dtspence opened a new issue, #4485:
URL: https://github.com/apache/accumulo/issues/4485
**Describe the bug**
A tablet unload (i.e. due to migration request) may be delayed while a
tablet is attempting to unload, but cannot due to pending compaction
cancellations. We have observed that the tablet will wait for as long as 50+
minutes while compactions cancel.
**Versions (OS, Maven, Java, and others, as appropriate):**
- Affected version(s) of this project: 2.1.2
**To Reproduce**
We are attempting to gather additional information to reproduce. Some
preliminary information:
* Tablets are being compacted by t-servers (i.e. not using external
compactions).
* Data being compacted is not expected to be filtered, however we are unsure
if somehow the iterator may not be returning for an extended time.
**Expected behavior**
Migration request should complete within some shorter time.
**Screenshots**
N/A
**Additional context**
The manager logs:
```
2024-04-22T16:23:58,434 [balancer.HostRegexTableLoadBalancer] WARN: Not
balancing tables due to 1 outstanding migrations
```
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