I'm using KNIME for some time - and I really love it.But now I encountered a problem with the 'Document Vector' node in workflows, which performed well in the past.
I'm using version 2.11.0 on Windows 7 and created a demo WF consisting of 4 nodes: 'Table Creator -> Strings To Document -> 'Keygraph keyword extractor' -> 'Document Vector'. In 'Table Craetor' only one string ('AAA BBB CCC') was placed in 'column1'. All settings/configurations of the nodes were left unchanged (defaults).
Running this sample (after creation or restart of KNIME) works fine, but resetting 'Document Vecor' (or another node) and executing again results in : ERROR Document vector Execute failed: Error while writing to buffer, failed to write to file "knime_container_20150111_6183533940375088623.bin.gz": Failed copying file stores to local handler.
Looking into the KNIME.LOG I find: ..... Caused by: java.io.FileNotFoundException: C:\Users\erich\AppData\Local\Temp\knime_Workflow Manage91561\knime_fs-Document_vector_2_2-91564\000\000\7873b690-2b22-436b-a66b-f1f9f4b3297f (Das System kann den angegebenen Pfad nicht finden) .....
I can re-execute the sample either by (i) restarting knime or by (ii) creating a new 'Document Vector' node.
So it seems to my, that the problem is related to a multiple execution of a 'Document Vector' node instance - BUT ONLY in version 2.11.0 of KNIME. The WF above works fine with 2.10.4!
Any idea what is causing this problem?