Hi. One of the biggest issues with text queries is a lack of support for lucene indices persistence, which makes this functionality useless if a persistence is enabled.
I would first take care of it. пн, 21 июн. 2021 г. в 12:16, Maksim Timonin <timonin.ma...@gmail.com>: > Hi, Atri! > > You're right, Actually there is a lack of support for TextQueries. For the > last ticket I'm doing I see some obvious issues with them (no page size > support, for example). I'm glad that somebody wants to maintain this > functionality. Thanks a lot! > > For the MergeSort algorithm there is already a patch for that [1]. It's > currently on review. This patch introduces an abstract reducer for > CacheQueries with 2 implementations (unordered, merge-sort). Then TextQuery > leverages on MergeSort to order results from multiple nodes by score. This > patch also fixes the pageSize issue, I've mentioned before. Could you > please check if it fully matches your idea? Any issues or comments are > welcome. > > I've prepared this ticket, because I need the MergeSort algorithm for the > new type of queries I'm implementing (IndexQuery, it should also provide > ordered results over multiple nodes). Currently I'm not planning to go > further with TextQuery, so if you're going to support this it'll be a great > contribution, I think. > > [1] https://issues.apache.org/jira/browse/IGNITE-14703 > [2] https://github.com/apache/ignite/pull/9081 > > > On Mon, Jun 21, 2021 at 11:11 AM Atri Sharma <a...@apache.org> wrote: > > > Hi All, > > > > I have been looking into our text queries support and see that it has > > limited community support. > > > > Therefore, I volunteer to be the maintainer of the module and work on > > enhancing it further. > > > > First goal would be to move to Lucene 8.x, then work on sorted reduce > > - merge across nodes. Fundamentally, this is doable since Lucene ranks > > documents according to their score, and documents are returned in the > > order of their score. Since the scoring function is homogeneous, this > > means that across nodes, we can compare scores and merge sort. > > > > Please let me know if I can take this up. > > > > Atri > > > > -- > > Regards, > > > > Atri > > Apache Concerted > > > -- Best regards, Alexei Scherbakov
