We are using Knime Server Version 4.9.1 and having a strange comportment on a part of our workflow - a metanode which do a list file and then loop on the list to read all files:
Our workflow fails with the error on this metanode :
Execute failed: Must specify non-null table spec and file reader settings for file table.
(and sometime it fails with read time out)
But when I connect to the server from Knime Analytic platform, reset the metanode and restart it, all works well.
The metanode as a workflow apart, however, works well without any error.
I do some test and come up with a “conclusion” like this : I have File Reader that takes a little bit long time to execute, in the mean time, the metanode is executed and it can not do the job. I joint here the example workflow that demonstrate the error.
Test_List_File.knwf (18.8 KB)
Can someone please tell me that how can I resolve this problem please ?
Thanks in advanced,