trying to retrieve a side (http://feeds.reuters.com/reuters/businessNews) via the HttpRetriever fails and the following message is shown:
WARN HttpRetriever 2:11 Error retrieving http://feeds.reuters.com/reuters/businessNews: Exception java.net.UnknownHostException: feeds.reuters.com for URL "http://feeds.reuters.com/reuters/businessNews": feeds.reuters.com
You can easily reproduce this error on KNIME 2.12.2 (I have OS Win7 ) with the following WF:
'Table Creator -> HttpRetriever' - using the link http://feeds.reuters.com/reuters/businessNews as the only cell in the Table Creator node
Executing this WF under KNIME 2.12.2 results in the above WARN - Error and no result is fetched (the 'Result' column is empty '?')
But executing this WF under KNIME 2.11.3 works fine - no WARN and the Result is fetched!!!
unfortunately I have no Windows machine at hand for testing, however running your workflow with your provided URL in KNIME 2.12.2 on OS X works fine for me.
Do other URLs work? Are you within a company network which requires specific proxy configuration?
yes I encountered the problem described on a company machine, using some proxy settings. But I performed my tests (as described) on the same machine - with both KNIME versions (even running them in parallel)!
Furthermore I reproduced my findings on another (company) PC, starting with 2.11.3 (everything fine) and than upgrading to 2.12.2 - with the result described!
Missing/wrong proxy configs was one of my first thoughts, but I have not found some new/additional/etc. settings for Paladin nodes in 2.12.2 - have I missed something?
Palladian's proxy configuration is picked from the Eclipse/KNIME configuration, and we haven't changed anything within Palladian recently (at least knowingly ;-) ). Have you checked, whether your settings in Preferences -> General -> Network Connections are identical on the working/non-working KNIME instance?
If that does not help, it would be very helpful if you could attach a DEBUG log output when running the workflow with the HttpRetriever (enable DEBUG level in Preferences -> KNIME -> KNIME GUI). It should give some output about the proxy config. used.
There was a regression concerning proxy handling in recent versions. It should be fixed with today's update. Let me know if it works for you.
yes, with the update it works - with 2.12 and 3.1.