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https://issues.apache.org/jira/browse/BOOKKEEPER-553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jiannan Wang updated BOOKKEEPER-553:
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Attachment: BOOKKEEPER-553.patch
Attach a zookeeper-based radix tree ledger manager implementation.
Please notice that there is an annoying problem for this implementation: some
inner nodes need to be pre-created when creating metadata for large ledger id,
and the corresponding ledger id to these pre-created inner nodes cannot be used
anymore which waste some ledger ids.
And since we've removed the order guarantee in BOOKKEEPER-590, we can now adopt
hierarchical mechanism. But my concern on hierarchical structure is it may
still possible to hold too many children in some nodes in worse case.
> New LedgerManager for 64 Bits Ledger ID Management in ZooKeeper
> ---------------------------------------------------------------
>
> Key: BOOKKEEPER-553
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-553
> Project: Bookkeeper
> Issue Type: Sub-task
> Components: bookkeeper-server, hedwig-server
> Reporter: Jiannan Wang
> Assignee: Jiannan Wang
> Fix For: 4.3.0
>
> Attachments: BOOKKEEPER-553.patch
>
>
> Once we extend the ledger id space to 64 bits, the 2-4-4 ledger id partition
> (see HierarchicalLedgerManager) is not suitable any more. So we need a new
> LedgerManager for 64 bits ledger id management in ZooKeeper.
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