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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2018/10/19 09:31:03 UTC
[jira] [Updated] (OAK-7852) Blocked background flush can cause
sever data loss
[ https://issues.apache.org/jira/browse/OAK-7852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Dürig updated OAK-7852:
-------------------------------
Summary: Blocked background flush can cause sever data loss (was: Blocked backfround flush can cause sever data loss)
> Blocked background flush can cause sever data loss
> ---------------------------------------------------
>
> Key: OAK-7852
> URL: https://issues.apache.org/jira/browse/OAK-7852
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: segment-tar
> Reporter: Michael Dürig
> Assignee: Michael Dürig
> Priority: Major
> Fix For: 1.10
>
>
> When the {{FileStore background task}} fails (e.g. because of a deadlock) and the {{FileStore}} is subsequently shutdown in an unclean way ({{kill -9}}) then there is a risk of a sever data loss. Although a journal could be reconstructed from the segments, there is a chance that most if not all of the revisions written since the failure of the background tasks are inconsistent with a {{SNFE}}.
> The expectation for such a case should be that a journal could be reconstructed from the segments and that all but the last few revisions are consistent.
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