Thomas Mueller created OAK-500:
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Summary: PropertyIndex: stored data in child nodes instead of
properties
Key: OAK-500
URL: https://issues.apache.org/jira/browse/OAK-500
Project: Jackrabbit Oak
Issue Type: Improvement
Reporter: Thomas Mueller
Currently, the PropertyIndex (the one in package
org.apache.jackrabbit.oak.plugins.index.property) stores index keys as
properties in the same node. This is very good for cases where there are few
entries in the index, but it problematic if there are many (because the node
gets very big, and for conflict resolution handling).
Instead of storing values in properties, index keys could be stored in child
nodes. And index values (currently the list of paths) could be stored as
properties (specially for unique indexes), or as child nodes (for index keys
with many possible paths, for example a node type index, for node type
"nt:unstructured"). This would result in possibly many nodes, but it would be
relatively simple to implement (compared to a b-tree index).
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