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https://issues.apache.org/jira/browse/BOOKKEEPER-878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15065117#comment-15065117
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Sijie Guo commented on BOOKKEEPER-878:
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> actually I tested that even dropping all the ledgers it is not possibile to
> switch because the Bookie does not boot if I change the LedgerManagerFactory
it has to change the LedgerManagerFactory.class recorded in zookeeper.
> use wrote "This requires a bit code change to allow HierarchicalLedgerManager
> to read ledgers that were already created by FlatLedgerManager.", so a new
> implementation and release (probabily 4.3.3) is needed ?
yes. I needed to add a bit code to allow a smooth upgrade. and that requires a
new release 4.3.3. does that work for you? I am starting the code change.
> verify switching FlatLedgerManager to HierarchicalLedgerManager
> ---------------------------------------------------------------
>
> Key: BOOKKEEPER-878
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-878
> Project: Bookkeeper
> Issue Type: Task
> Reporter: Sijie Guo
> Assignee: Sijie Guo
>
> after BOOKKEEPER-438 is in, it is possible to switch FlatLedgerManager to
> HierarchicalLedgerManager.
> - we need to verify whether it works
> - add test cases to cover these steps
> - documentation about the steps
> if this is verified, port BOOKKEEPER-438 back to 4.3.* branch to make it
> available.
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