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https://issues.apache.org/jira/browse/OAK-9350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17282451#comment-17282451
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Thomas Mueller commented on OAK-9350:
-------------------------------------
https://github.com/oak-indexing/jackrabbit-oak/pull/407
> Index update: release the correct checkpoint
> --------------------------------------------
>
> Key: OAK-9350
> URL: https://issues.apache.org/jira/browse/OAK-9350
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: indexing
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Priority: Major
> Labels: index
>
> The async index update uses checkpoints to ensure consistency: it
> * 1. creates checkpoint2
> * 2. indexes everything between checkpoint1 and checkpoint2
> * 3. update the indexing lane to checkpoint2
> If there is s a problem before step 3, the checkpoint2 is removed. That's
> fine.
> However, if there is a problem after step 3 is complete, in some cases it
> also removes checkpoint2. This is incorrect, as checkpoint2 is needed.
> We have seen this is the case if the node store is closed, but dispose works.
> See OAK-9300. So fixing that should resolve most issues. However, the current
> code is still not correct.
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