Do we have any guidelines available on how long it should take to re-index a jira instance?
My jira instance (4.1.2) takes 30 min to re-index (40,000 issues,2K users, 100 custom fields and 200 projects) so i am not quite sure if it is taking usual time or longer than expected?
Moreover, has anyone experienced faster index time after upgrading to a higher Jira version?
Yes, I did a test recently - indexing an old v4 live system takes X minutes. Upgrading to 5.1, the reindexing took around 75% of the time.
However, there's no sane way to give you a quantitative guideline, because it's a function of
And of course, there's an interaction where some of these will be utterly irrelevant to the speed because others are far slower and hence they're blocking/waiting.
However, for any given system, it does tend to scale roughly linearly with the number of issues. If you make no changes to your Jira, other than doubling the number of issues, you'll find it takes an hour to re-index. Delete 20,000 issues, you'll find it drops to quarter of an hour.
I think Nic has covered most of the points but asking a question like this it would also help to say what the type of environment was. There can be quite a bit of difference between a VM hosted service with data on a SAN vs a dedicated physical host with fast disks locally mounted.
But I'd say 30 min is fine for a server that size. The last one I reindexed was about 60k issue, 300 projects, 400 custom fields, 3k users, VM hosting with slow-ish disks and it took just over 30 mins
You don't tell us the volume of issues, so there's no way to tell if that's fast or slow.
Remember a reindex basically has to read every. single. issue. And all its data from several other tables. Then build and write an index record.
How to fix it depends on the volume and what the bottleneck might be, if there even is one.
VM: 4 CPUs, 4GB JVM
EXACT Same data on physical Server:
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