Not re-indexing properly

[UrielKugelmass]

Hi,

When I try to re-index some indices I get:
Starting reindex in 1 shards.
Reindexing completed sucessfully.

But nothing really happens... I could reindex some of my indices (but I used the aliases instead of the indices).

I noticed that this happens with big indices... It does work with smaller ones but I am specifically trying to reindex one index that is 4.51GB and it is failing. Any solution?

Thanks,
Uriel

[filipealc]

I recently used the re-index on a 50gb index with 60KK documents +-. What was a problem is that the connection timeout sometimes in the middle of the index, so, what we did was write a custom query that would get the data partially and execute the re-index X times until all the data is migrated. But your problem seems a little different, from what I read on the code the re-index uses scan/scroll to get the data from the index, so a question here would be "Are you able to scan/scroll this index or he has some specific configuration that don't allow it?"