keith-turner commented on PR #6168:
URL: https://github.com/apache/accumulo/pull/6168#issuecomment-4001191655
Did some testing on a single machine using uno. Found I can start multiple
managers with the following command.
```
ACCUMULO_CLUSTER_ARG=5 accumulo-service manager start
```
Found one bug during this testing where the fate operation that commits a
compaction was not generating a notification. Fixed that in 365b833. Other
than that, the testing went well. Running a user compaction from the shell for
a table with a single tablet takes 2 seconds. Seems the most time is spent
waiting for the compactor to pick up a job. For this simple test saw the
following in the logs.
1. Seeded a fate operation to drive the user compaction. Saw in the logs
it notified the remote manager assigned that range of the fate table.
2. The fate operation started and wrote to the metadata table that the
tablet needs compaction. Saw in the logs it notified the TGW via a RPC to the
primary manager
3. The TGW saw the metadata entrry and queued a compaction job
4. Compactor eventually ran the job and seeded a fate operation to commit
it. Saw in the logs it notified the remote manager assigned that range of the
fate table.
5. The fate operation to commit ran
6. The fate operation driving the user compaction finished.
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