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https://issues.apache.org/jira/browse/BOOKKEEPER-1096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16047897#comment-16047897
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Hudson commented on BOOKKEEPER-1096:
------------------------------------
SUCCESS: Integrated in Jenkins build bookkeeper-master #1783 (See
[https://builds.apache.org/job/bookkeeper-master/1783/])
BOOKKEEPER-1096: recursive znode delete (sijie: rev
07852d35856dca232450135913090bac27b29abe)
* (edit)
bookkeeper-server/src/main/java/org/apache/bookkeeper/meta/AbstractZkLedgerManager.java
* (add)
bookkeeper-server/src/test/java/org/apache/bookkeeper/meta/LedgerMetadataCreationTest.java
* (edit)
bookkeeper-server/src/test/java/org/apache/bookkeeper/meta/LedgerManagerTestCase.java
* (add)
bookkeeper-server/src/test/java/org/apache/bookkeeper/util/TestZkUtils.java
* (edit) bookkeeper-server/src/main/java/org/apache/bookkeeper/util/ZkUtils.java
> 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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