文章目錄

• • Profile API 簡介

Profile API 簡介

Profile API提供了有關(guān)搜索請求中各個組件的執(zhí)行的詳細時序信息。它使用戶可以洞悉搜索請求是如何在低級執(zhí)行的，從而使用戶可以了解為什么某些請求很慢的原因，并采取措施加以改進。請注意，Profile API，不統(tǒng)計網(wǎng)絡(luò)延遲，搜索獲取階段所花費的時間，請求花費在隊列中或在協(xié)調(diào)節(jié)點上合并分片響應(yīng)所花費的時間。

Profile API的輸出非常冗長，尤其是對于在許多分片上執(zhí)行的復(fù)雜請求而言。建議打印漂亮的響應(yīng)，以幫助理解輸出

GET /twitter/_search {"profile": true,"query" : {"match" : { "message" : "some number" }} }

返回

{"took": 25,"timed_out": false,"_shards": {"total": 1,"successful": 1,"skipped" : 0,"failed": 0},"hits": {"total" : {"value": 4,"relation": "eq"},"max_score": 0.5093388,"hits": [...] },"profile": {"shards": [{"id": "[2aE02wS1R8q_QFnYu6vDVQ][twitter][0]","searches": [{"query": [{"type": "BooleanQuery","description": "message:some message:number","time_in_nanos": "1873811","breakdown": {"score": 51306,"score_count": 4,"build_scorer": 2935582,"build_scorer_count": 1,"match": 0,"match_count": 0,"create_weight": 919297,"create_weight_count": 1,"next_doc": 53876,"next_doc_count": 5,"advance": 0,"advance_count": 0,"compute_max_score": 0,"compute_max_score_count": 0,"shallow_advance": 0,"shallow_advance_count": 0,"set_min_competitive_score": 0,"set_min_competitive_score_count": 0},"children": [{"type": "TermQuery","description": "message:some","time_in_nanos": "391943","breakdown": {"score": 28776,"score_count": 4,"build_scorer": 784451,"build_scorer_count": 1,"match": 0,"match_count": 0,"create_weight": 1669564,"create_weight_count": 1,"next_doc": 10111,"next_doc_count": 5,"advance": 0,"advance_count": 0,"compute_max_score": 0,"compute_max_score_count": 0,"shallow_advance": 0,"shallow_advance_count": 0,"set_min_competitive_score": 0,"set_min_competitive_score_count": 0}},{"type": "TermQuery","description": "message:number","time_in_nanos": "210682","breakdown": {"score": 4552,"score_count": 4,"build_scorer": 42602,"build_scorer_count": 1,"match": 0,"match_count": 0,"create_weight": 89323,"create_weight_count": 1,"next_doc": 2852,"next_doc_count": 5,"advance": 0,"advance_count": 0,"compute_max_score": 0,"compute_max_score_count": 0,"shallow_advance": 0,"shallow_advance_count": 0,"set_min_competitive_score": 0,"set_min_competitive_score_count": 0}}]}],"rewrite_time": 51443,"collector": [{"name": "CancellableCollector","reason": "search_cancelled","time_in_nanos": "304311","children": [{"name": "SimpleTopScoreDocCollector","reason": "search_top_hits","time_in_nanos": "32273"}]}]}],"aggregations": []}]} }

具體的實例分析后面補充

超強干貨來襲 云風(fēng)專訪：近40年碼齡，通宵達旦的技術(shù)人生

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