Hello! I think that number one is the most important one, then maybe it will see more use and other deficiencies become more apparent, leading to more tickets and visibility.
Maybe 2. and 3. will even use a different approach when persistence is implemented. Regards, -- Ilya Kasnacheev пн, 28 июн. 2021 г. в 14:34, Atri Sharma <a...@apache.org>: > Hello Again! > > I have been looking into the aforementioned and here are my follow up > thoughts: > > 1. Support persistence of Lucene indexes. > 2. https://issues.apache.org/jira/browse/IGNITE-12401 (Needs fixing of > moving partitions first) > 3. Figure out how to return scores from nodes and use them as sort > parameters on the coordinator node > (https://issues.apache.org/jira/browse/IGNITE-12291) > > Please let me know if this looks ok to make text queries functional? > > Atri > > On Mon, Jun 21, 2021 at 2:49 PM Alexei Scherbakov > <alexey.scherbak...@gmail.com> wrote: > > > > 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 > > -- > Regards, > > Atri > Apache Concerted >
