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https://issues.apache.org/jira/browse/HBASE-17882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15958256#comment-15958256
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stack commented on HBASE-17882:
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Agreed. Concern is a new version being able to read old WALs. I've not looked
in a while. Would this be a problem?
> Why do the WalEdit implement the Writable interface
> ---------------------------------------------------
>
> Key: HBASE-17882
> URL: https://issues.apache.org/jira/browse/HBASE-17882
> Project: HBase
> Issue Type: Brainstorming
> Reporter: Chia-Ping Tsai
> Priority: Minor
>
> Do we have any use cases? (serialize/deserialize the WalEdit between mapper
> and reducer?) If not, we should make WalEdit not implement the Writable
> interface.
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