ES server is not detecting the indexes

I have manually copied an index from an external cluster . when I restarted
the elasticsearch server it says indices recovered. But it is not showing
any indices in the cluster.

jajoria abhishek wrote:

I have manually copied an index from an external cluster . when I
restarted the elasticsearch server it says indices recovered. But
it is not showing any indices in the cluster.

What versions of ES are you running on both clusters? You'll need at
least 0.19.8 on both.

Support for doing this type of migration was only recently added. If
you have an older index it won't have the necessary state information
contained in the index file structure.

Auto import dangling indices · Issue #2067 · elastic/elasticsearch · GitHub

-Drew