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Kettle Vertica bulk loader
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This is a plugin for performing bulk data loads into a Vertica Analytic Database using a COPY FROM STDIN statement through JDBC TODO/LIMITATIONS: No data escaping - If there is a \. the load will silently be truncated. If a field contains the delimiter or record terminator, that record will be rejected. The step should probably be enhanced with a few more options to enable checking/escaping. Efficiency of InputStream implementation - I'm currently using a Piped Input/Output Stream pair with a worker thread to hand the data off to the JDBC driver. I will evaluate whether it would be better to instead create a custom InputStream implementation that can be fed directly. (I'm guessing "yes!") Speed - On a dual quad xeon with a GB connection to the cluster, I'm averaging about 40k to 50k records per second for a single load stream. I think this could improve. Error row handling - The step doesn't have any way to be notified of rejected records if it is not set to abort. If it could receive notification of rejected records, we could even enable error handling on the step and allow the ETL developer to perform additional processing on those failed records. Statement canceling - If the transformation aborts, the step receives an exception from the JDBC driver when attempting to cancel the statement. It currently has to use stack trace parsing to determine if it should report this error or not, and Vertica logs some errors that I'd rather avoid seeing. Need a better way to cancel an in-process stream. Update to Vertica 4.0 and 5.0 - Most important is utilizing the new bulk loading features in those versions. TEST PLAN: Small/Medium/Large data loads Different delimiter characters including ' as a special case Different null strings and record terminator strings including ones with the character ' as a special case Abort vs non-abort Direct vs non-direct Specifying different types of logging filenames Multiple load step copies on one machine Clustered load streams Clustered load streams with multiple step copies per machine Special character encodings?