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https://issues.apache.org/jira/browse/OAK-2404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Dürig updated OAK-2404:
-------------------------------
Labels: gc monitoring (was: )
> Provide more information in SegmentNotFoundException
> ----------------------------------------------------
>
> Key: OAK-2404
> URL: https://issues.apache.org/jira/browse/OAK-2404
> Project: Jackrabbit Oak
> Issue Type: Sub-task
> Components: segmentmk
> Reporter: Michael Dürig
> Labels: gc, monitoring
>
> There is currently no way to distinguish between a
> {{SegmentNotFoundException}} occurring because of a removed segment by gc or
> because of another corruption. Optimally we would tell in the exception why
> the segment is gone, how old it was when gc removed it and who/what was still
> referring to it at that time. In order to do that, we probably need some kind
> of log for the following data: When a segment was removed (because a new
> generation of the .tar file was made, or because the .tar file was removed),
> we should log the segment, the file name, and the date+time of the removal.
> If the segment was then not found because it was too old, then another type
> of exception should be thrown instead, for example "ReadTimeoutException",
> with a message that contains as much data as possible: the data+time of the
> segment, date+time of the removal of the segment, about when compaction was
> run, date+time of the session login and last refresh, the stack trace of
> where the session was acquired.
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