Deleted documents are dropped when segments are merged, which will change the follows' docID. so how does es fetch the right source with stale docIDs.

It works because org.apache.lucene.index.IndexReader is ref-counted, and we use the same IndexReader for all phases of a search.

vsop_479 (Zhou) January 20, 2021, 2:57am 3

How to hold？
I don't find any filter to skip segments using by searches in findMerges source code.

Topic		Replies	Views
Scrolling and lucene segments Elasticsearch	2	594	July 6, 2017
Segments marked as deleted? Elasticsearch	8	700	July 6, 2017
Segment Merge query Elasticsearch	3	571	July 5, 2017
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Will delete holds last forever even new documents keep in? Elasticsearch	4	509	July 5, 2017

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How does es fetch the right source with stale docIDs, after lucene merged queried segments

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