Chetan Mehrotra created OAK-2663:
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Summary: Unique property index can trigger OOM during upgrade of
large repository
Key: OAK-2663
URL: https://issues.apache.org/jira/browse/OAK-2663
Project: Jackrabbit Oak
Issue Type: Bug
Components: upgrade
Reporter: Chetan Mehrotra
Assignee: Chetan Mehrotra
{{PropertyIndexEditor}} when configured for unique index maintains an in memory
state of indexed property in {{keysToCheckForUniqueness}}. This set would
accumulate all the unique values being indexed.
In case of upgrade where the complete upgrade is performed in single commit
this state can become very large. Further later while exiting the editor
validates that all such values are actually unique by iterating over all such
values.
We should look into other possible ways to enforce uniqueness constraint
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