[ https://issues.apache.org/jira/browse/LUCENE-10394 ]
Gautam Worah deleted comment on LUCENE-10394:
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was (Author: gworah):
I'll try to work on this soon. Looking into the ByteBuffer API in the meantime.
> Explore moving ByteBuffer(sData|Index)Input to absolute bulk gets
> -----------------------------------------------------------------
>
> Key: LUCENE-10394
> URL: https://issues.apache.org/jira/browse/LUCENE-10394
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Adrien Grand
> Priority: Minor
>
> With the move to Java 17, we now have access to absolute bulk gets on
> ByteBuffers:
> https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/nio/ByteBuffer.html#get(int,byte%5B%5D,int,int).
> We should look into whether this helps with our more random-access workloads
> like binary doc values, conjunctive queries and building HNSW graphs.
> ByteBuffersDataInput already tries to access the underlying buffers in a
> random-access fashion and works around the lack of absolute bulk gets by
> doing {{ByteBuffer#duplicate()}}. It looks like a low hanging fruit to stop
> duplicating the buffer and just do an absolute bulk get instead.
> ByteBuffersIndexInput would require a bit more work since it's performing
> relative reads whenever possible.
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