Michael Dürig resolved OAK-4797.
       Resolution: Won't Fix
    Fix Version/s:     (was: Segment Tar 0.0.16)

Won't fix as per my last comment

> Optimise stable ids 
> --------------------
>                 Key: OAK-4797
>                 URL: https://issues.apache.org/jira/browse/OAK-4797
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: memory, performance
> Currently {{SegmentNodeState#getStableId()}} returns a string with all its 
> associated overhead:
> * high memory requirements (42 characters plus the overhead of a {{String}} 
> instance. The raw requirements are a mere 20 bytes (long msb, long lsb, int 
> offset). The memory overhead is problematic as the stable id is used as key 
> in the node deduplication cache (See OAK-4635).
> * high serialisation cost. I have seen {{getStableId()}} occurring in stack 
> traces. This is to be expected as that method is called quite often when 
> comparing node states. 
> This issue is to explore options for reducing both CPU and memory overhead of 
> stable ids. 

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