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https://issues.apache.org/jira/browse/BOOKKEEPER-1096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sijie Guo resolved BOOKKEEPER-1096.
-----------------------------------
Resolution: Fixed
Fix Version/s: 4.5.0
Issue resolved by merging pull request 186
[https://github.com/apache/bookkeeper/pull/186]
{noformat}
commit 07852d35856dca232450135913090bac27b29abe
Author: Charan Reddy Guttapalem <[email protected]>
AuthorDate: Mon Jun 12 08:20:53 2017 -0700
Commit: Sijie Guo <[email protected]>
CommitDate: Mon Jun 12 08:20:53 2017 -0700
BOOKKEEPER-1096: recursive znode delete
When ledger is deleted, along with leaf node
all the eligible branch nodes should be
deleted in ZooKeeper.
Author: Charan Reddy Guttapalem <[email protected]>
Reviewers: Sijie Guo <[email protected]>
Closes #186 from reddycharan/recursiveznodedelete
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> When ledger is deleted, along with leaf node all the eligible branch nodes
> also should be deleted in ZooKeeper.
> ---------------------------------------------------------------------------------------------------------------
>
> Key: BOOKKEEPER-1096
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-1096
> Project: Bookkeeper
> Issue Type: Improvement
> Reporter: Charan Reddy Guttapalem
> Assignee: Charan Reddy Guttapalem
> Fix For: 4.5.0
>
>
> Currently when we delete a ledger, we delete just the leaf node in the ZK but
> we ignore about the branch nodes. This is ok for FlatLedgerManager, but for
> HierarchicalLedgerManagers, especially for LongHierarchicalLedgerManager, the
> number of internal nodes gets blown up over time and we would get into ZK
> capacity limitations. When ZK reaches the capacity limits, it will manifest
> in very severe performance and stability issues of cluster. So for
> HierarchicalLedgerManagers, when we delete a ledger we should optimistically
> recursively delete the parent znodes as well if they don’t have anymore child
> znodes.
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