything I
can do about it? Thanks! It certainly seems like a bug to me or at least
something that should
]] finished (progress: 31%)
> [2017-03-15 06:03:15,440] Repair session
> aae06160-0943-11e7-9c1f-f5ba092c6aea for range
> [(-7542303048667795773,-7300899534947316960]] finished (progress: 34%)
> [2017-03-15 06:03:17,786] Repair completed successfully
> [2017-03-15 06:03:17,787] Repair comm
te and read use LOCAL QUOROM.
>
> We have a cluster of 12 nodes which spans across 2 Data Centers and a RF
> of 3.
>
> Has anyone encountered this problem and if yes what steps have you taken
> to solve it
>
> Thanks,
> Charu
>
--
*Ben Slater*
*Chief Product Of
ted experience I would
> find this a terrible idea from the perspective of maintenance (remember the
> old saying about basket and eggs?)
>
> What potential benefits do you see?
>
> Regards,
> --
> Alex
>
> --
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
e roughly equivalent? And probably
> no more complex to generate in the client?
>
> On Thu, 9 Feb 2017 at 20:22 Benjamin Roth wrote:
>
> Maybe that makes it clear:
>
> DELETE FROM ks.cf WHERE (partitionkey1, partitionkey2) IN ((1, 2), (1,
> 3), (2, 3), (3, 4));
>
> If want
ROM ks.cf WHERE (partitionkey1, partitionkey2) IN ((1, 2), (1,
> 3), (2, 3), (3, 4));
>
> If want to delete or select a bunch of records identified by their
> multi-partitionkey tuples.
>
> 2017-02-09 10:18 GMT+01:00 Ben Slater :
>
> Are you looking this to be equivalent to (PK1=
%207161%203048806> · Fax +49 7161 304880-1
> <+49%207161%203048801>
> AG Ulm · HRB 731058 · Managing Director: Jens Kammerer
>
--
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
format, is that 3-5TB still a valid limit?
>
> Does anyone have experience on running Cassandra with 3-5TB compressed
> data ?
>
> Cheers,
> Hannu
--
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
; [1]: (CHANGES.txt) https://goo.gl/J0VghF
> [2]: (NEWS.txt) https://goo.gl/00KNVW
> [3]: https://issues.apache.org/jira/browse/CASSANDRA
>
>
> Great job all on this release.
>
--
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
I wasn’t familiar with Gizzard either so I thought I’d take a look. The
first things on their github readme is:
*NB: This project is currently not recommended as a base for new consumers.*
(And no commits since 2013)
So, Cassandra definitely looks like a better choice as your datastore for a
new p
quot;*;
>
>
>
> - yes, the client is on separate VM
>
> - In our project we use Cassandra API version 3.0.2 but the database
> (cluster) is version 3.9
>
> - for 2node cluster:
>
> first VM: 25 GB RAM, 16 CPUs
>
> second VM: 16 GB RAM, 16 C
You would expect some drop when moving to single multiple nodes but on the
face of it that feels extreme to me (although I’ve never personally tested
the difference). Some questions that might help provide an answer:
- what consistency level are you using for the test?
- what is your keyspace defin
And I’m not aware of any case where it’s a good idea to use SimpleStrategy
in Prod (be interested to hear if anyone else knows of one).
NetworkTopologyStrategy behaves the same as SimpleStrategy in the basic
case of one DC and Rack but gives you a good path to migrate to more
sophisticated topologi
You can have situations where rebuilding a node via streaming is painful
and slow (generally because there is something bad about the data model
like misused secondary indexes or massive partitions). Also, overstreaming
can mean you need more disk space to bootstrap a node than you’ll require
once
finitely a bug to be solved asap.
>
> >Ben
> What do you mean "an undocumented limitation" ?
>
> Thanks,
> Hiro
>
> On Sat, Nov 26, 2016 at 3:13 PM, Ben Slater
> wrote:
> > Nice detective work! Seems to me that it’s a best an undocumented
> limitatio
Nice detective work! Seems to me that it’s a best an undocumented
limitation and potentially could be viewed as a bug - maybe log another
JIRA?
One node - there is a nodetool truncatehints command that could be used to
clear out the hints (
http://cassandra.apache.org/doc/latest/tools/nodetool/tru
If targetting two different tables for the different sizes works then I’ve
submitted a patch for cassandra-stress that allows you to do that:
https://issues.apache.org/jira/browse/CASSANDRA-8780
It would be nice to see someone else test it if you have the appetite to
build it and try it out.
Chee
be more careful to add failure nodes to the existing cluster?
>
> Thanks,
> yuji
>
>
> On Fri, Nov 11, 2016 at 1:00 PM, Ben Slater
> wrote:
>
> From a quick look I couldn’t find any defects other than the ones you’ve
> found that seem potentially relevant to your issue (if any
What load balancing policies are you using in your client code (
https://datastax.github.io/python-driver/api/cassandra/policies.html)?
