[Sablevm-developer] SableVM hangs during database connection

[Roman K. <ro...@on...>]

Hi list,

I found another issue, this time related to a database connection with
MySQL. During sending an update, the hole connection seems to hang
infinitely. I waited >10minutes, which should me more than enough. As
far as I worked this out, the issue seems to be in some native code.
Here is the stacktrace from CTRL+\:

(PlainSocketImpl.java:-1)  gnu/java/net/PlainSocketImpl.read  n
(PlainSocketImpl.java:431) 
gnu/java/net/PlainSocketImpl$SocketInputStream.read 
(FilterInputStream.java:189)  java/io/FilterInputStream.read
(BufferedInputStream.java:370)  java/io/BufferedInputStream.refill
(BufferedInputStream.java:231)  java/io/BufferedInputStream.read
(MysqlIO.java:1399)  com/mysql/jdbc/MysqlIO.reuseAndReadPacket
(MysqlIO.java:1775)  com/mysql/jdbc/MysqlIO.checkErrorPacket
(MysqlIO.java:1020)  com/mysql/jdbc/MysqlIO.sendCommand
(MysqlIO.java:1109)  com/mysql/jdbc/MysqlIO.sqlQueryDirect
(Connection.java:2030)  com/mysql/jdbc/Connection.execSQL
(PreparedStatement.java:1750) 
com/mysql/jdbc/PreparedStatement.executeUpdate
(PreparedStatement.java:1596) 
com/mysql/jdbc/PreparedStatement.executeUpdate
(JDBCStorage.java:138)  com/knowledgetracking/JDBCStorage.storeXML
(NBEngine.java:78)  com/knowledgetracking/nb/NBEngine.learn
(NBEngine.java:37)  com/knowledgetracking/nb/NBEngine.learn
(learn.java:29)  com/knowledgetracking/cli/learn.invoke
(learn.java:45)  com/knowledgetracking/cli/learn.invoke
(Method.java:-1)  java/lang/reflect/Method.invokeNative  n
(Method.java:556)  java/lang/reflect/Method.invoke
((null):-1)  bsh/Reflect.invokeOnMethod
((null):-1)  bsh/Reflect.invokeStaticMethod
((null):-1)  bsh/Reflect.invokeCompiledCommand
((null):-1)  bsh/Name.invokeLocalMethod
((null):-1)  bsh/Name.invokeMethod
((null):-1)  bsh/BSHMethodInvocation.eval
((null):-1)  bsh/BSHPrimaryExpression.eval
((null):-1)  bsh/BSHPrimaryExpression.eval
((null):-1)  bsh/Interpreter.eval
((null):-1)  bsh/Interpreter.source
((null):-1)  bsh/Interpreter.main
(VirtualMachine.java:-1)  java/lang/VirtualMachine.invokeMain  n
(VirtualMachine.java:92)  java/lang/VirtualMachine.main

I'm trying to put together a simple test case to make this reproducible.
Is there any more information I can send (like a stacktrace of the
native code-> I don't know how to get this)?

Cheers, Roman