[HPCC-24712] Ignore a TLK index root that has a single row in it - HPCC

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Type: Improvement
Status: Resolved
Priority: Minor
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 7.12.0
Component/s: JHTree
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Pull Request URL:
https://github.com/hpcc-systems/HPCC-Platform/pull/14151

Description

It's not uncommon for a TLK to have a "root node" that has a single entry in it pointing to a leaf node with all the info in. In such cases we can avoid a lot of cache lookups by pointing the "root" in the CKeyIndex directly to the (single) leaf.

It might also be ok to do this for non TLK indexes though it will be much less common.

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Assignee:: Richard Chapman

Reporter:: Richard Chapman

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Dates

Created:: 09/Sep/20 3:21 PM

Updated:: 07/Sep/22 7:14 PM

Resolved:: 10/Sep/20 4:01 PM