[SLING-3380] Reduce memory footprint of JcrResourceListener

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: JCR Resource 2.2.8
• Fix Version/s: JCR Resource 2.3.2
• Component/s: JCR
• Assignee: Carsten Ziegeler
• Reporter: Michael Dürig
• Created: 06/Feb/14 20:51
• Updated: 08/Mar/14 16:19
• Resolved: 19/Feb/14 13:52

Description

JcrResourceListener.onEvent(EventIterator) keeps references to all Event instances in the passed iterator. This has turned out as a memory bottleneck e.g. in the scenario where a large sub-tree is copied and NODE_ADDED events for all nodes in that sub-tree are generated.

Furthermore Oak will be able to handle arbitrarily large transactions (Session.save). In such cases the EventIterator might contains millions of events.

Issue Links

• relates to: SLING-3279 Leverage improved observation support from Oak