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From "angela (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-4920) DefaultSyncHandler.listIdentities() search too broad, triggers traversal warning
Date Wed, 01 Mar 2017 13:46:45 GMT

     [ https://issues.apache.org/jira/browse/OAK-4920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

angela updated OAK-4920:
------------------------
    Summary: DefaultSyncHandler.listIdentities() search too broad, triggers traversal warning
 (was: Performance: DefaultSyncHandler.listIdentities() search too broad, triggers traversal
warning)

> DefaultSyncHandler.listIdentities() search too broad, triggers traversal warning
> --------------------------------------------------------------------------------
>
>                 Key: OAK-4920
>                 URL: https://issues.apache.org/jira/browse/OAK-4920
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: auth-external
>    Affects Versions: 1.4.8, 1.5.11
>            Reporter: Alexander Klimetschek
>            Assignee: angela
>              Labels: performance
>             Fix For: 1.8
>
>
> DefaultSyncHandler.listIdentities() collects users by [searching for all nodes under
/home|https://github.com/apache/jackrabbit-oak/blob/b3e62e3467bf6433b5a419c2f371331f33e57820/oak-auth-external/src/main/java/org/apache/jackrabbit/oak/spi/security/authentication/external/impl/DefaultSyncHandler.java#L143]
– the xpath query executed is
> {noformat}
> /jcr:root/home//element(*)[@jcr:primaryType]
> {noformat}
> With a few hundred users this easily gives an oak index traversal warning:
> {noformat}
> org.apache.jackrabbit.oak.spi.query.Cursors$TraversingCursor Traversed 1000 nodes with
filter Filter(query=select [jcr:path], [jcr:score], * from [nt:base] as a where [jcr:primaryType]
is not null and isdescendantnode(a, '/home') /* xpath: /jcr:root/home//element(*)[@jcr:primaryType]
*/, path=/home//*, property=[jcr:primaryType=[is not null]]); consider creating an index or
changing the query
> {noformat}
> A few lines later [it actually reduces|https://github.com/apache/jackrabbit-oak/blob/b3e62e3467bf6433b5a419c2f371331f33e57820/oak-auth-external/src/main/java/org/apache/jackrabbit/oak/spi/security/authentication/external/impl/DefaultSyncHandler.java#L151]
the result to authorizables which have a {{rep:externalId}}. Since OAK-4301 there is an oak
index for {{rep:externalId}}, so the query can be optimized by searching for anything with
{{rep:externalId}} instead:
> {code:java}
> userManager.findAuthorizables("rep:externalId", null);
> {code}



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