Ryan Fowler created CASSANDRA-6459:
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Summary: Concurrency issue in Directories.getOrCreate()
Key: CASSANDRA-6459
URL: https://issues.apache.org/jira/browse/CASSANDRA-6459
Project: Cassandra
Issue Type: Bug
Components: Core
Environment: 1.2 2.0
Reporter: Ryan Fowler
We're seeing an FSWriteError sometimes during repairs. I think it's because two
threads are calling Directories.getOrCreate() on the same directory at about
the same time. File.mkdirs() returns false if the directory already exists.
A patch is forthcoming.
Here's the exception we get:
ERROR 2013-12-06 09:31:45,217 [Thread-11051] CassandraDaemon Exception in
thread Thread[Thread-11051,5,main]
FSWriteError in /data-1/cassandra/data/RedDeerCollege/Binaries/backups
at org.apache.cassandra.db.Directories.getOrCreate(Directories.java:483)
at
org.apache.cassandra.db.Directories.getBackupsDirectory(Directories.java:242)
at
org.apache.cassandra.db.DataTracker.maybeIncrementallyBackup(DataTracker.java:165)
at org.apache.cassandra.db.DataTracker.addSSTables(DataTracker.java:237)
at
org.apache.cassandra.db.ColumnFamilyStore.addSSTables(ColumnFamilyStore.java:911)
at
org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSession.java:186)
at
org.apache.cassandra.streaming.IncomingStreamReader.read(IncomingStreamReader.java:138)
at
org.apache.cassandra.net.IncomingTcpConnection.stream(IncomingTcpConnection.java:238)
at
org.apache.cassandra.net.IncomingTcpConnection.handleStream(IncomingTcpConnection.java:178)
Someone else appears to have seen the same thing a while back:
Here's someone that's had a similar problem:
http://mail-archives.apache.org/mod_mbox/cassandra-user/201206.mbox/%[email protected]%3E
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