compiling production jars with line number information

[Rick Hillegas <ri...@gmail.com>]

A long time ago, Kristian proposed that we compile the insane, 
production jars with line number information, but not full debug 
information. The idea would be to get more information out of production 
stack traces at the cost of increasing the size of the jar files. Users 
have renewed this discussion on 
https://issues.apache.org/jira/browse/DERBY-5543.

I have tried compiling the insane, production engine at debug level 
"lines,source". That is what is needed in order to coax line numbers out 
of stack traces. Here is what the engine jar weighs at various debug levels:

4.5M   full debug

3.7M   "lines,source"

3.2M   no debug

0.5M meg is a significant extra bloat on resource-constrained devices. 
Nevertheless, I think that the expense is worth paying in order to gain 
the benefit of more useful stack traces.

I recommend making this change. What are your thoughts?

Thanks,
-Rick

Re: compiling production jars with line number information

[Bryan Pendleton <bp...@gmail.com>]

> I have tried compiling the insane, production engine at debug level
> "lines,source".

> I think that the expense is worth paying in order to gain the
> benefit of more useful stack traces.

+1. Improved supportability and field diagnosis is a big benefit for me.

bryan