It should be a rare operation if you have indexes in place

There is a reverse store mapping labels to sets of node ids

In 3.1 it uses a compressed lucene format 
In 3.2 a custom generational b+ tree
Details for both are only in the source



Von meinem iPhone gesendet

> Am 05.07.2017 um 07:31 schrieb Sun Yuhan <[email protected]>:
> 
> The NodeByLabelScan is very commonly used in cypher query execution plans. 
> However, it is not clear how this operation is executed in neo4j. 
> 
> What's more, I do not know how the label is managed and stored in neo4j. Are 
> there any materials online that I can refer to? Or I can refer to some source 
> code of neo4j to see the implementation details.
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