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https://issues.apache.org/jira/browse/HBASE-11889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14122437#comment-14122437
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stack commented on HBASE-11889:
-------------------------------

Bummer!  Could we not release note it saying if you want to rolling upgrade 
from a version before 0.98.4, that you should set your config to turn off DLR?

> Turn distributedLogReplay off by default for HBase1.0
> -----------------------------------------------------
>
>                 Key: HBASE-11889
>                 URL: https://issues.apache.org/jira/browse/HBASE-11889
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.99.0
>            Reporter: Jeffrey Zhong
>
> The reason is that we want to support rolling upgrade while 
> distributedLogReplay supports rolling upgrade only since 
> hbase0.98.4(HBASE-11094). So keep it off by default for 1.0 because we want 
> to rolling upgrade from 0.98.0.



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