They are are actually two different things. parent is to identify parents for parent-child relationships. routing is to tell ES to shortcut the search/indexing only to a specific shard.
It's interesting that the second call works (it must have been implemented for convenience) but in general if you're indexing or searching, I'd use routing. If you are indexing a child document, then use parent to point to its parent document. -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/a4a8ffa3-25f1-4cb2-8166-23c46e41be04%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