Cheers
Ben
On Mon, 14 Nov 2016 at 16:22 Andrew Bialecki
wrote:
> We have an odd situation where all of a sudden of our cluster started
> seeing a disproportion
at of 3.0?)
>
> Do you know other bug fixes related to commitlog?
>
> Regards
> yuji
>
> On Wed, Nov 9, 2016 at 11:34 AM, Ben Slater
> wrote:
>
> There have been a few commit log bugs around in the last couple of months
> so perhaps you’ve hit something that was fixed recent
.
> If the flush failed on more than one node, the test would retry step 2.)
> However, if so, the problem would happen without deleting Cassandra data.
>
> Regards,
> yuji
>
>
> On Mon, Oct 24, 2016 at 8:37 AM, Ben Slater
> wrote:
>
> Definitely sounds to me like
What I’ve seen happen a number of times is you get in a negative feedback
loop:
not enough capacity to keep up with compactions (often triggered by repair
or compaction hitting a large partition) -> more sstables -> more expensive
reads -> even less capacity to keep up with compactions -> repeat
T
Compaction cargts
> eventdata.eventdata_event_time_idx 32098562606 42616107664 bytes
> 75.32%
> Active compaction remaining time : 0h11m12s
>
>
> *From:* Ben Slater
> *Date:* 2016-11-07 11:41
> *To:* user
> *Subject:* Re: Is it a memory issue?
>
This sounds to me like your writes go ahead of compactions trying to keep
up which can eventually cause issues. Keep an eye on nodetool
compactionstats if the number of compactions continually climbs then you
are writing faster than Cassandra can actually process. If this is
happening then you need
I can confirm that we do offer support contracts for OSS Apache Cassandra
at Instaclustr (in addition to our managed service) - either drop me an
email direct (signature below) or contact sa...@instaclustr.com and would
be happy to discuss details.
Cheers
Ben
On Fri, 4 Nov 2016 at 14:02 Max C wr
://issues.apache.org/jira/browse/CASSANDRA-7396
Cheers
Ben
On Tue, 25 Oct 2016 at 16:25 Mickael Delanoë wrote:
> I can't do this, otherwhise i won't be able to query the item_id using a
> key with a query like :
> Select * from item_id_by_key where user_id=... and key=
>
> Le
Move item_id_by_key into a collection field in item table? (Would probably
be a “better” C* data model anyway.)
On Tue, 25 Oct 2016 at 16:08 Mickael Delanoë wrote:
> Ok, I understand, thanks.
> So now i would like to know if there is some best practices to do what i
> want.
> I.e inserting entri
ll report the result to you next Monday.
>
> Thanks
>
>
> On Fri, Oct 21, 2016 at 3:05 PM, Ben Slater
> wrote:
>
> Just to confirm, are you saying:
> a) after operation 2, you select all and get 1000 rows
> b) after operation 3 (which only does updates and read) you sel
It’s reasonably common to use Cassandra to cover both online and analytics
requirements, particularly using it in conjunction with Spark. You can use
Cassandra’s multi-DC functionality to have online and analytics DCs for a
reasonable degree of workload separation without having to build ETL (or
so
http://cassandra.apache.org/doc/latest/cql/types.html?highlight=counter#counters
On Sun, 23 Oct 2016 at 19:15 Kant Kodali wrote:
> where does it say counter is implemented as long?
>
> On Sun, Oct 23, 2016 at 1:13 AM, Ali Akhtar wrote:
>
> Probably:
> https://docs.oracle.com/javase/8/docs/api/j
?
Cheers
Ben
On Fri, 21 Oct 2016 at 17:00 Yuji Ito wrote:
> > Are you certain your tests don’t generate any overlapping inserts (by
> PK)?
>
> Yes. The operation 2) also checks the number of rows just after all
> insertions.
>
>
> On Fri, Oct 21, 2016 at 2:51 PM, Ben S
> 2) What replication factor and replication strategy is used by the test
> keyspace? What consistency level is used by your operations?
>
> - create keyspace testkeyspace WITH REPLICATION =
> {'class':'SimpleStrategy','replication_factor':3};
>
n C* node is restarted? (Currently, I
> just restarted C* process)
>
> Regards,
>
>
> On Tue, Oct 18, 2016 at 2:18 PM, Ben Slater
> wrote:
>
> OK, that’s a bit more unexpected (to me at least) but I think the solution
> of running a rebuild or repair still applies.
&
wiped, it's going to start again without a
> bootstrap, and make a single node cluster or join an existing cluster if
> the seed list is valid
>
>
>
> --
> Jeff Jirsa
>
>
> On Oct 17, 2016, at 8:51 PM, Ben Slater
> wrote:
>
> OK, sorry - I think understand
ile, what you need
> to do is to is remove the node first before doing "rejoin".
>
> Cheers,
>
> Yabin
>
> On Mon, Oct 17, 2016 at 1:48 AM, Ben Slater
> wrote:
>
> To cassandra, the node where you deleted the files looks like a brand new
> machine. It doesn
> I'm not sure this causes data lost. All data can be read properly just
> after this rejoin.
