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https://issues.apache.org/jira/browse/BOOKKEEPER-257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13633650#comment-13633650
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Sijie Guo commented on BOOKKEEPER-257:
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[~jiannan] [~fpj] LedgerManager#asyncProcessLedgers is not exposed as an API 
for clients. Do you guys want to expose LedgerManager to application directly?
                
> Ability to list all ledgers
> ---------------------------
>
>                 Key: BOOKKEEPER-257
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-257
>             Project: Bookkeeper
>          Issue Type: New Feature
>            Reporter: Ivan Kelly
>             Fix For: 4.3.0
>
>
> When an application is using bookkeeper it must keep a copy of the ledger ids 
> it creates so that they can be used later, and once they are no longer 
> useful, deleted. However, in the case of a crash between ledger creation and 
> persisting the application copy of the id, the ledger will be dangling. 
> Therefore I propose we have the ability to get a list of all ledger ids, 
> which clients can use for garbage collection. However, I don't think it 
> should be part of the BookKeeper class, rather part of a new BookKeeperAdmin 
> class.

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