mkhludnev opened a new pull request, #1233:
URL: https://github.com/apache/solr/pull/1233
The way how distributed MLT works now lacks of perfection, you know.
Here's not a real proposal, it just demonstrates current state.
1. MLT respond with Query instance. However, it might be list of terms, or
so. I keep it as-is
2. These queries should be responded to query coordinator. In HEAD it's just
`BoolQ.toString()` that's a pity. There are two options instead: Lucene query
can be structured as named list, or as a blob. I started from the former
approach, but then decided to dump it to blob with Jackson+Smile. So, in the
patch MLT query successfully arrives to coordinator.
3. Then, we need to spread it across shards. And now it's prototyped in a
little bit weird way. Since, it's deadly hard to send shard request with
payload in body, I have to encode it to base64 and hook it up by dedicated
QParser. Yeah...
So, where to tweak it further?
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