> But some rows are lost when I kill&restart C* for destructive tests after
> this rejoin.
>
> Thanks.
>
> --
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
My best guess it that you need to remove the quotes from around the zip
values (ie change if to zip: 20500 rather than zip: ‘20500’ ) as zip is
defined as an int.
Cheers
Ben
On Wed, 28 Sep 2016 at 14:38 zha...@easemob.com wrote:
> Hi, Ben Slater, thank you very much for your replay!
>
'landline' : { country_code: 1, number: '...' } }
> }
> 'work' : {
> street: '1600 Pennsylvania Ave NW',
> city: 'Washington',
> zip: '20500',
> phones: { 'fax' : { country_code: 1, number: '...' } }
> }
> })
>
> error:
>
> SyntaxException: message="line 10:14 mismatched input 'work' expecting '}' (...: '...' } }
> } ['wor]k' :...)">
>
> Is the any suggestion about the problem 2?
>
> Best wishes for everyone, thank you for your watching !
>
> --
> zha...@easemob.com
>
--
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
MemoryError: Java heap space
> ERROR [SharedPool-Worker-157] 2016-09-26 20:51:14,124 Message.java:538 -
> Unexpected exception during request; channel = [id: 0xce43a388, /
> 13.13.13.80:55536 :> /13.13.13.149:9042]
>
> My server has total 256G memory so I set the MAX_HEAP
t
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:1797)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
> at
> org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2466)
> ~[apache-cassandra-3.0.9.jar:3.0.9]
&g
ending the full data we need, we need to chose
> the best possible replica to ask, since if all we get back is checksums we
> have nothing useful to return to the user. The dynamic snitch handles this
> task by monitoring the performance of reads from the various replicas and
> choosin
ecyrd.com/cassandracalculator/,
> every node will store 50% of the data.
>
> When I want to read all data from the cluster, how many nodes should I
> read from, 2 or 1? Is it 2, because each node has half data? But in the
> calculator it show 1: You are really reading from 1 node every
e each node has half data? But in the
> calculator it show 1: You are really reading from 1 node every time.
>
>Any suggestions? Thanks!
>
> Jun
>
--
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
cluster to run
> sstableloader, what methods can I use to load a single keyspace from one
> cluster to another cluster of different size?
>
>
>
> Appreciate the help…
>
>
>
> Thanks,
>
> Justin
>
>
>
--
Ben Slater
Chief Product Officer
Instacl
end
>> more than one file at a time is probably the most obvious area for
>> improvement, and being able to better deal with the CPU / garbage generated
>> on the receiving side is just behind that. You'll likely be able to stream
>> 10-15 MB/s per sending server or cpu core, whichever is less (in a vnode
>> setup, you'll be cpu bound - in a single-token setup, you'll be stream
>> bound).
>>
>>
>>
> --
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
t; io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:419)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:391)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)
> at java.lang.Thread.run(Thread.java:745)
>
> Thanks
> Siddharth
>
--
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
ce and speculative_retry
> options. THe main gotcha is global read repair (via read_repair_chance)
> which will trigger cross-dc repairs at CL ALL in the case of a digest
> mismatch, even if the requested CL is DC-local.
>
>
> On Sun, Aug 28, 2016 at 11:55 AM, Ben Slater
> w
xperiences here.
>
> Thanks
>
> --
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
for the read during the read repair
> is based off the CL of the query. However I don't think that makes sense at
> other CLs. Anyway, I just want to clarify what CL the read for the read
> repair occurs at for cases where the overall query CL is not ALL.
>
> Thanks,
> Kurt.
>
y the safest upgrade is 2.1 to 3.0.x
>
> Best,
>
> Romain
>
>
> --
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
Dcom.sun.management.jmxremote.ssl=false
>> -Dcom.sun.management.jmxremote.authenticate=false
>> -Djava.library.path=/usr/share/cassandra/lib/sigar-bin
>> -XX:+UnlockCommercialFeatures
>> -XX:+FlightRecorder
>> -Dlogback.configurationFile=logback.xml
>> -Dcassandra.logdir=/var/log/cassandra
>> -Dcassandra.storagedir=
>> -Dcassandra-pidfile=/var/run/cassandra/cassandra.pid
>>
>>
>> --
>>
>> We’re hiring if you know of any awesome Java Devops or Linux Operations
>> Engineers!
>>
>> Founder/CEO Spinn3r.com
>> Location: *San Francisco, CA*
>> blog: http://burtonator.wordpress.com
>> … or check out my Google+ profile
>> <https://plus.google.com/102718274791889610666/posts>
>>
>>
>
>
> --
>
> We’re hiring if you know of any awesome Java Devops or Linux Operations
> Engineers!
>
> Founder/CEO Spinn3r.com
> Location: *San Francisco, CA*
> blog: http://burtonator.wordpress.com
> … or check out my Google+ profile
> <https://plus.google.com/102718274791889610666/posts>
>
> --
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
1 - 100 of 118 matches
Mail list logo
