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Posted to oak-issues@jackrabbit.apache.org by "Marcel Reutegger (JIRA)" <ji...@apache.org> on 2015/04/21 10:14:58 UTC
[jira] [Updated] (OAK-2791) Change default for
oak.mongo.maxDeltaForModTimeIdxSecs
[ https://issues.apache.org/jira/browse/OAK-2791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Marcel Reutegger updated OAK-2791:
----------------------------------
Fix Version/s: 1.2.2
Merged into 1.2 branch: http://svn.apache.org/r1675063
> Change default for oak.mongo.maxDeltaForModTimeIdxSecs
> ------------------------------------------------------
>
> Key: OAK-2791
> URL: https://issues.apache.org/jira/browse/OAK-2791
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core, mongomk
> Reporter: Marcel Reutegger
> Assignee: Marcel Reutegger
> Fix For: 1.3.0, 1.2.2
>
>
> OAK-1966 introduced a hint for MongoDB to either use the _id or _modified
> index, depending on the time delta of the _modified constraint. The default
> value is currently -1, which mean MongoDocumentStore will always pass an _id
> hint. I would like to enable the _modified hint for small deltas less than
> 60 seconds. Now that OAK-2131 is implemented, the number of background updates
> is much lower and a query with a _modified constraint will better match
> documents that actually have been modified since a given timestamp.
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