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https://issues.apache.org/jira/browse/BOOKKEEPER-126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13527422#comment-13527422
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Rakesh R commented on BOOKKEEPER-126:
-------------------------------------

Hi Flavio,

I'd like to add few more and hope the following will help us to give more 
clarity/conclusion. 

This JIRA has helped us to initiate discussion and covered the following cases:
1) ledger entry failures during flushing/addEntry as part of BOOKKEEPER-199.
2) bookie failures will initiate re-replication and will be recovered the 
ledger entries by autorecovery process BOOKKEEPER-237.

There could be an area of improvement for handling "disk failures"(this is also 
another kind of data corruption). Say we have few closed ledgers which is 
present in disk1 and this disk got failed. Presently if this happens admin has 
option to shutdown the bookie and inturn autorecovery would start 
re-replication. But can we think of an improvement of (bookie)self disk 
scanning and a healing mechanism.

Whats your opinion?

-Rakesh
                
> EntryLogger doesn't detect when one of it's logfiles is corrupt
> ---------------------------------------------------------------
>
>                 Key: BOOKKEEPER-126
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-126
>             Project: Bookkeeper
>          Issue Type: Bug
>            Reporter: Ivan Kelly
>            Priority: Blocker
>             Fix For: 4.2.0
>
>
> If an entry log is corrupt, the bookie will ignore any entries past the 
> corruption. Quorum writes stops this being a problem at the moment, but we 
> should detect corruptions like this and rereplicate if necessary.

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