You are viewing a plain text version of this content. The canonical link for it is here.
Posted to notifications@accumulo.apache.org by "keith-turner (via GitHub)" <gi...@apache.org> on 2023/05/18 18:54:47 UTC
[GitHub] [accumulo] keith-turner opened a new issue, #3406: Revisit unassignment request mechanism introduced in #3382
keith-turner opened a new issue, #3406:
URL: https://github.com/apache/accumulo/issues/3406
In #3382 a quick hack was added to for requesting the manager to unassign a tablet that needed to be split. This code needs to be revisited. Either need to develop a new approach or improved the approach that was taken in #3382 to make it more robust. There are multiple TODOs in the code related to this.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@accumulo.apache.org.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
Re: [I] Revisit unassignment request mechanism introduced in #3382 [accumulo]
Posted by "dlmarion (via GitHub)" <gi...@apache.org>.
dlmarion commented on issue #3406:
URL: https://github.com/apache/accumulo/issues/3406#issuecomment-1766852931
@keith-turner - I think #3835 resolved this. That PR replaced the hack, and the TODOs referenced above are gone.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@accumulo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
Re: [I] Revisit unassignment request mechanism introduced in #3382 [accumulo]
Posted by "dlmarion (via GitHub)" <gi...@apache.org>.
dlmarion commented on issue #3406:
URL: https://github.com/apache/accumulo/issues/3406#issuecomment-1751049819
@keith-turner and I discussed a possible solution for this would to create a new method on the Manager Thrift API so that another process could request a Tablet to be unloaded for maintenance (split/merge). The new method would write an entry into the tablet metadata so that when the TabletMetadataIterator read the TabletMetadata for the Tablet it would return a unhosting state to the TabletGroupWatcher.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@accumulo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
[GitHub] [accumulo] keith-turner commented on issue #3406: Revisit unassignment request mechanism introduced in #3382
Posted by "keith-turner (via GitHub)" <gi...@apache.org>.
keith-turner commented on issue #3406:
URL: https://github.com/apache/accumulo/issues/3406#issuecomment-1553501516
The following are TODOs in the code related to this issue.
https://github.com/apache/accumulo/blob/808c0bb5cc28511da6b50676a34f1abf36b7d20c/server/manager/src/main/java/org/apache/accumulo/manager/split/SplitScanner.java#L35
https://github.com/apache/accumulo/blob/808c0bb5cc28511da6b50676a34f1abf36b7d20c/server/base/src/main/java/org/apache/accumulo/server/manager/state/CurrentState.java#L45
https://github.com/apache/accumulo/blob/808c0bb5cc28511da6b50676a34f1abf36b7d20c/server/base/src/main/java/org/apache/accumulo/server/manager/state/MetaDataTableScanner.java#L105
https://github.com/apache/accumulo/blob/808c0bb5cc28511da6b50676a34f1abf36b7d20c/server/manager/src/main/java/org/apache/accumulo/manager/Manager.java#L573
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@accumulo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
Re: [I] Revisit unassignment request mechanism introduced in #3382 [accumulo]
Posted by "keith-turner (via GitHub)" <gi...@apache.org>.
keith-turner commented on issue #3406:
URL: https://github.com/apache/accumulo/issues/3406#issuecomment-1751157496
The new metadata key could contain the fate transaction id. That allows concurrent FATE ops to remove their unassignment request independently. The hacky in memory map that does this currently tracks each FATE that wants a tablet unassigned independently.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@accumulo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
Re: [I] Revisit unassignment request mechanism introduced in #3382 [accumulo]
Posted by "keith-turner (via GitHub)" <gi...@apache.org>.
keith-turner commented on issue #3406:
URL: https://github.com/apache/accumulo/issues/3406#issuecomment-1751164711
> @keith-turner and I discussed a possible solution for this would to create a new method on the Manager Thrift API so that another process could request a Tablet to be unloaded for maintenance (split/merge). The new method would write an entry into the tablet metadata so that when the TabletMetadataIterator read the TabletMetadata for the Tablet it would return a unhosting state to the TabletGroupWatcher.
We also discussed that this change is a prerequisite for #3822 as it removes the reliance on FATE execution and the TGW being in the same process.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@accumulo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
Re: [I] Revisit unassignment request mechanism introduced in #3382 [accumulo]
Posted by "keith-turner (via GitHub)" <gi...@apache.org>.
keith-turner closed issue #3406: Revisit unassignment request mechanism introduced in #3382
URL: https://github.com/apache/accumulo/issues/3406
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@accumulo.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org