[Enhancement] Add more comprehensive prometheus jvm thread metrics on fe#5112

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morningman merged 3 commits intoapache:masterfrom

Dam1029:add_fe_thread_metrics

Jan 10, 2021

Commits on Dec 22, 2020

add comprehensive jvm thread metrics on fe
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Commits on Jan 6, 2021

Merge branch 'master' of github.com:apache/incubator-doris into add_fe_thread_metrics
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update docs of fe metrics
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