Support "ignore_unmapped":true for script based sorting on unmapped fields

[dannymcpherson]

...Or perhaps make ignore_unmapped true by default only for script based sorting.

[tom-martin]

+1 on this. Anyone aware of any workarounds in the meantime?

[tom-martin]

Testing doc.containsKey("whatevs") works :)

[ethier]

+1 on this. I'm getting the following when specifying ignore_unmapped true on sorts for indices without one or all or the sort mappings. This is on 0.90.0 too.

ReduceSearchPhaseException[Failed to execute phase [query], [reduce] ]; nested: ArrayIndexOutOfBoundsException[1]

[clintongormley]

Thinking about this issue again, it seems to me that the best way to handle missing values in these cases is with doc.containsKey(), as suggested by @tom-martin. You're already inside a script, which allows you to make whatever decision you want in order to handle the missing-value case. Just adding (the now deprecated) ignore_unmapped parameter (see #7039) to this seems like a blunt instrument.

Closing this ticket.