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第六章節:Term-based 索引分區法的分散 / 聚集(scatter/gather)搜索法造成尾部延遲放大的原因? - Mason #66

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0x171-0 opened this issue Jul 19, 2022 · 1 comment
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@0x171-0
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0x171-0 commented Jul 19, 2022

想請教:

  • 是因為本地索引的索引分布在很多節點,導致如果要查詢符合條件的資料必須要訪問所有節點?
    • 比如:符合索引 color:red 的資料均勻分佈在所有的節點,所以當使用者搜尋 color:red 的時候,就必須訪問所有節點把符合條件的資料都找出來,可是如果剛好一個節點是 Hot Spot、回應很慢,就會造成尾部延遲放大?
@0x171-0 0x171-0 changed the title 第六章節:Term-based 分散 / 聚集(scatter/gather)搜索法造成尾部延遲放大的原因? 第六章節:Term-based 分散 / 聚集(scatter/gather)搜索法造成尾部延遲放大的原因? - Mason Jul 19, 2022
@0x171-0 0x171-0 changed the title 第六章節:Term-based 分散 / 聚集(scatter/gather)搜索法造成尾部延遲放大的原因? - Mason 第六章節:Term-based 索引分區法的分散 / 聚集(scatter/gather)搜索法造成尾部延遲放大的原因? - Mason Jul 19, 2022
@kylemocode kylemocode added the question Further information is requested label Jul 19, 2022
@Parkerhiphop
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每個 Partition 都會維護自己的次級索引,因此 Query 時會需要查所有的東西,其中有些查比較慢的話,就會造成尾部延遲放大。
(樓主理解正確)

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