Broken Pipe with java driver 4.1.10

[nicogiard]

Hi,

I'm using server 3.1.14 and java driver 4.1.10 and i got an issue when the server shutdown when a request is sent.

When i try to execute this code :

try {
    users = ArangoDB.db().query("FOR u IN User RETURN u", new MapBuilder().get(), null, User.class).asListRemaining();
} catch (ArangoDBException e) {
    Logger.error(e, "error : %s", e.getMessage())
}

Here is a StackTrace i got :

play.exceptions.JavaExecutionException: java.net.SocketException: Relais brisé (pipe)
	at play.mvc.ActionInvoker.invoke(ActionInvoker.java:231)
	at Invocation.HTTP Request(Play!)
Caused by: java.lang.RuntimeException: java.net.SocketException: Relais brisé (pipe)
	at com.arangodb.internal.velocystream.Connection.writeIntern(Connection.java:212)
	at com.arangodb.internal.velocystream.ConnectionSync.write(ConnectionSync.java:85)
	at com.arangodb.internal.velocystream.CommunicationSync.send(CommunicationSync.java:124)
	at com.arangodb.internal.velocystream.CommunicationSync.execute(CommunicationSync.java:108)
	at com.arangodb.internal.velocystream.CommunicationSync.authenticate(CommunicationSync.java:129)
	at com.arangodb.internal.velocystream.Communication.connect(Communication.java:79)
	at com.arangodb.internal.velocystream.CommunicationSync.execute(CommunicationSync.java:105)
	at com.arangodb.internal.velocystream.CommunicationSync.execute(CommunicationSync.java:1)
	at com.arangodb.internal.ArangoExecutorSync.execute(ArangoExecutorSync.java:58)
	at com.arangodb.internal.ArangoExecutorSync.execute(ArangoExecutorSync.java:47)
	at com.arangodb.ArangoDatabase.query(ArangoDatabase.java:237)
	at controllers.Application.index(Application.java:16)
	at play.mvc.ActionInvoker.invokeWithContinuation(ActionInvoker.java:544)
	at play.mvc.ActionInvoker.invoke(ActionInvoker.java:494)
	at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:489)
	at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:458)
	at play.mvc.ActionInvoker.invoke(ActionInvoker.java:162)
	... 1 more
Caused by: java.net.SocketException: Relais brisé (pipe)
	at java.net.SocketOutputStream.socketWrite0(Native Method)
	at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
	at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
	at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
	at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
	at com.arangodb.internal.velocystream.Connection.writeIntern(Connection.java:210)
	... 17 more

After a little digging, com.arangodb.internal.velocystream.Connection.writeIntern is the only method that throws directly a RuntimeException.
Is there a reason for such a 'feature', or do you think it can be an ArangoDBException ?

because this code

try {
    users = ArangoDB.db().query("FOR u IN User RETURN u", new MapBuilder().get(), null, User.class).asListRemaining();
} catch (ArangoDBException | RuntimeException e) {
    Logger.error(e, "error : %s", e.getMessage());
}

is absurd due to the inheritance beetwen ArangoDBException and RuntimeException

Am i completely wrong or is there a misunderstanding ?
Thanks

[mvollmary]

Thanks for reporting.
Fixed it for version 4.1.11 which will be available within the next week. You can already use it with 4.1.11-SNAPSHOT.

[nicogiard]

Great! Thanks a lot