accumulo-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From mjwall <...@git.apache.org>
Subject [GitHub] accumulo issue #121: ACCUMULO-4353: Stabilize tablet assignment during trans...
Date Fri, 01 Jul 2016 21:24:53 GMT
Github user mjwall commented on the issue:

    https://github.com/apache/accumulo/pull/121
  
    @ShawnWalker I reviewed this and talked with @keith-turner some.  I imagine during a rolling
upgrade the process would be.
    
    - Stage the new install on the box
    - Run stop-here.sh
    - Reconfigure the node to use the new install
    - Run start-here.sh
    
    The stop-here.sh command has the master unload the tablets I think.  How will this patch
handle that case?
    
    When a tablet server is suspended, all queries will block right?  I see you are suspending
the metadata tablets too.  That will affect more than just a user queries though.  Bulk imports
trying to get hosted locations comes to mind.  I see you are not suspending the root tablet
though.
    
    I see you are storing the host and port in the metadata for a suspended tablet.  Sometimes
we have tservers come up with a different host or port.  In that case, I guess the tablets
will wait until the suspend duration to be reassigned.


---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastructure@apache.org or file a JIRA ticket
with INFRA.
---

Mime
View raw message