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Optimized partition metadata lookup #4443

Merged
merged 2 commits into from
May 9, 2022
Merged

Optimized partition metadata lookup #4443

merged 2 commits into from
May 9, 2022

Commits on May 5, 2022

  1. c/topics_table: optimized per partition metadata lookup 

    Optimized per partition metadata lookup by storing partition metadata in
`absl::btree_set` the set provides fast lookup while keeping partitions
ordered. Limited number of times partition metadata are copied by
returning metadata object stored directly in a map.

Signed-off-by: Michal Maslanka <michal@vectorized.io>
    @mmaslankaprv
    mmaslankaprv committed May 5, 2022
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  2. c/topic_table: introduced method returning reference to topic metadata 

    Introduced method returning reference to topic metadata. The reference
returning method allow us to avoid copying metadata object when it has
to be accessed by synchronous parts of code.

Important:
Remember not to use the reference when its lifetime has to
span across multiple scheduling point. Reference returning method is
provided not to copy metadata object when used by synchronous parts of
code

Signed-off-by: Michal Maslanka <michal@vectorized.io>
    @mmaslankaprv
    mmaslankaprv committed May 5, 2022
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