This command line utility computes basic statistics about nodes and properties in a JCR repository created by Apache Jackrabbit Oak's Segment Store.
You can build this project by executing the following command:
mvn clean package
You can run the built JAR by executing the following command:
java -jar target/oak-node-stats-*.jar directory
where directory is the path on the file system of the repository.
You can specify a path in the repository as a second argument. In this case, only statistics relevant to that subtree of the repository are computed.
java -jar target/oak-node-stats-*.jar directory /content
After a successful execution, the program will output on the command line a certain amount of statistics, indexed by type. The output has been designed to be easier to consume with standard command line utilities. An example of output is the following (some parts are omitted for clarity):
properties.n 266104501
properties.max 4999
properties.sum 885316929
properties.mean 3.326952102174326
properties.histogram 0 100 266104377
properties.histogram 100 200 68
properties.histogram 200 300 6
properties.histogram 300 400 2
properties.histogram 600 700 13
properties.histogram 800 900 1
properties.histogram 1000 1100 3
properties.histogram 2900 3000 3
properties.histogram 4900 5000 28
property.names.length.n 266104501
property.names.length.max 18930
property.names.length.sum 11060586969
property.names.length.mean 41.564824824214455
property.names.length.histogram 0 100 213243682
property.names.length.histogram 100 200 35637071
property.names.length.histogram 200 300 15966272
property.names.length.histogram 300 400 561311
...
This code is released under an MIT license.