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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: 2.13.3
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Component/s: Connection Management
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None
Hello,
I've seen a following stack trace:
java.lang.IllegalStateException: open
at org.bson.util.Assertions.isTrue(Assertions.java:36)
at com.mongodb.DBPort.runCommand(DBPort.java:219)
at com.mongodb.DBPort.ensureOpen(DBPort.java:319)
at com.mongodb.DBPort.<init>(DBPort.java:113)
at com.mongodb.DBPort.<init>(DBPort.java:95)
at com.mongodb.DBPortFactory.create(DBPortFactory.java:28)
at com.mongodb.PooledConnectionProvider$ConnectionItemFactory.create(PooledConnectionProvider.java:186)
at com.mongodb.PooledConnectionProvider$ConnectionItemFactory.create(PooledConnectionProvider.java:183)
at com.mongodb.ConcurrentPool.createNewAndReleasePermitIfFailure(ConcurrentPool.java:150)
at com.mongodb.ConcurrentPool.get(ConcurrentPool.java:118)
at com.mongodb.PooledConnectionProvider.get(PooledConnectionProvider.java:79)
at com.mongodb.DefaultServer.getConnection(DefaultServer.java:61)
at com.mongodb.BaseCluster$WrappedServer.getConnection(BaseCluster.java:254)
....
I could not reproduce it, however I found a potential problem in DBPort.java:
do {
try {
_socket = _options.socketFactory.createSocket();
_socket.connect( _addr.getSocketAddress() , _options.connectTimeout );
_socket.setTcpNoDelay( ! USE_NAGLE );
_socket.setKeepAlive( _options.socketKeepAlive );
_socket.setSoTimeout( _options.socketTimeout );
_in = new BufferedInputStream( _socket.getInputStream() );
_out = _socket.getOutputStream();
successfullyConnected = true;
}
catch ( IOException e ){
close();
if (!_options.autoConnectRetry || (provider != null && !provider.hasWorked()))
throw e;
long waitSoFar = System.currentTimeMillis() - start;
if (waitSoFar >= maxAutoConnectRetryTime)
throw e;
if (sleepTime + waitSoFar > maxAutoConnectRetryTime)
sleepTime = maxAutoConnectRetryTime - waitSoFar;
_logger.log(Level.WARNING, "Exception connecting to " + serverAddress().getHost() + ": " + e +
". Total wait time so far is " + waitSoFar + " ms. Will retry after sleeping for " + sleepTime + " ms.");
ThreadUtil.sleep(sleepTime);
sleepTime *= 2;
}
} while (!successfullyConnected);
If the first run of the loop results in an IOException, the DBPort is closed which sets the closed flag to true. However, If a subsequent run succeeds the flag is never reset which can cause the above stacktrace.
Is it a bug or am I missing something?