Roman Leventov 0e926e8652 Prohibit assigning concurrent maps into Map-typed variables and fields and fix a race condition in CoordinatorRuleManager (#6898) ... * Prohibit assigning concurrent maps into Map-types variables and fields; Fix a race condition in CoordinatorRuleManager; improve logic in DirectDruidClient and ResourcePool * Enforce that if compute(), computeIfAbsent(), computeIfPresent() or merge() is called on a ConcurrentHashMap, it's stored in a ConcurrentHashMap-typed variable, not ConcurrentMap; add comments explaining get()-before-computeIfAbsent() optimization; refactor Counters; fix a race condition in Intialization.java * Remove unnecessary comment * Checkstyle * Fix getFromExtensions() * Add a reference to the comment about guarded computeIfAbsent() optimization; IdentityHashMap optimization * Fix UriCacheGeneratorTest * Workaround issue with MaterializedViewQueryQueryToolChest * Strengthen Appenderator's contract regarding concurrency		2019-02-04 09:18:12 -08:00
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src	Prohibit assigning concurrent maps into Map-typed variables and fields and fix a race condition in CoordinatorRuleManager (#6898)	2019-02-04 09:18:12 -08:00
pom.xml	add version comparator for StringComparator (#6745)	2019-01-08 17:17:03 -08:00