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Posted to oak-issues@jackrabbit.apache.org by "Thomas Mueller (JIRA)" <ji...@apache.org> on 2015/03/09 08:58:38 UTC
[jira] [Commented] (OAK-2549) Persistent Cache: support append-only
mode
[ https://issues.apache.org/jira/browse/OAK-2549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14352655#comment-14352655 ]
Thomas Mueller commented on OAK-2549:
-------------------------------------
I changed the title to "support" instead of "use" append-only mode.
The reason is, first I thought that append only-mode is really needed to avoid errors, but now I found out that the errors were caused by Thread.interrupt(), which is now solved thanks to OAK-2571.
> Persistent Cache: support append-only mode
> ------------------------------------------
>
> Key: OAK-2549
> URL: https://issues.apache.org/jira/browse/OAK-2549
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Fix For: 1.2, 1.1.8, 1.0.13
>
>
> The persistent cache mainly adds data (in some rare cases it overwrites existing entries: the list of child nodes, if more child nodes are read). Because of that, the storage backend (H2 MVStore currently) can operate in append-only mode.
> This should also avoid the following problem: "IllegalStateException: Chunk ... no longer exists [1.4.185/9]". This is probably a bug in H2, where old chunks are removed too early. This error is not (yet) reproducible, but happened while testing.
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