Free memory free#
The object supplied at the first through input port of the Free Memory operator is available at the first through output port. When one input is connected, another through input port becomes available which is ready to accept another input (if any). Any object connected at this port is delivered without any modifications to the output port. It is not compulsory to connect any object with this port. So the memory usage will constantly grow with the time until it has reached a peak value and RapidMiner starts to discard previous results. RapidMiner will automatically discard all these Results if a currently running process or new result needs free memory.
This operator will only free memory which is no longer needed which is not the case if the object is in the Store.Īfter process execution has been completed, everything including the Stores is freed, but only if needed! So you can take a look at your previous results in the Result History as long as they fit into the memory. The Free Memory operator does not clean up the store. Also note that operators like the Remember operator put the objects in the Store. The Free Memory operator can be useful if you get the OutOfMemoryException. So if there is any memory left, RapidMiner will not discard previous results of the process or data at the port. Please note that RapidMiner keeps data sets in memory as long as possible. Internally, this operator simply invokes a garbage collection from the underlying Java programming language. It can be very useful after the data set was materialized in memory. It might be very useful in combination with the Materialize Data operator after large preprocessing trees using a lot of views or data copies. The Free Memory operator cleans up unused memory resources. It might be useful after large preprocessing chains with a lot of currently unused views or even data copies. SynopsisThis operator frees unused memory.
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