How to register cassandra custom codecs in spark? (https://github.com/datastax/spark-cassandra-connector/issues/1173)

[Revanth Reddy]

Hi Team ,

I want to write a custom cassandra codec and i want to use that codec in my
spark application while reading the data from cassandra table .

Basically the custom codecs are used to convert one column type to another
while reading from cassandra. for example i have a timestamp column in
cassandra table ,but i want to read it as long and save as parquet file to
HDFS , then this cutom codecs will be usefull instead of doing an
additional transformation in the spark code.

I want to know how to set/register this custom cassandra codecs in spark ?

 I had tried with solution provided in the below link but it does not work
, any ideas around this will be helpfull.

https://stackoverflow.com/questions/40363611/adding-custom-codec-to-cassandraconnector/49750791?noredirect=1#comment86515847_49750791




*Thanks & Regards*
*S.Revanth kumar reddy*
https://github.com/Re1tReddy/
http://34.230.100.5:8080/crazyusers/login

Re: Cassandra datastax cerrification

[Jonathan Haddad]

The original question was about prepping. I think that might be a question
best suited for datastax, since you’re paying them for the cert.
On Sat, Apr 14, 2018 at 9:02 AM Ben Bromhead  wrote:

> Certification is only as good as the organizations that recognize it.
> Identify what you want to get out of certification, whether that
> certificate will get what you want and make a decision based on that. The
> delivered content can be the best in the world, but if no one recognizes it
> then the certification element becomes meaningless.
>
> I would be asking any certification provider which companies actually
> accept it or recognize it as a demonstration of skill. Especially if you
> are going to pay money for it.
>
> On the other hand if you are just looking to build knowledge / get some
> classroom experience then you can look at the various options with a more
> subjective approach.
>
> This is just my 2c based on a past life in the IT Security world where
> "certifications" are a massive business and acceptance of certifications
> can vary place to place and not a commentary on any of the certification
> providers you directly mentioned :)
>
>
> On Sat, Apr 14, 2018 at 11:09 AM Abdul Patel  wrote:
>
>> Hi All,
>>
>> I am preparing for cassandra certification(dba) orielly has stopped the
>> cassandra cerrification so the best bet is datastax now ..as per my
>> knwledge ds201 and 220 should be enough for cerrification and also i am
>> reading definitive guide on cassandra ..any other material required ? Any
>> practise test websites? As certification is costly and wanna clear in one
>> go ...
>>
> --
> Ben Bromhead
> CTO | Instaclustr 
> +1 650 284 9692
> Reliability at Scale
> Cassandra, Spark, Elasticsearch on AWS, Azure, GCP and Softlayer
>

Re: Cassandra datastax cerrification

[Ben Bromhead]

Certification is only as good as the organizations that recognize it.
Identify what you want to get out of certification, whether that
certificate will get what you want and make a decision based on that. The
delivered content can be the best in the world, but if no one recognizes it
then the certification element becomes meaningless.

I would be asking any certification provider which companies actually
accept it or recognize it as a demonstration of skill. Especially if you
are going to pay money for it.

On the other hand if you are just looking to build knowledge / get some
classroom experience then you can look at the various options with a more
subjective approach.

This is just my 2c based on a past life in the IT Security world where
"certifications" are a massive business and acceptance of certifications
can vary place to place and not a commentary on any of the certification
providers you directly mentioned :)

On Sat, Apr 14, 2018 at 11:09 AM Abdul Patel  wrote:

> Hi All,
>
> I am preparing for cassandra certification(dba) orielly has stopped the
> cassandra cerrification so the best bet is datastax now ..as per my
> knwledge ds201 and 220 should be enough for cerrification and also i am
> reading definitive guide on cassandra ..any other material required ? Any
> practise test websites? As certification is costly and wanna clear in one
> go ...
>
-- 
Ben Bromhead
CTO | Instaclustr 
+1 650 284 9692
Reliability at Scale
Cassandra, Spark, Elasticsearch on AWS, Azure, GCP and Softlayer

Re: Cassandra datastax cerrification

[Rahul Singh]

It’s good for a certification... there was a discussion in this list two weeks 
ago on the same subject. Summary:

1. Yes it’s fine.
2. You need experience or talent to get hired.
3. Talent can be either proven experience or your activity on the Cassandra 
project.

--
Rahul Singh
rahul.si...@anant.us

Anant Corporation

On Apr 14, 2018, 11:09 AM -0400, Abdul Patel , wrote:
> Hi All,
>
> I am preparing for cassandra certification(dba) orielly has stopped the 
> cassandra cerrification so the best bet is datastax now ..as per my knwledge 
> ds201 and 220 should be enough for cerrification and also i am reading 
> definitive guide on cassandra ..any other material required ? Any practise 
> test websites? As certification is costly and wanna clear in one go ...

Cassandra datastax cerrification

[Abdul Patel]

Hi All,

I am preparing for cassandra certification(dba) orielly has stopped the
cassandra cerrification so the best bet is datastax now ..as per my
knwledge ds201 and 220 should be enough for cerrification and also i am
reading definitive guide on cassandra ..any other material required ? Any
practise test websites? As certification is costly and wanna clear in one
go ...