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Werk #2229: Do not fail on non-existing Livestatus columns any longer, output None or null instead

Component Livestatus
Title Do not fail on non-existing Livestatus columns any longer, output None or null instead
Date May 18, 2015
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 1.2.7i1
Level Trivial Change
Class New Feature
Compatibility Compatible - no manual interaction needed

When you ask for a column that does not exist in your Livestatus version, now this is not considered as a fatal error any longer but just being logged as a warning. Instead an empty string (CSV), None (Python) or null (JSON) is being returned. This makes it easier for GUIs to maintain compatibility with existing Livestatus version when new features are implemented that make use of new Livestatus columns.

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