abhioncbr commented on code in PR #12866:
URL: https://github.com/apache/pinot/pull/12866#discussion_r1559767788
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/segment/creator/impl/vector/lucene95/HnswVectorsFormat.java:
##########
@@ -19,10 +19,10 @@
package org.apache.pinot.segment.local.segment.creator.impl.vector.lucene95;
import java.io.IOException;
+import org.apache.lucene.backward_codecs.lucene95.Lucene95HnswVectorsFormat;
Review Comment:
@xiangfu0 / @Jackie-Jiang, this codec can not be used to write data since
now it's in `backward_codec` package. unit test
`LoaderTest.testVectorIndexLoad:766->constructSegmentWithVectorIndex:928` is
failing with the following exception
```bash
Caused by: java.lang.UnsupportedOperationException: Old codecs may only be
used for reading
at
org.apache.lucene.backward_codecs.lucene95.Lucene95HnswVectorsFormat.fieldsWriter(Lucene95HnswVectorsFormat.java:182)
```
based on the
[conversation](https://lists.apache.org/thread/fl9ds5ofxgmq2obzh0j5hgsmp4n6jx65),
I found, is it okay if I use lucene99 based codecs.
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