Marcel Reutegger created OAK-1281:
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Summary: Incorrect path sorting in background write
Key: OAK-1281
URL: https://issues.apache.org/jira/browse/OAK-1281
Project: Jackrabbit Oak
Issue Type: Bug
Components: core, mongomk
Affects Versions: 0.13
Reporter: Marcel Reutegger
Assignee: Marcel Reutegger
Priority: Minor
The background write in MongoNodeStore does not sort path correctly. It is
supposed to sort them with highest path depth first and then compare the path
string itself (as written in the comments).
A typo in the comparator implementation causes a differnt order than intended
(depth is calculated twice for o1).
In addition, there's a problem with the way MongoNodeStore updates the
_lastRev. It may use a multi update and the order these updates are applied is
not specified. Thus, it may happen that the root document is updated before
other documents are updated. This may result in temporarily inconsistent
_lastRev entries in the document hierarchy. I.e. a cluster node detects a
_lastRev update from another cluster node on the root document, but on
descendant documents the _lastRev isn't updated and visible yet.
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