mikemccand commented on PR #13874:
URL: https://github.com/apache/lucene/pull/13874#issuecomment-2402452969
> if u merge in `branch_9_12`, then
`dev-tools/scripts/addBackcompatIndexes.py 9.12.0` should be able to generate
the compat indices.
Hmm the problem is, we need to regen the 9.12.0 `int8_hnsw` back compat
index using the bug fix from this PR (so that it actually has `int7` quantized
vectors, not unquantized `float32`)? So I think I must manually (carefully) do
this? I would also like to add a test case that confirms that the `int8_hnsw`
zip file indices do in fact use the quantized codec format ("who tests the
tester?") ... but that can come later ... I'll open another spinoff.
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