Potential Fix for Indexes stuck in `INSTALLED` state


David Pitera <piter...@...>
 

Hey guys, I know there have been a bunch of questions lately about indexes getting stuck in the `installed` state, and I recently discovered some more interesting potential causes for the problem; please see #5 in my StackOverflow answer here: https://stackoverflow.com/questions/40585417/titan-db-ignoring-index/40591478#40591478

TLDR; you might have phantom JanusGraph nodes that are unable to acknowledge index existence, and thus the index will never move to `REGISTERED`. You may also have issues with backfilling of the queue, but I would definitely expect the former first.

Good luck!

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