WL#1739: Handler: use HA_EXTRA_CACHE
Affects: Server-5.0 — Status: Un-Assigned — Priority: Medium
HA_EXTRA_CACHE should be used with position() and rnd_pos() to cache the records marked tith position(). They can then be fetched directly from the cache wqhen rnd_pos is called. The size of this cache is received with extra_opt (HA_EXTRA_CACHE, size_of_cache). Make class for this cache, where size_of_cache is in bytes.
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