hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-18102) [SHELL] Purge commands that allow by-pass of Master; e.g. close of a region sent to regionserver explicitly
Date Wed, 24 May 2017 22:56:04 GMT
stack created HBASE-18102:
-----------------------------

             Summary: [SHELL] Purge commands that allow by-pass of Master; e.g. close of a
region sent to regionserver explicitly
                 Key: HBASE-18102
                 URL: https://issues.apache.org/jira/browse/HBASE-18102
             Project: HBase
          Issue Type: Sub-task
          Components: Operability, shell
            Reporter: stack
             Fix For: 2.0.0


In AMv2, if a RS is not aligned with Master notions of how the world is, then the Master will
kill the deviant RS (TODO: is forcing compliance via less radical means -- but that is how
it is currently).

The shell currently allows by-passing the Master to make cluster modifications such as our
being able to send a close directly to a RegionServer for it to execute locally. This facility
was used in the past to do fix-up when Master lost account of Region locations. In the new
regime, such mis-accounting should no longer happen and, should a user mistakenly do an explicit
close against a RS, the consequences will be more than the user bargained for; the Master
will shut down the RS as soon as it reports close of a Region the master thinks should be
open (No independence allowed!).

This issue is to review shell Region and Table manipulation commands to purge those that by-pass
Master or at least to add big warning.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message