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https://issues.apache.org/jira/browse/HBASE-12577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14225023#comment-14225023
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Sean Busbey commented on HBASE-12577:
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+1, though I'd rather see the non-rolling-upgrade barrier move to 2.0.
> 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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