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https://issues.apache.org/jira/browse/OAK-3001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14733695#comment-14733695
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Stefan Egli commented on OAK-3001:
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OAK-3001 is blocked by OAK-3213
> Simplify JournalGarbageCollector using a dedicated timestamp property
> ---------------------------------------------------------------------
>
> Key: OAK-3001
> URL: https://issues.apache.org/jira/browse/OAK-3001
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core, mongomk
> Reporter: Stefan Egli
> Assignee: Stefan Egli
> Priority: Critical
> Labels: scalability
> Fix For: 1.3.7, 1.2.6
>
>
> This subtask is about spawning out a
> [comment|https://issues.apache.org/jira/browse/OAK-2829?focusedCommentId=14585733&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14585733]
> from [~chetanm] re JournalGC:
> {quote}
> Further looking at JournalGarbageCollector ... it would be simpler if you
> record the journal entry timestamp as an attribute in JournalEntry document
> and then you can delete all the entries which are older than some time by a
> simple query. This would avoid fetching all the entries to be deleted on the
> Oak side
> {quote}
> and a corresponding
> [reply|https://issues.apache.org/jira/browse/OAK-2829?focusedCommentId=14585870&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14585870]
> from myself:
> {quote}
> Re querying by timestamp: that would indeed be simpler. With the current set
> of DocumentStore API however, I believe this is not possible. But:
> [DocumentStore.query|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/DocumentStore.java#L127]
> comes quite close: it would probably just require the opposite of that
> method too:
> {code}
> public <T extends Document> List<T> query(Collection<T> collection,
> String fromKey,
> String toKey,
> String indexedProperty,
> long endValue,
> int limit) {
> {code}
> .. or what about generalizing this method to have both a {{startValue}} and
> an {{endValue}} - with {{-1}} indicating when one of them is not used?
> {quote}
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