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https://issues.apache.org/jira/browse/OAK-9108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17130404#comment-17130404
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Thomas Mueller commented on OAK-9108:
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https://github.com/oak-indexing/jackrabbit-oak/pull/193
> Change default timeout to mark indexes corrupt
> ----------------------------------------------
>
> Key: OAK-9108
> URL: https://issues.apache.org/jira/browse/OAK-9108
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Priority: Major
> Labels: index
>
> Currently, async indexes (Lucene) are marked corrupt if they couldn't be
> updated for some time. I think the default delay of 30 minutes is far too
> low. In the past, we have seen the following cases where async indexing is
> delayed:
> * Topology problems (no leader)
> * High load prevents updating them
> For cases where index update is run, but failing, include:
> * Restart of Oak with inconsistent data in the /repository/index directory
> * Out-of-disk-space
> For these cases, it's better to stop Oak, clean the index directory, and
> restart. This might anyway be happening regularly (e.g. daily). Marking the
> index corrupt, so that reindexing is needed, doesn't seem to be needed or
> helping.
> This setting is already configurable in
> org.apache.jackrabbit.oak.plugins.index.AsyncIndexerService:
> failingIndexTimeoutSeconds. But instead of changing the configuration
> everywhere, it's probably better to change the default value for
> failingIndexTimeoutSeconds in Oak, to 604800L = 60L * 60 * 24 * 7 (one week).
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