吴晟 Wu Sheng 5577f67de7 Support backend sampling (#1977) ... * Support sampling trace at server side and keep metric right. * Add a trace sampling document * Fix wrong default value. * Fix document issue. * Fix assemble issue. * Fix wrong settings and doc.		2018-11-29 23:33:07 +08:00
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binary.xml	Support backend sampling (#1977)	2018-11-29 23:33:07 +08:00