leventov commented on issue #4422: Agile, config-less approach to off-heap memory management URL: https://github.com/apache/incubator-druid/issues/4422#issuecomment-522494454 BTW there is a relatively simple (though hacky) workaround of ByteBuffer's 2GB limitation without implementing #3892 in full: we can manage a single continuous block of off-heap memory as `Memory` object and convert slices of it to `ByteBuffer` for further use in Druid's core query processing logic using the [`unsafeByteBufferView()`](https://datasketches.github.io/api/memory/snapshot/apidocs/org/apache/datasketches/memory/Memory.html#unsafeByteBufferView-long-int-) method.
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