Reading the description for indexPattern:fieldMapping:lookBack:
For index patterns containing timestamps in their names, look for this many recent matching patterns from which to query the field mapping
I would expect that when setting up or refreshing an Index Pattern in Kibana, it would only consider the mapping of the last 5 indices. However that is not what is happening. It is definitely looking back at mappings of older indices as well.
Hi Robert, the default value for this setting is 5, so I think your assumptions are correct. This may be a bug, but it could also be that your indices have incorrectly formatted timestamps in their names.
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