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https://issues.apache.org/jira/browse/BOOKKEEPER-363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13924144#comment-13924144
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Hudson commented on BOOKKEEPER-363:
-----------------------------------
SUCCESS: Integrated in bookkeeper-trunk #575 (See
[https://builds.apache.org/job/bookkeeper-trunk/575/])
BOOKKEEPER-363: Re-distributing topics among newly added hubs. (aniruddha via
ivank) (ivank: rev 1575338)
* /zookeeper/bookkeeper/trunk/CHANGES.txt
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/common/ServerConfiguration.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/topics/AbstractTopicManager.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/topics/HubLoad.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/topics/HubServerManager.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/topics/MMTopicManager.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/topics/TopicBasedLoadShedder.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/topics/TopicManager.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/topics/ZkHubServerManager.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/main/java/org/apache/hedwig/server/topics/ZkTopicManager.java
*
/zookeeper/bookkeeper/trunk/hedwig-server/src/test/java/org/apache/hedwig/server/topics/TestTopicBasedLoadShedder.java
> Re-distributing topics among newly added hubs.
> ----------------------------------------------
>
> Key: BOOKKEEPER-363
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-363
> Project: Bookkeeper
> Issue Type: Bug
> Components: hedwig-server
> Affects Versions: 4.2.0
> Reporter: Aniruddha
> Assignee: Aniruddha
> Fix For: 4.3.0
>
> Attachments: BK-363.patch, BK-363.patch.v2, BOOKKEEPER-363.diff
>
>
> When a new hub is added to an already existing hedwig cluster, that hub
> should pick up some of the topics. Currently the mechanism hedwig provides is
> to configure the time for which a topic is retained. A better approach might
> be to run a re-balancer thread that periodically checks if topics are
> distributed evenly among hubs and if not, releases some topics to balance the
> load.
> https://reviews.apache.org/r/6700/
> There is a race condition while updating load as mentioned in the comments
> and that is not handled in this review.
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