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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-16999) [Master] Inform RegionServers on size quota violations
Date Tue, 22 Nov 2016 20:46:58 GMT

     [ https://issues.apache.org/jira/browse/HBASE-16999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Josh Elser updated HBASE-16999:
    Attachment: HBASE-16999-HBASE-16961.001.patch

.001 Landing a patch for now (need to get outstanding patches rebased on the feature branch).

For an initial implementation, I went the easy route of just using a column in the {{hbase:quota}}
table to persist violation state for a table. The Master is the only entity to update this
table and RegionServers periodically (configurable) read the quota table and update their
current state. This results in a very simple implementation to understand with similar bounds
on reaction time to quota violation policy changes.

> [Master] Inform RegionServers on size quota violations
> ------------------------------------------------------
>                 Key: HBASE-16999
>                 URL: https://issues.apache.org/jira/browse/HBASE-16999
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>         Attachments: HBASE-16999-HBASE-16961.001.patch
> The Master, after computing the total usage across all regionservers, needs to inform
the RegionServers about tables that need to change violation policy enforcement (enable or
disable enforcement).
> RPC, ZK, or ProcV2's notification bus are some examples of ways this could be implemented.

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