How to write into PostgreSQL hstore using Spark Dataset

Question

I\'m trying to write a Spark Dataset into an existent postgresql table (can\'t change the table metadata like column types). One of the columns of this table is of type HSto

Answer 1

It turns out I have just to let postgres try to guess the appropriate type of my column. By setting stringtype to unspecified in the connection string as described in the official documentation.

props.put("stringtype", "unspecified")

Now it works perfectly !!