I've been using the
_reindex endpoint for some time now, about 2 months, without any problems.
I'm running ES 8.6.2 on port 9500. The OS is W10.
For some reason, as of this morning, any attempts to reindex are just not ending. The indices in question are about 20 MB or so: I've let the operation run on for as much as 3 minutes. I've tried running the command from the program (Python) but also from Insomnia.
I've also checked that the index I'm trying to reindex definitely does exist. I've also restarted the ES server. Other ES server commands appear to be working fine.
I've tried rebooting.
I notice that when I cancel the operation after many seconds, and then go
GET _cat/indices I now see the new index which I was attempting to create with status "red" and apparently no documents (or stated size).
Any suggestions about what might be causing this?