keith-turner commented on PR #3896:
URL: https://github.com/apache/accumulo/pull/3896#issuecomment-1781817606
Looking at this, I was thinking that the set of servers to shutdown could
percolate through the tablet group watchers. Not sure if it would work. Was
thinking of something like the following.
* User TGW uses the managers set of servers to shutdown
* Metadata TGW uses the User TGW set of servers to shutdown
* Root TGW uses the Metadata TGW set of servers to shutdown
When a TGW does a full metadata scan it does the following.
1. tmpshutdownServers = dependentWatcher.getServersToShutdown()
2. pass tmpshutdownServers to tablet mgmt iterator
3. do full scan of metadata and remove any servers seen from
tmpshutdownServers
4. set serversToShutdownForParent=tmpshutdownServers
Thinking that TGW would have a method named `getServersToShutdown()` and
that it would return `serversToShutdownForParent`. Also
`serversToShutdownForParent` would initially be the empty set and would only be
set after TGW does a full scan.
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