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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12577) Disable distributed log replay by default
Date Tue, 25 Nov 2014 19:03:13 GMT
Enis Soztutar created HBASE-12577:

             Summary: Disable distributed log replay by default
                 Key: HBASE-12577
                 URL: https://issues.apache.org/jira/browse/HBASE-12577
             Project: HBase
          Issue Type: Sub-task
            Reporter: Enis Soztutar
            Assignee: Jeffrey Zhong
            Priority: Critical
             Fix For: 0.99.2

Distributed log replay is an awesome feature, but due of HBASE-11094, the rolling upgrade
story from 0.98 is hard to explain / enforce. 

The fix for HBASE-11094 only went into 0.98.4, meaning rolling upgrades from 0.98.4- might
lose data during the upgrade. 

I feel no matter how much documentation / warning we do, we cannot prevent users from doing
rolling upgrades from 0.98.4- to 1.0. And we do not want to inconvenience the user by requiring
a two step rolling upgrade.  

Thus I think we should disable dist log replay for 1.0, and re-enable it again for 1.1 (if
rolling upgrade from 0.98 is not supported). 

ie. undo: HBASE-10888

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