I’m using some nodes from the OpenMS project that can take multiple files as input (which themselves are the product of running analysis on other files). When dealing with a large number of files I used to bring several groups of files together with sequential FileMerger nodes. However now I am no longer able to do this; specifically if I take the product of two FileMerger nodes and then try to merge them with another FileMerger node, the error
Execute failed: (“ArrayIndexOutOfBoundsException”): -1
is returned in the KNIME console and the node goes to red. This is a process I used to be able to do, but now I keep running into this error. I’m not sure where to start troubleshooting this.
thank you
Hi!
Firstly I can confirm your problem when you start from simple URIFilePorts that are not managed by FileStores (like from all the Input File(s) nodes) and a fix is underway.
Since nothing changed in that node for a long time, I am not sure if this is a regression though. Maybe you were able to do it with intermediate results?
A temporary workaround could be to artificially add a FileStore for input files by passing them through:
Port to File Cells -> File Cells to Port. Unfortunately I think this will copy the data to the temporary location of the file store though.
Cheers,
julianus
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