[jira] [Reopened] (HBASE-24718) Generic NamedQueue framework for recent in-memory history (refactor slowlog)

["Michael Stack (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-24718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Stack reopened HBASE-24718:
-----------------------------------

This patch causes below two tests to fail 100% of the time on branch-2. Reverted from branch-2 for now. Reopening. Thanks [~vjasani]

!Screen Shot 2020-07-20 at 2.50.34 PM.png!

> Generic NamedQueue framework for recent in-memory history (refactor slowlog)
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-24718
>                 URL: https://issues.apache.org/jira/browse/HBASE-24718
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Viraj Jasani
>            Assignee: Viraj Jasani
>            Priority: Major
>             Fix For: 3.0.0-alpha-1, 2.4.0
>
>         Attachments: Screen Shot 2020-07-20 at 2.50.34 PM.png
>
>
> As per the discussion on parent jira, we should come up with named queue (online ring buffer) to serve recent history for multiple use-cases like slowlog, balancer decision, other region activities e.g flush, compaction, split, merge etc.
> Since we already have slow/large rpc logs in ring buffer (HBASE-22978), as part of this Jira, the proposal is to refactor slowlog provider to get generic payload for ring buffer and based on event type (slow_log is the only one for now), we can have separate internal in-memory queues.
> After this refactor, it should be relatively simpler to use the same framework and create more cases like parent Jira (balancer decision in ring buffer).



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