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https://issues.apache.org/jira/browse/OAK-4815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15495950#comment-15495950
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Chetan Mehrotra commented on OAK-4815:
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We should also look into decoupling the QueryEngineSettings from MBean aspect.
This causes issue for me in
[oakutils|https://github.com/chetanmeh/oakutils/blob/master/src/main/java/org/apache/jackrabbit/oak/query/QueryEngineSettings.java]
as Google App Engine env does not allow access to jmx api
> ReferenceIndex slowdown due to OAK-3403
> ---------------------------------------
>
> Key: OAK-4815
> URL: https://issues.apache.org/jira/browse/OAK-4815
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: query
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Fix For: 1.5.11
>
>
> In OAK-3403, a lookup using the ReferenceIndex now uses "new FilterImpl()",
> which in turn uses "new QueryEngineSettings()". And this is slow, because it
> is an AnnotatedStandardMBean, and instantiating such an object is quite slow.
> (Actually it is also wrong, because the configured query engine settings are
> not used in that case.)
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