EXPB-2299 Speed up schema lookup for huge schemas #157

Job	Run time
Linux (JDK 11), Avatica main	3m 39s
Error Prone (JDK 11), latest Guava	1m 55s
CheckerFramework (JDK 11)	9m 37s
CheckerFramework (JDK 11), oldest Guava	9m 48s
Druid Tests	5m 45s
Linux (JDK 11), Pacific/Chatham Timezone	2m 55s
Linux (JDK 17)	2m 34s
Linux (JDK 19)	2m 26s
Linux (JDK 8), latest Guava, America/New_York Timezone	2m 45s
Linux (JDK 8), oldest Guava, America/New_York Timezone	2m 46s
Linux (JDK 8) Slow Tests	0s
macOS (JDK 19)	6m 34s
Windows (JDK 17)	3m 58s
Windows (JDK 8)	4m 9s
	58m 51s

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