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https://issues.apache.org/jira/browse/OAK-665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13592255#comment-13592255
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Marcel Reutegger edited comment on OAK-665 at 3/4/13 3:03 PM:
--------------------------------------------------------------
Fixed in revision: 1452336
The cache in KernelNodeStore now also caches the result of a nodeExists() call
when it returns false (node does not exist).
was (Author: mreutegg):
Fixed in revision: 1452336
The cache in KernelNodeStore now also caches the result of a nodeExists() call,
which returned false (node does not exist).
> Excessive MK.nodeExists() calls with many child nodes
> -----------------------------------------------------
>
> Key: OAK-665
> URL: https://issues.apache.org/jira/browse/OAK-665
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core
> Affects Versions: 0.6
> Reporter: Marcel Reutegger
> Assignee: Marcel Reutegger
> Fix For: 0.7
>
>
> The number of calls to MK.nodeExists() go up excessively once a node reaches
> KernelNodeState.MAX_CHILD_NODE_NAMES.
> There are a *lot* of repeated calls to MK.nodeExists() for the same path.
> E.g. using the test from OAK-643, the nodeExists() call start to spike once
> MAX_CHILD_NODE_NAMES is reached. Adding another 100 child nodes then resulted
> in 400 successive calls to "/testRoot/test4/oak:index" and many more calls to
> other paths.
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