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https://issues.apache.org/jira/browse/ZOOKEEPER-1674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13779283#comment-13779283
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Thawan Kooburat commented on ZOOKEEPER-1674:
--------------------------------------------
Internally, we are working on this one at the moment. We are trying to fix this
issue without relying on or fixing ZOOKEEPER-1549, so this patch won't be too
large or complicate.
> There is no need to clear & load the database across leader election
> --------------------------------------------------------------------
>
> Key: ZOOKEEPER-1674
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1674
> Project: ZooKeeper
> Issue Type: Improvement
> Reporter: Jacky007
>
> It is interesting to notice the piece of codes in QuorumPeer.java
> /* ZKDatabase is a top level member of quorumpeer
> * which will be used in all the zookeeperservers
> * instantiated later. Also, it is created once on
> * bootup and only thrown away in case of a truncate
> * message from the leader
> */
> private ZKDatabase zkDb;
> It is introduced by ZOOKEEPER-596. Now, we just drop the database every
> leader election.
> We can keep it safely with ZOOKEEPER-1549.
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