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https://issues.apache.org/jira/browse/OAK-6121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcel Reutegger reassigned OAK-6121:
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Assignee: Marcel Reutegger (was: Chetan Mehrotra)
> Add a metric to measure find document call resulting in null
> ------------------------------------------------------------
>
> Key: OAK-6121
> URL: https://issues.apache.org/jira/browse/OAK-6121
> Project: Jackrabbit Oak
> Issue Type: Task
> Components: documentmk
> Reporter: Chetan Mehrotra
> Assignee: Marcel Reutegger
> Priority: Minor
> Fix For: 1.8
>
>
> At times some calls are often seen which result in findDocument call
> resulting in null. In normal flow such occurrence should not be high. However
> due to way some code is written this can result in higher number of such
> calls.
> # As seen in OAK-5511 where code always looks for "oak:index" node under each
> changed node
> # In another case a caller may fetch a path as Item via {{Session#getItem}}
> {noformat}
> 22.02.2017 12:36:33.832 *TRACE* [sling-oak-observation-149]
> org.apache.jackrabbit.oak.plugins.document.DocumentStoreStats.perf
> findUncached on
> key=8:/content/dam/test.png/jcr:content/renditions/original/jcr:primaryType,
> isSlaveOk=false [took 0ms]
> {noformat}
> To check if this is happening we should have a metric defined to measure rate
> of such calls
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