topic [resolved] Import tables from postgresql to cassandra in Talend Studio

[resolved] Import tables from postgresql to cassandra

Anonymous — Sat, 16 Nov 2024 10:39:14 GMT

Hello,
I have some problem when i try to exporting postgresql tables to cassandra database.
when i try to do it i have a "Exception in component tCassandraOutput_1 java.lang.NullPointerException" and i don't get it

i use talend open studio big data 6.2, postgresql 9.4, and cassandra 3.5
i'm using an existing connection and i use tLibraryLoad on tCassandraConnection to resolve a slf4j driver problem
i can tLogRow the output of the postgresql if i disable all cassandra's elements so the problem come from them.
this is a bug or a driver problem? or am i missing something?
thank you for your time.

Re: [resolved] Import tables from postgresql to cassandra

Anonymous — Thu, 05 May 2016 09:42:47 GMT

Hi,
For external jar, have you already checked documents about: TalendHelpCenter:Identify required external modules and TalendHelpCenter:Install external modules?
In addition, there is no any connector(OnsubJobOk or OnComponentOk) between your tCassandraConnection and tCassandraOutput which could cause the java.lang.NullPointerException in your work flow.
Best regards
Sabrina

Re: [resolved] Import tables from postgresql to cassandra

Anonymous — Mon, 09 May 2016 09:00:48 GMT

i solved my problem by downgrading my cassandra to 2.1.x, its work fine now, no more problem.

Re: [resolved] Import tables from postgresql to cassandra

Anonymous — Mon, 09 May 2016 10:43:05 GMT

Hi,
Thanks for your feedback. Could you please mark this topic as resolved?
Best regards
Sabrina