Sergey Edunov created GIRAPH-1076:
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Summary: 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
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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