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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8450) Update hbase-default.xml and general recommendations to better suit current hw, h2, experience, etc.
Date Fri, 26 Apr 2013 22:40:18 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-8450:
-------------------------

    Attachment: 8450.txt

Here is a start:

Ups handlers to 100 from 10.

Removes the no longer referenced:

hbase.regionserver.nbreservationblocks
hbase.hash.type

Upps memstore.lowerlimit so it is close to higher limit making it 0.38 instead of 0.35 (high
limit is 0.40).

Make major compactions run once a week instead of every day.

Remove dfs.support.append -- it only brings on a complaint if present (there is a UI component
that also needs updating if this goes away).

What else can we do to improve basic defaults?
                
> Update hbase-default.xml and general recommendations to better suit current hw, h2, experience,
etc.
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-8450
>                 URL: https://issues.apache.org/jira/browse/HBASE-8450
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>            Priority: Critical
>             Fix For: 0.95.1
>
>         Attachments: 8450.txt
>
>
> This is a critical task we need to do before we release; review our defaults.
> On cursory review, there are configs in hbase-default.xml that no longer have matching
code; there are some that should be changed because we know better now and others that should
be amended because hardware and deploys are bigger than they used to be.
> We could also move stuff around so that the must-edit stuff is near the top (zk quorum
config. is mid-way down the page) and beef up the descriptions -- especially since these descriptions
shine through in the refguide.
> Lastly, I notice that our tgz does not "include" an hbase-default.xml other than the
one bundled up in the jar.  Maybe we should make it more accessible.

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