keith-turner opened a new issue, #4610:
URL: https://github.com/apache/accumulo/issues/4610
**Describe the bug**
Tablets can only be scanned when they have less than a configurable number
of files. Scan servers remember a tablets files for a configurable time
period. If a tablet has too many files to scan then it may be unreadable on a
scan server for scan servers configured period to remember tablets files even
if the tablet is compacted.
This is a suspected bug, need to write a test to confirm.
**To Reproduce**
The following outlines a possible test to confirm this problem.
* Configure max files for scan to 20
* Somehow temporarily disable compactions on a test table
* Create greater than 20 files on tablet in the test table
* Set the scan server tablet metadata cache timeout to 10 mins
* Attempt to scan the tablet w/ >20 files on a scan server
* Wait a little bit
* enable compactions to reduce the number of files.
**Expected behavior**
Ideally soon after a tablet is compacted to have less than the max files for
scan it would be readable on a scan server.
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