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https://issues.apache.org/jira/browse/BOOKKEEPER-553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13625004#comment-13625004
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Sijie Guo commented on BOOKKEEPER-553:
--------------------------------------
BOOKKEEPER-590 is there to address the problem we might encounter using
original SCAN-AND-COMPARE algorithm. as my comment in BOOKKEEPER-590, it would
be better to provide another SCAN-AND-COMPARE algorithm rather than just remove
the original one. it looks like we could have an interface in LedgerManager
called #getGarbageCollector, which returns a GarbageCollector used by this
ledger manager to do garbage collecting. so for the ledger manager here we
could use the new SCAN-AND-COMPARE algorithm introduced in BOOKKEEPER-590.
> 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, BOOKKEEPER-553.patch,
> BOOKKEEPER-553.patch, 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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