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https://issues.apache.org/jira/browse/BOOKKEEPER-152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13198709#comment-13198709
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Ivan Kelly commented on BOOKKEEPER-152:
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It appears that ReadLastConfirmedOp isn't actually correct. It duplicates code
from RecoverLedgerOp but doesn't check that all quorums have replied, just that
the number of responses is the same as quorum size. In practice, this isn't a
big issue, but the code for checking the last confirmed entry should be common,
so I'll merge them.
> Can't recover a ledger whose current ensemble contain failed bookie.
> --------------------------------------------------------------------
>
> Key: BOOKKEEPER-152
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-152
> Project: Bookkeeper
> Issue Type: Bug
> Components: bookkeeper-client
> Affects Versions: 4.0.0
> Reporter: Sijie Guo
> Fix For: 4.1.0
>
> Attachments: BK-152.draft.patch
>
>
> Suppose we have a unclosed ledger L, whose ensemble size is 2, quorum size is
> 2. the ledger's current ensemble is <bk1, bk2>.
> bk2 is crashed.
> we use recovery tool to recover entries in bk2. $
> bookkeeper-server/bin/bookkeeper org.apache.bookkeeper.tools.BookKeeperTools
> bk2
> recovery failed due to recovery tool can't open ledger L, since ledger L
> doesn't have enough quorum to readLastConfirmed entry.
> (asyncOpenLedgerNoRecovery)
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