You are viewing a plain text version of this content. The canonical link for it is here.
Posted to oak-issues@jackrabbit.apache.org by "Thomas Mueller (JIRA)" <ji...@apache.org> on 2017/06/22 09:17:00 UTC

[jira] [Created] (OAK-6381) Improved index analysis tools

Thomas Mueller created OAK-6381:
-----------------------------------

             Summary: Improved index analysis tools
                 Key: OAK-6381
                 URL: https://issues.apache.org/jira/browse/OAK-6381
             Project: Jackrabbit Oak
          Issue Type: Improvement
            Reporter: Thomas Mueller
            Assignee: Thomas Mueller
             Fix For: 1.8


It would be good to have more tools to analyze indexes:

* For Lucene indexes, get a histogram of samples (terms). We have "getFieldInfo", which shows which fields are how common, but we don't have terms. For example the /oak:index/lucene index contains 1 million fulltext fields and node names for 1 million nodes, but I wonder why, and what typical nodes names are, and maybe fulltext for most nodes is actually empty. Maybe a new method "getTermHistogram(int sampleCount)" or similar
* For property indexes, number of updated nodes per second or so. Right now we can just analyze the counts per key, but some indexes / keys are very volatile (see many short lived entries)
* For Lucene indexes, writes per second or so (in MB).
* How indexes are used (approximate read nodes / MB per hours)



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)