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Posted to dev@zookeeper.apache.org by "Jacky007 (JIRA)" <ji...@apache.org> on 2013/03/21 15:27:15 UTC

[jira] [Created] (ZOOKEEPER-1674) There is no need to reload database cross leader election

Jacky007 created ZOOKEEPER-1674:
-----------------------------------

             Summary: There is no need to reload database cross 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 code 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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