Boosting Transform Speed

MLeap’s performance with transforming leap frames is good out of thebox, but sometimes there are situations where even more speed is needed.Luckily, we have a row-based transformer that eliminates a lot ofoverhead in transforming leap frames. The overhead that is beingeliminated is transforming the schema of the leap frame on every call totransform. How is this done?

1. Calculate the input/output schema of a leap frame before any calls totransform
2. When we transform a row, preallocate enough space to store allrequired results
3. Fill the preallocated space with results from our transformers andreturn the transformed row

A lot of time is spent in transforming the schema relative to actuallyprocessing your data, so this can be a huge speed increase in certaincases.