apache
MSQ: Use frames to back broadcast joinables.
In BroadcastJoinSegmentMapFnProcessor, use FrameBasedInlineDataSource and FrameBasedIndexedTable to back broadcast joinables, rather than a regular InlineDataSource (which would use Java object arrays).
Reduces memory usage and eliminates a copy while building the joinable.
AFAIR https://github.com/apache/druid/pull/14999 worked fine with the frame-based broadcast table and didn't have any performance degradation when compared with using columnar frames.
@LakshSingla are you suggesting that in this patch I should use row-based frames rather than columnar?
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