Is indexing required after deleting 50000 issues from JIRA?

Yesterday we have deleted some projects and issues from JIRA server. We see some error messages in the log file that indexes corrupt. Is indexing required after deleting issues? Is integrity check also required?

2014-02-17 00:57:44,917 http-80-43 ERROR XXXXX 57x3017x65 1233pcw /rest/gadget/1.0/issueTable/filter [jira.issue.statistics.ComponentStatisticsMapper] Indexes may be corrupt - unable to retrieve component with id '13246'.

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No. You should not need to re-index after delete. Or bulk-edit. Or anything else you do in the UI.

However... there is a bugette in Jira somewhere that causes this error - I've never got to the bottom of it, but neither have I ever been able to tie any problem to it. So, I think it's (mostly) harmless in that it won't really break anything other than growing your log a bit and being vaguely annoying when you're looking for real errors.

Reindexing will fix it, but I wouldn't really panic about it as long as your issue searches (based on component) work ok.

Thank you Nic. Is it required to remove the caches folder from the jira-home directory before Reindexing?

No. I'd leave them alone.

However, I would, if possible, remove the "issues" directory underneath it - a couple of times, I've seen "full re-index" not quite clear it out. (If in doubt, move it, rather than delete it)

Thanks for your comments, Nic !!

I had indexed without removing the cache folder.. Now there are no more errors...

When the indexes are currupted we found the Full GC was too high and many users complained about the performance but after the recent reindex, the full GC is reduced and so we are expecting little inprovement in performance for users. Hopefully we dont get any more complaints from users till next week as we are going to upgrade jira and confluence very soon.

How did you delete them? Bulk edit in the GUI?

Yes.. From GUI using bulk edit and project delete option.

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