dlmarion opened a new pull request, #5531:
URL: https://github.com/apache/accumulo/pull/5531

   in the Manager to new columns in the root and metadata tables. The 
Manager.partitionMigrations method was changed to scan the root and metadata 
tables migration column to gather the current migrations. However, if the root 
and metadata tables are not hosted, then this scan will hang until the tablet 
locations can be resolved.
   
   ScanServerUpgrade11to12TestIT.testScanRefTableCreation has been failing 
since #5416 was merged. The test deletes the scanref table, shuts down the 
TabletServers and Manager, then restarts them. This leaves the root tablet in a 
state where it needs to perform recovery. The Manager.partitionMigrations 
method is called via the StatusThread, and it appears that the Manager starts 
up and the StatusThread gets hung trying to scan the root tablet (it's waiting 
for a location). Meanwhile, the root tablet can't be assigned a location 
because the Manager.tserverStatus map is not populated, which is done from the 
StatusThread as well.
   
   Also modified the IT to set the filesystem to the RawLocalFileSystem so that 
warnings about missing checksum files were not in the logs.


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