It is fixed in 3.11.2 https://issues.apache.org/jira/browse/CASSANDRA-13916
On Thu, 11 Oct 2018 at 02:10 prachirath72 wrote:
> Thanks Jonathan,
> Is there a ticket/bugid to remove this openjdk WARN.
> Want to have a look .
>
>
> Original message
> From: Jonathan Haddad
> Dat
://github.com/instaclustr/cassandra-sstable-tools which will provided
you with the desired info, plus more info you might find useful.
Christophe Schmitz - Instaclustr <https://www.instaclustr.com/> - Cassandra
| Kafka | Spark Consulting
On Tue, 2 Oct 2018 at 11:31 Pranay akula wrote:
>
Have a look at using Spark on Cassandra. It's commonly used for data
movement / data migration / reconciliation (on top of analytics). You will
get much better performances.
Christophe Schmitz - Instaclustr <https://www.instaclustr.com/> - Cassandra
| Kafka | Spark Consulting
On
ication on the secondary DC. Once
you are happy, you can decommission the old version DC (check carefully
your application endpoint configuration, local_dc configuration)
Hope this helps.
Christophe Schmitz - Instaclustr <https://www.instaclustr.com/> - Cassandra
| Kafka | Spark Cons
Table B during this process.
Please test first :)
Cheers,
Christophe
Christophe Schmitz - Instaclustr <https://www.instaclustr.com/> - Cassandra
| Kafka | Spark Consulting
On Tue, 2 Oct 2018 at 09:18 Richard Xin
wrote:
> I have a tableA with about a few ten millions record, and I ha
STCS.
Hope this help!
Cheers,
Christophe
Christophe Schmitz - Instaclustr <https://www.instaclustr.com/> - Cassandra
| Kafka | Spark Consulting
On Fri, 28 Sep 2018 at 14:43 Suresh Rajagopal wrote:
> Hi,
>
> I am new to Cassandra. Is there any recommended maximum data size
MV yes,
SASI not sure, I would guess yes.
On 2 May 2018 at 18:00, Hannu Kröger wrote:
> Ah, you are correct!
>
> However, it’s not being updated anymore AFAIK. Do you know if it support
> the latest 3.x features? SASI, MV, etc. ?
>
> Hannu
>
>
> On 24 Apr 2018, a
les??
>
> I knew when we are doing a major upgrade we have to run upgrade sstables
> so that sstables will be re-written to newer version with additional meta
> data.
>
> But do we need to run upgrade sstables for upgrading from let's say 3.0.15
> to 3.0.16 or 3.0.y to 3.11.
Hi Hannu ;)
>
> I have been asked many times that what is a good GUI client for Cassandra.
>> DevCenter is not available anymore and DataStax has a DevStudio but that’s
>> for DSE only.
>>
>
DevCenter is still available, I just downloaded it.
Cheers,
Christophe
, i.e. using cassandra-stress. The goal
is usually to confirm the throughput / latency. As a side effect, this also
gives the disk usage.
Hope it helps!
Cheers,
Christophe
>
> Thanks in advance
>
> Sent using Zoho Mail <https://www.zoho.com/mail/>
>
>
>
--
*Christophe Schmitz - **VP Consulting*
AU: +61 4 03751980 / FR: +33 7 82022899
ning nodetool cleanup on the next node.
>
> I had added a new node to the cluster, and running nodetool cleanup
> according to this recommendation - but it takes near 10 days to complete on
> a single node. Is it safe to start it on all nodes?
>
--
*Christophe Schmitz - **VP
ent from my iPhone
>
> On Apr 8, 2018, at 4:15 AM, onmstester onmstester
> wrote:
>
> Is there any way to copy some part of a table to another table in
> cassandra? A large amount of data should be copied so i don't want to fetch
> data to client and stream it bac
718-844-3841
> PA,USA
>
> Sent from my iPhone
> -
> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org
> For additional commands, e-mail: user-h...@cassandra.apache.org
>
>
--
*Christophe Schmitz - **VP Consulting*
AU: +61 4 03751980 / FR: +33 7 82
the edge here, but is there a way to execute an external
> program if a new row is added or if an existing row is updated on a table?
