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https://issues.apache.org/jira/browse/ZOOKEEPER-1427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Patrick Hunt updated ZOOKEEPER-1427:
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Attachment: ZOOKEEPER-1427.patch
> Writing to local files is done non-atomically
> ---------------------------------------------
>
> Key: ZOOKEEPER-1427
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1427
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.4.3
> Reporter: Todd Lipcon
> Assignee: Patrick Hunt
> Priority: Critical
> Fix For: 3.4.4, 3.5.0
>
> Attachments: ZOOKEEPER-1427.patch, ZOOKEEPER-1427.patch,
> ZOOKEEPER-1427.patch, ZOOKEEPER-1427_br34.patch, ZOOKEEPER-1427_br34.patch,
> ZOOKEEPER-1427_br34.patch
>
>
> Currently, the writeLongToFile() function opens the file for truncate, writes
> the new data, syncs, and then closes. If the process crashes after opening
> the file but before writing the new data, the file may be left empty, causing
> ZK to "forget" an earlier promise. Instead, it should use RandomAccessFile to
> avoid truncating.
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