Displaying 2 results from an estimated 2 matches for "hawq".
Did you mean:
hawk
2016 Aug 02
1
[R] Fwd: Help: malloc/free deadlock in unsafe signal handler 'Rf_onsigusr1'
...t be done in a signal handler.
That is all these handlers are intended for. If you are using them
programatically you should rethink what you are doing. If you explain
what you are trying to do you might get some help with that.
Best,
luke
On Tue, 2 Aug 2016, Ming Li wrote:
> Thanks luke.?cc hawq dev team.
> I sent this email to?R-devel 2 days before forwarding it to R-help, but no
> one reply.
>
> Is there any workaround? When were?SIGUSR1 and SIGUSR2?sent in R? Or maybe
> we should move all operations not too emergency out of signal handler?
>
> Thanks.
>
>...
2016 Jul 28
2
Help: malloc/free deadlock in unsafe signal handler 'Rf_onsigusr1'
Hi all,
I am working on a bug, which running PLR on HAWQ. The process hung and
can't be terminated.
>From my investigation, it seems signal handler 'Rf_onsigusr1' trigger a
malloc/free deadlock.
The calling stack is below.
Thread 1 (Thread 0x7f4c93af48e0 (LWP 431263)):
#0 0x00007f4c9015805e in __lll_lock_wait_private () from /lib64/lib...