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Store known span tags densely in TagMap by tag-id (phase 2) - #11814

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dougqh wants to merge 10 commits into

dougqh/tagsetfrom

dougqh/dense-store

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Store known span tags densely in TagMap by tag-id (phase 2)#11814
dougqh wants to merge 10 commits into
dougqh/tagsetfrom
dougqh/dense-store

Commits on Jul 16, 2026
- Fold OptimizedTagMap into a final class TagMap (drop the interface)
  
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  4873780
- Drop EmptyHolder, make factories final, simplify test-helper instanceof
  
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  5bb0fee
- Restore null-contract annotations lost when folding away the interface
  
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  8ee8c28
- Mark fromMap/fromMapImmutable map param @Nonnull
  
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  0737ca6
Commits on Jul 20, 2026
- Add TagMap read-through support (level-split phase 1 mechanism)
  
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  b58bcc0
- Wire mergedTracerTags as a read-through parent at span build (level-split phase 1)
  
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  1f257aa
- Add StringIndex: a generic open-addressed string set
  
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- Cover StringIndex instance long[] API + Support.numSlots for coverage gate
  
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  fc89423
- Align StringIndex with the flat-collection family: EmbeddingSupport + capacityFor
  
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  f3c4c21
- Store known span tags densely in TagMap by tag-id
  
  dougqh
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  0c0d740