"Error rendering meta data"

hagen85hagen85 Member Posts: 18 Contributor II
edited June 2019 in Help
Hi there,

I am trying to use the stream database node to import data from MySQL via JDBC, but unfortunately I get an error saying "Error rendering meta data" in the results tab. However in the data tab it seems like the import went well.

Thats the corresponding log entry:AM WARNING: Error creating renderer: java.lang.RuntimeException: Cannot retrieve data from database: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.

Thanks in advance for your ideas.
Best regards


  • Options
    hagen85hagen85 Member Posts: 18 Contributor II
    Hi there

    Seems that this is not a rapid miner issue, because it works fine if I reduce the number of rows in the table to a value such as 100.  Any ideas?

    Best regards
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