Hi Igniters, Ignite-indexing module has outdated dependency to apache-lucene-3.5.0, however, actual version of lucene for now is 6.5.1. Here is a ticket [1].
Store format version of 3.x is deprecated in 4.x and does not supported at all in higher versions, that cause difficulties to integrate with ignite on user side. Apache Lucene 6.x seems doen't support <=4.x index format, but 5.x index format can be used via additional jar with old codecs. Also, I've found GridLuceneIndex stores index in offheap via old approach and page memory is not supported, so it can't be persisted (looking forward to PDS). Seems, we will not break any compatibility if we upgrade lucene version in 2.1, until (or together with) Ignite full-text-search component supports page memory and PDS merged to ignite. I think we should upgrade to latest 6.x version, as it will much harder to do it later. Is there any cons\pros to upgrade lucene dependency up to latest 6.x version? [1] https://issues.apache.org/jira/browse/IGNITE-3562 -- Best regards, Andrey V. Mashenkov
