Hi

I just tried to test the OpenAI model "text-similarity-davinci-001" with 12288 dimensions and receive the following error

java.lang.IllegalArgumentException: vector numDimensions must be <= VectorValues.MAX_DIMENSIONS (=1024); got 12288         at org.apache.lucene.document.FieldType.setVectorDimensionsAndSimilarityFunction(FieldType.java:381) ~[lucene-core-9.0.0.jar:9.0.0 0b18b3b965cedaf5eb129aa41243a44c83ca826d - jpountz - 2021-12-01 14:23:49]         at org.apache.lucene.document.KnnVectorField.createFieldType(KnnVectorField.java:69) ~[lucene-core-9.0.0.jar:9.0.0 0b18b3b965cedaf5eb129aa41243a44c83ca826d - jpountz - 2021-12-01 14:23:49]

IIUC I can not increase programmatically the max vector size which is set inside lucene/core/src/java/org/apache/lucene/index/VectorValues.java

  public static int MAX_DIMENSIONS = 1024;

right?

I guess I could rebuild Lucene with a greater size or what are the possbilities to increase the max vector size?

Thanks

Michael

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