Ian Boston created OAK-4726:
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             Summary: Add Metrics coverage to the Lucene Indexer
                 Key: OAK-4726
                 URL: https://issues.apache.org/jira/browse/OAK-4726
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: lucene
    Affects Versions: 1.5.8
            Reporter: Ian Boston


Although there are some stats surrounding the Lucene indexing processes it 
would be useful to have metrics style stats available. 

Looking at the code, the implementations IndexWriter look like the right place 
to add the metrics. These could be global aggregate metrics, ie one set of 
metrics covering all IndexWriter implementations, or there could be individual 
metrics for each Lucene index definition. The latter would be more useful as it 
will allow detailed stats on individual metrics. 

These metrics will only give information on the writer operations, and not any 
Tokenizing operations. 

Patch in the form of a pull request will flow.



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