fix issue 4528, use thread safe ConcurrentDictionary instead of Dictionary#4570

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frank-dong-ms-zz merged 4 commits intodotnet:masterfrom

frank-dong-ms-zz:issue-4528

Dec 13, 2019

Commits on Dec 12, 2019

fix issue 4528, use thread safe ConcurrentDictionary instead of Dictionary which is not thread safe in read/write mode
frank-dong-ms
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Commits on Dec 13, 2019