gianm commented on issue #9314: Add HashVectorGrouper based on MemoryOpenHashTable. URL: https://github.com/apache/druid/pull/9314#issuecomment-583122340 I just looked at it. It's complaining that `keySpace.getInt(i * Integer.BYTES)` accepts a long and in theory `i * Integer.BYTES` could overflow. It's not very plausible: it would only happen if the vector size was crazy huge. I added a check to the start of the method that will detect this and block it. I'm not sure if LGTM will be smart enough to understand it, but it means the issue isn't real.
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