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https://issues.apache.org/jira/browse/HBASE-13212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14693146#comment-14693146
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Enis Soztutar commented on HBASE-13212:
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bq. I don't think the table operation should have to take the NS lock. that can
be done down at the scheduling level (procedure queue)
Sure. If we change the per-table level queue into being a hierarchical queue of
NS -> table, then it would work.
bq. Note: due to low frequency of deleting namespace, the chance that we see
this race condition is very low.
Agreed. It is not high priority.
> Procedure V2 - master Create/Modify/Delete namespace
> ----------------------------------------------------
>
> Key: HBASE-13212
> URL: https://issues.apache.org/jira/browse/HBASE-13212
> Project: HBase
> Issue Type: Sub-task
> Components: master
> Affects Versions: 2.0.0
> Reporter: Stephen Yuan Jiang
> Assignee: Stephen Yuan Jiang
> Labels: reliability
> Attachments: HBASE-13212.v1-master.patch, HBASE-13212.v2-master.patch
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> master side, part of HBASE-12439
> starts up the procedure executor on the master
> and replaces the create/modify/delete namespace handlers with the procedure
> version.
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