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3bc177e69d
* fix #1151 Fixes a off by one error in the stats for the index fast field in the multi value fast field. When retrieving the data range for a docid, `get(doc)..get(docid+1)` is requested. On creation the num_vals statistic was set to doc instead of docid + 1. In the multivaluelinearinterpol fast field the last value was therefore not serialized (and would return 0 instead in most cases). So the last document get(lastdoc)..get(lastdoc + 1) would return the invalid range `value..0`. This PR adds a proptest to cover this scenario. A combination of a large number values, since multilinear interpolation is only active for more than 5_000 values, and a merge is required.