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https://issues.apache.org/jira/browse/HBASE-18109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16037455#comment-16037455
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stack commented on HBASE-18109:
-------------------------------
Excellent.
bq. For ProcedureExecutor, ServerProcedure will always be executed before
TableProcedure.
Yes. After reading your note, priority on Table would be the way to go at least
at first till we have more need of priority on Procedure. Your comments sent
me back to the MasterProcedureScheduler. It already has notion of table
priority and will schedule meta and system tables Procedures more frequently
than it does user-space tables. There is config which allows you play w/ the
scheduling so you can do hbase:meta runs more frequently. Then there are system
tables and then user tables. Would need to make it so can stamp region server
group tables as system table and then perhaps another tier for the
[~yangzhe1991] table-type.
So, on your list, I'd say lets not bother with item #1 (priority on procedure)
until we have an explicit need.
On #2, sorting before submit, we should spend some time and figure what is
wrong w/ current scheduler... is it not favoring system tables?
On #3, yeah, need to expose means of setting priority and probably introduce a
new tier, the "[~yangzhe1991] Tier" where it is neither system nor user-space
table (ACL perhaps and RSGroups and backup/restore support tables could go into
this category....)
> Assign system tables first (priority)
> -------------------------------------
>
> Key: HBASE-18109
> URL: https://issues.apache.org/jira/browse/HBASE-18109
> Project: HBase
> Issue Type: Sub-task
> Components: Region Assignment
> Affects Versions: 2.0.0
> Reporter: stack
> Assignee: Yi Liang
> Priority: Critical
> Fix For: 2.0.0
>
> Attachments: HBASE-18109-V1.patch
>
>
> Need this for stuff like the RSGroup table, etc. Assign these ahead of
> user-space regions.
> From 'Handle sys table assignment first (e.g. acl, namespace, rsgroup);
> currently only hbase:meta is first.' of
> https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.oefcyphs0v0x
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