SFTP related processes do not die if parent process dies.

Question

Java Version: 1.4.2_05
JRE: build 1.4.2_05-b04.
Running on Solaris 9.
Problem:
If the process using the SFTP API dies, the children processes created by the SFTP API do not end.
A side effect of this is that all the sockets the orginal parent had remain open as the child processes inherited them.
The JVM does close STDIN/STDOUT/STDERR to the child if the JVM has less than 1024 filedesriptors open at the time of the Runtime.exec() command.
However, if the JVM has more than 1024 filedesriptors open at the time of the Runtime.exec command the child will
a) inherit all filedescriptors above 1024
b) the STDIN/STDOU/STDERR towards the child is not closed when the JVM exits.
Has anyone seen this before?
I heard this maybe fixed in JDK 1.5. Is this true? Is there a fix on this in 1.4.2?
Your comments are appreciated?

Answer 1

I found the following in http://docs.sun.com/app/docs/doc/816-4555/rfsrefer-134?l=ja&a=view :
In this situation, the SIGLOST signal is posted to the process. The default action for the SIGLOST signal is to terminate the process.
For you to recover from this state, you must restart any applications that had files open at the time of the failure. Note that the following can occur.
- Some processes that did not reopen the file could receive I/O errors.
- Other processes that did reopen the file, or performed the open operation after the recovery failure, are able to access the file without any problems.
Thus, some processes can access a particular file while other processes cannot.
Edited by: Arvind_Srinivasan on Dec 10, 2009 12:33 AM