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https://issues.apache.org/jira/browse/OAK-3505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14954955#comment-14954955
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Alex Parvulescu commented on OAK-3505:
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attached v2 of the patch:
* one part is the missing index provider strategy: added a flag that will make
the commits fail, it can be set via the
_IndexUpdate.failOnMissingIndexProvider_ system property.
* second part is a potential recovery once the reindex flags have been set to
true: added a flag that will ignore all _reindex_ flags
(_IndexUpdate.ignoreReindexFlags_ system property).
Rationale for this second flag is really providing a way of getting back
control of a system stuck in reindexing. The way synchronous indexes work now
is once a reindex flag is set, the thread doing the commit will start
reindexing so it's basically blocked until reindexing is done, which can be a
really long time depending on the size of the repository. This can be made
exponentially worse by the _MissingIndexProviderStrategy_ which will set the
_reindex_ flag silently, leaving the reindexing work for a future thread, which
depending on the concurrency can actually mean more threads can start
reindexing at the same time in the near future. So having all threads
busy/stuck in reindexing means there's no access to the repository, but with
the help of this flag, one can have a running repo where by manual intervention
all _reindex_ flags can be set to false allowing the system to come online.
[~chetanm], [~ianeboston] feedback appreciated.
> Provide an optionally stricter policy for missing synchronous index editor
> providers
> ------------------------------------------------------------------------------------
>
> Key: OAK-3505
> URL: https://issues.apache.org/jira/browse/OAK-3505
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core
> Reporter: Alex Parvulescu
> Assignee: Alex Parvulescu
> Attachments: OAK-3505-v2.patch, OAK-3505.patch
>
>
> Currently a missing synchronous index editor provider will mark the specific
> index type with a reindex flag (OAK-3366). I'd like to provide the option to
> setup a strategy to fail the commit until a specific impl comes online.
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