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From "maoling (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-3352) Use LevelDB For Backend
Date Thu, 25 Apr 2019 02:51:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-3352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16825661#comment-16825661
] 

maoling commented on ZOOKEEPER-3352:
------------------------------------

[~belugabehr]

1.if we pick up a LSM one, we should really take care and test the issue.e.g: random read,write
amplification
2.IMO, a LMDB/B+tree one is more appropriate for the system like zk which is read-heavy and
it also have a good write perfermace.
       e.g https://github.com/lmdbjava/lmdbjava

> Use LevelDB For Backend
> -----------------------
>
>                 Key: ZOOKEEPER-3352
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3352
>             Project: ZooKeeper
>          Issue Type: New Feature
>          Components: server
>            Reporter: David Mollitor
>            Assignee: David Mollitor
>            Priority: Critical
>             Fix For: 4.0.0
>
>
> Use LevelDB for managing data stored in ZK (transaction logs and snapshots).
> https://stackoverflow.com/questions/6779669/does-leveldb-support-java



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