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Adjacency_matrix aggregation memory usage optimisation. #46257

Merged
merged 1 commit into from
Sep 4, 2019
Merged

Adjacency_matrix aggregation memory usage optimisation. #46257

merged 1 commit into from
Sep 4, 2019

Commits on Sep 4, 2019

  1. Adjacency_matrix aggregation optimisation. 

    Avoid pre-allocating ((N * N) - N) / 2 “BitsIntersector” objects given N filters.
Most adjacency matrices will be sparse and we typically don’t need to allocate all of these objects - can save a lot of allocations when the number of filters is high.
As a consequence we could consider increasing the default for the `index.max_adjacency_matrix_filters`  setting?

Closes elastic#46212
    @markharwood
    markharwood committed Sep 4, 2019
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