"background merge hit exception" on close issue


since about an hour our Jira installation yields …

Error: java.lang.RuntimeException: java.io.IOException: background merge hit exception: _8tjz:C156612 _8tk0:c1 into _8tk1 [optimize] [mergeDocStores]

… when closing an issue. The workflow step itself works, the issue is closed afterwards and integrity checks are all ok. So, besides the warning/error nothing else serious seems(!) to happen but of course we are absolutely not feeling happy. According to the hosting provider disk space is rather full but not to the very last bit ... Any other action (as far as tried) seems to run smoothly, there seems to be no slowing down.

Any other hints?

Thanks in advance

2 answers

1 accepted

The "full but not to the last bit" seemed to be the problem. After cleaning up the attachment folder and freeing disk space, everything resumed normal. Larger disk space to be prepared.


0 vote

Hi phi,

Upon the error, it seem related to file corruption in JIRA instance. Can you try to perform the following workaround to force JIRA rebuild the file again:

  • Shutdown JIRA
  • Navigate to $JIRA_HOME\caches directory, and remove the content of the caches directory
  • Restart your instance
  • Perform reindexing Administration > Indexing

Hope it helps.


John Chin

Suggest an answer

Log in or Join to answer
Community showcase
Sarah Schuster
Posted Jan 29, 2018 in Jira

What are common themes you've seen across successful & failed Jira Software implementations?

Hey everyone! My name is Sarah Schuster, and I'm a Customer Success Manager in Atlassian specializing in Jira Software Cloud. Over the next few weeks I will be posting discussion topics (8 total) to ...

3,323 views 14 20
Join discussion

Atlassian User Groups

Connect with like-minded Atlassian users at free events near you!

Find a group

Connect with like-minded Atlassian users at free events near you!

Find my local user group

Unfortunately there are no AUG chapters near you at the moment.

Start an AUG

You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs

Groups near you
Atlassian Team Tour

Join us on the Team Tour

We're bringing product updates and pro tips on teamwork to ten cities around the world.

Save your spot