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https://issues.apache.org/jira/browse/HBASE-9775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13797251#comment-13797251
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Enis Soztutar commented on HBASE-9775:
--------------------------------------

I think as a mental exercise to validate the new design, we should think about 
the cases for the following issues opened recently so that we can ensure that 
these classes of problems are eliminated: 

- HBASE-8724 Failed region split is not handled correctly by AM
- HBASE-8721 meta assignment did not timeout
- HBASE-9696 Master recovery ignores online merge znode
- HBASE-9777 Two consecutive RS crashes could lead to their SSH stepping on 
each other's toes and cause master abort
- HBASE-9773 Master aborted when hbck asked the master to assign a region that 
was already online
- HBASE-9525 "Move" region right after a region split is dangerous
- HBASE-9514 Prevent region from assigning before log splitting is done
- HBASE-9480 Regions are unexpectedly made offline in certain failure conditions
- HBASE-9387 Region could get lost during assignment

> Client write path perf issues
> -----------------------------
>
>                 Key: HBASE-9775
>                 URL: https://issues.apache.org/jira/browse/HBASE-9775
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 0.96.0
>            Reporter: Elliott Clark
>            Priority: Critical
>         Attachments: Charts Search   Cloudera Manager - ITBLL.png, Charts 
> Search   Cloudera Manager.png, job_run.log, short_ycsb.png, 
> ycsb_insert_94_vs_96.png
>
>
> Testing on larger clusters has not had the desired throughput increases.



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