reloadDocValuesFormats

Reloads the DocValues format list from the given ClassLoader. Changes to the docvalues formats are visible after the method ends, all iterators (.availableDocValuesFormats,...) stay consistent.

NOTE: Only new docvalues formats are added, existing ones are never removed or replaced.

This method is expensive and should only be called for discovery of new docvalues formats on the given classpath/classloader!