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DynamicSentinelProperty listener set iterator race-condition | DynamicSentinelProperty listeners 并发更新问题 #2497

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#2519
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DynamicSentinelProperty listener set iterator race-condition | DynamicSentinelProperty listeners 并发更新问题#2497
#2519
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good first issueGood for newcomerskind/enhancementCategory issues or prs related to enhancement.
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1.8.4
@yyalc

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@yyalc
yyalc
opened on Dec 16, 2021

问题类DynamicSentinelProperty
字段listeners使用的是Collections.synchronizedSet，这个类的iterator等迭代方法需要用户自己处理并发问题，但是当前类并没有处理，会导致在updateValue和addListener/removeListener有冲突，可能刚获取到iterator就更新了listener，导致并发更新异常

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