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Increase reindex speed - jira.index.issue.threads not showing in Advanced Settings

Sha Aquino

Hi,

We are trying to increase our reindex speed because it is currently at the rate of 1% in 1hour.

I referred to this page: https://confluence.atlassian.com/jirakb/how-to-increase-the-speed-of-full-reindex-in-jira-826879636.html

Our current version: Jira Software 7.13.0

I have verified our home directory via Server info and jira-application.properties.

I created the jira-config.properties fiel in our home directory.

First time value:

jira.index.issue.threads = 20

Result: No entry in Advanced Settings

Second time value:

# jira.index.issue.threads = 10
jira.index.issue.threads = 20

Result: Still no entry in Advanced Settings.

Was hoping maybe anyone could guide me to the right path? We seem to be stuck.

Thanks in advance for any help.

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Nic Brough -Adaptavist-

What load is reindexing imposing on your server?

Increasing the threads may not be the right answer, you need to look at why it is slow first. With 10 threads for example, are your CPUs all busy? If so, then changing the threads is going to do precisely nothing - there's no CPU to parallelise the work on to.

Sha Aquino

Hi Nic,

First issue we encountered was our background reindex takes up to 48 hours to complete which is why we are trying this step based on the page I have mentioned.

While working on this issue, another issue arises and now our background re-index keeps on failing and does not go beyond 2%.

Upon reviewing our logs, we found 2 causes.

1. Server connection time outs

2. We are getting Error getting the next result (The result set is closed)

Upon research on #2, I came across this - https://confluence.atlassian.com/jirakb/jira-re-indexing-fails-with-error-getting-the-next-result-this-resultset-is-closed-346947669.html

Workaround in this article is to update the maxqueue size to 4000 but it can be applied to versions 8+ to mitigate the issue. Unfortunately, we are still on 7.13.0 and are unable to upgrade our version and unable to apply the workaround so we resorted to the last entry which was to increase our pool-max-size.

With the increase to pool-max-size we thought we could try increasing the reindex speed as well to try and mitigate #1.

Thanks in advance for any recommendation you may have for us.

Nic Brough -Adaptavist-

You need to monitor what the server is doing to try to find out where the bottleneck is - what are the CPUs, memory and disk doing during the re-index? Which one(s) of them are overloaded?

Sha Aquino

Hi Nic,

This is our numbers while background reindex is running.

As per our infra team, these numbers are okay.

Let me know what you think.

Ananias Gutierrez_kzdsge

Hello @Nic Brough -Adaptavist-
You can add this file jira-config.properties and put the following configuration (jira.index.issue.threads = 20
) while jira 7.1.10 is being indexed, we currently have over 600k records on our instance and it is indexing 2% in 10h. I would like to know if I can do something while the application is indexing to increase its indexing speed.

#file jira-config.properties<br>jira.index.issue.threads = 20

I will highly appreciate your advice and recommendation.

Thanks in advance for any assistance.

Nic Brough -Adaptavist-

Decreasing the threads may be a better option, it depends on how your OS handles threads and the CPUs you've got available.

It is a lot more complex than this, but for the fastest indexing, you should try to aim for only 1-3 threads per CPU core to minimise swapping and other overheads. If I were trying to run a large Jira on this laptop, I'd set the max threads to 11, to give everything else a bit of priority. On a dedicated server, a few more, as long as the OS has plenty of space to work too.

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