Bugs item #2812963, was opened at 2009-06-26 22:18
Message generated for change (Comment added) made by mr-meltdown
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Category: SQL/JDBC
Group: SQL "stable"
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Gábor (feherg)
Assigned to: Fabian (mr-meltdown)
Summary: JDBC connection hangs if result is too long
Initial Comment:
Operating System: openSUSE 11.1
Compiler: gcc-4.3-34.243
Parser tools: package lex is not installed; flex-2.5.35-43.23; package yacc is
not installed; bison-2.3-127.26
More tools: autoconf-2.63-1.136; automake-1.10.1-4.284; libtool-2.2.6-1.35
MonetDB version: May2009 from source (with a recent head checkout of
buildtools, and binary distribution of JDBC)
Loaded MonetDB modules: sql; xml; batxml; geom;
Java 1.5.0 is used.
It seems to me that if a large number of bytes is received through a JDBC
connection, a "ResultSet is closed!" exception is thrown:
Exception in thread "main" java.sql.SQLException: ResultSet is closed!
at nl.cwi.monetdb.jdbc.MonetResultSet.absolute(MonetResultSet.java:181)
at nl.cwi.monetdb.jdbc.MonetResultSet.relative(MonetResultSet.java:2024)
at nl.cwi.monetdb.jdbc.MonetResultSet.next(MonetResultSet.java:1991)
at MonetJDBC.query(MonetJDBC.java:76)
at MonetJDBC.main(MonetJDBC.java:31)
I can reproduce this with my atteched java program. First it generates a table
with 3000 rows, and then issues a query on it...
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>Comment By: Fabian (mr-meltdown)
Date: 2009-09-23 13:49
Message:
Hi Gábor,
I'm sorry not to have noticed this bug (and your program to reproduce it)
sooner! I will study your example code soon and hopefully fix this bug.
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