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Signed-off-by: zourunxin.zrx <zourunxin.zrx@oceanbase.com>
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Signed-off-by: zourunxin.zrx <zourunxin.zrx@oceanbase.com>
Codecov ReportAttention: Patch coverage is @@ Coverage Diff @@
## main #506 +/- ##
==========================================
- Coverage 91.45% 91.35% -0.11%
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Files 173 176 +3
Lines 10609 10810 +201
==========================================
+ Hits 9702 9875 +173
- Misses 907 935 +28
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Signed-off-by: zourunxin.zrx <zourunxin.zrx@oceanbase.com>
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A discard heap is introduced. The function of the discard heap is to save the nodes discarded in the previous round of queries and sort them by distance. If the results in the first round of queries are insufficient, another round of queries will be performed. In the next round, the nodes in the discard heap are used as candidate sets, and the neighbors that have not been visited are visited as new output results, and the discard heap is updated. Each subsequent round of queries will query ef_search nodes. The query ends when limitK is satisfied or discard is empty.