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Turns out the cause of problem was using select * in database join instead of only relevant columns like username. When using only relevant columns, error goes away. And, no there was not last_login column inside the database join table, but still not that someone will believe me :D

I will attach transformation, but to sum up, it is supposed to insert jpg files inside BLOB column in mysql database. The other transformation with exact same java script code is working fine, this one gives me following error:   Unexpected error last_login Timestamp : We cant convert data type Timestamp ...

Seems that remote endpoint is the cause for slow speeds I am getting - I think because I even tried to query using curl and speed was the same, around 5 requests per second on average.

I am using rest client to fetch data from api. Have to do thousands of requests, but using rest client results in poor performance (3-5 queries in a second) due to client not being persistent, but opening connection on every request.  What can be done other than using multiple rest client in parallel?  ...

Hi, thanks for response. Will try but on github they mention skipping tests is not recommended, thats why I didnt skip them.

This content was either too long or contained formatting that did not work with our migration. A PDF document is attached that contains the original representation   I have problems building pentaho-kettle from github, either by cloning or using latest release, build always fails:ERROR] Failures: [ERROR] ...