[OAK-8066] Nodes with many direct children can lead to OOME when saving

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.12.0, 1.8.16, 1.10.5
• Component/s: segment-tar
• Labels: TarMK
• Assignee: Michael Dürig
• Reporter: Michael Dürig
• Created: 21/Feb/19 08:35
• Updated: 18/Dec/22 01:56
• Resolved: 01/Mar/19 14:48

Description

DefaultSegmentWriter keeps a map of child nodes of a node being written. This can lead to high memory consumption in the case where many child nodes are added at the same time. The latter could happen in the case where a node needs to be rewritten because of an increase in the GC generation from a concurrently completed revision garbage collection.

Issue Links

• is related to: OAK-8559 Backport OAK-8066 to 1.10 and 1.8
• links to: GitHub Pull Request #143
• links to: GitHub Pull Request #144

Sub-Tasks

• Log warning for too many transient modifications of direct child nodes: Closed