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Posted to dev@zookeeper.apache.org by "Michael Han (JIRA)" <ji...@apache.org> on 2017/09/11 20:46:00 UTC
[jira] [Updated] (ZOOKEEPER-2349) Update documentation for
snapCount
[ https://issues.apache.org/jira/browse/ZOOKEEPER-2349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Han updated ZOOKEEPER-2349:
-----------------------------------
Fix Version/s: 3.4.11
3.5.4
> Update documentation for snapCount
> ----------------------------------
>
> Key: ZOOKEEPER-2349
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2349
> Project: ZooKeeper
> Issue Type: Bug
> Components: documentation
> Reporter: Raghavendra Prabhu
> Priority: Minor
> Fix For: 3.5.4, 3.6.0, 3.4.11
>
> Attachments: ZOOKEEPER-2349.patch
>
>
> The documentation states that
> {code}
> ZooKeeper logs transactions to a transaction
> log. After snapCount transactions are written to a log
> file a snapshot is started and a new transaction log
> file is created. The default snapCount is
> 100,000.
> {code}
> However, in implementation, snapshotting is done when logCount is somwhere in (snapCount/2, snapCount+1], based on the limit set at runtime:
> {code}
> if (logCount > (snapCount / 2 + randRoll)) {
> {code}
> as in
> https://github.com/apache/zookeeper/blob/trunk/src/java/main/org/apache/zookeeper/server/SyncRequestProcessor.java#L124
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