>
> Cheers,
> Earl
>
> --
> There are seven words in this sentence.
>
--
*Christophe Schmitz - **VP Consulting*
AU: +61 4 0375
first thought was that this is related
> to the EBS volumes, but it seems too consistent to be actually caused by
> that. The problem is consistent across multiple replacements, and multiple
> EC2 regions.
>
> I appreciate any suggestions!
>
> - Mike
>
--
*Christophe Schmi
one
> could point me the direction, it will be of great help.
>
> Thanks !
>
--
*Christophe Schmitz - **VP Consulting*
AU: +61 4 03751980 / FR: +33 7 82022899
<https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr>
<https://www.linkedin.com/compa
lass.
> targetTypeName(TypeConverter.scala:36)
> at com.datastax.spark.connector.types.TypeConverter$
> CollectionConverter.targetTypeName(TypeConverter.scala:682)
> at com.datastax.spark.connector.rdd.reader.
> GettableDataToMappedTypeConverter.tryConvert(
> GettableDataToMappedTypeConverter.scala:156)
&g
ument and tried setting up the metric as following,
> does this is not matching with the total read requests. I am using
> "ReadLatency_OneMinuteRate"
>
> /org.apache.cassandra.metrics:type=ColumnFamily,keyspace=*,
> scope=*,name=ReadLatency
>
> On Thu, Aug 31, 2017 at
Hello Jai,
Did you have a look at the following page:
http://cassandra.apache.org/doc/latest/operating/metrics.html
In your case, you would want the following MBeans:
org.apache.cassandra.metrics:type=Table keyspace= scope=
name=
With MetricName set to ReadLatency and WriteLatency
Cheers,
Chris
i
>
> On Mon, Aug 21, 2017 at 3:43 AM, Christophe Schmitz <
> christo...@instaclustr.com> wrote:
>
>> Hi Avi,
>>
>> Have you thought of using Spark for that work? If you collocate the spark
>> workers on each Cassandra nodes, the spark-cassandra connector wi
efficient but how about the approach presented here
>>> <http://www.scylladb.com/2017/02/13/efficient-full-table-scans-with-scylla-1-6/>
>>> sending queries in parallel and using the token
>>>
>>> *SELECT DISTINCT id FROM my_table WHERE token(id) >= -9204925292781066255
>>> AND token(id) <= -9223372036854775808; *
>>>
>>> *or I can just maintain another table with the unique keys *
>>>
>>> *CREATE TABLE id_only ( id text,
>>>
>>> PRIMARY KEY (id) )*
>>>
>>> but I tend not to since it is error prone and will enforce other procedures
>>> to maintain data integrity between those two tables .
>>>
>>> any ideas ?
>>>
>>> Thanks
>>>
>>> Avi
>>>
>>>
>
--
*Christophe Schmitz*
*Director of consulting EMEA*
Hi Nathan,
The code may occasionally write to the same row multiple times.
>
>
Can you run a test using IF NOT EXISTS in your inserts to see if that makes
a difference? That shouldn't make a difference, but I don't see what the
problem might be at the moment.
--
*Ch
hold)*
>
> How it can happen? I have several SASI indexes for this table, can this be
> a reason?
>
> Regards, Vlad
>
--
*Christophe Schmitz*
*Director of consulting EMEA*AU: +61 4 03751980 / FR: +33 7 82022899
<https://www.instaclustr.com>
<https://www.facebook.com
Hi there,
I am running a 6 node cluster on 2.1.7 with a table using DTCS to store
time series data, for up to 12 hours (using ttl of 12h). Data are written
as they arrive, without any update or active delete.
During the first 12h, the cluster gets filled with data. And a bit later,
the amount of d
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