How to update a elasticsearch cluster to new version when some field is not stored

As the document said: If you have indices created in 5.x or before, you must reindex or delete them before upgrading to 7.6.2.

I have indices when some field have excluded from "_source" because these field are just index for datas outside the es cluster。 When updating, is these any thing I can do to just updating these indices in place but not reading data from outside database and rebuilding these indices?

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.