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https://issues.apache.org/jira/browse/GIRAPH-1076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Edunov updated GIRAPH-1076:
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Fix Version/s: 1.2.0
> Race condition in FileTxnSnapLog
> --------------------------------
>
> Key: GIRAPH-1076
> URL: https://issues.apache.org/jira/browse/GIRAPH-1076
> Project: Giraph
> Issue Type: Bug
> Reporter: Sergey Edunov
> Assignee: Sergey Edunov
> Fix For: 1.2.0
>
>
> org.apache.zookeeper.server.persistence.FileTxnSnapLog has a potential for
> race condition:
> if (!this.dataDir.exists()) {
> if (!this.dataDir.mkdirs()) {
> throw new IOException("Unable to create data directory "
> + this.dataDir);
> }
> }
> If two threads try to create FileTxnSnapLog simultaneously it can trigger
> IOException.
> We saw this happening in Giraph where FileTxnSnapLog is being created by
> PurgeTask created by DatadirCleanupManager and by
> InProcessZooKeeperRunner#runFromConfig
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