Major Description
We've started seeing an assert failing inside setup_random at line 537:
528 static void setup_random() 529 { 530 #ifndef _WIN32 // TODO: better seed 531 int seed; 532 int fd = open("/dev/urandom", O_RDONLY); 533 if (fd == -1) { 534 seed = getpid(); 535 } else { 536 int rc = read(fd, &seed, sizeof(seed)); 537 assert(rc == sizeof(seed)); 538 close(fd); 539 } 540 srandom(seed); 541 srand48(seed); 542 #endif
The core files show:
Program terminated with signal 6, Aborted.
#0 0x00007f9ff665a0d5 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#0 0x00007f9ff665a0d5 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f9ff665d83b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007f9ff6652d9e in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#3 0x00007f9ff6652e42 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
#4 0x00007f9ff8e4070a in setup_random () at src/zookeeper.c:476
#5 0x00007f9ff8e40d76 in resolve_hosts (zh=0x7f9fe14de400, hosts_in=0x7f9fd700f400 "10.26.200.6:2181,10.26.200.7:2181,10.26.200.8:2181", avec=0x7f9fd87fab60) at src/zookeeper.c:730
#6 0x00007f9ff8e40e87 in update_addrs (zh=0x7f9fe14de400) at src/zookeeper.c:801
#7 0x00007f9ff8e44176 in zookeeper_interest (zh=0x7f9fe14de400, fd=0x7f9fd87fac4c, interest=0x7f9fd87fac50, tv=0x7f9fd87fac80) at src/zookeeper.c:1980
#8 0x00007f9ff8e553f5 in do_io (v=0x7f9fe14de400) at src/mt_adaptor.c:379
#9 0x00007f9ff804de9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007f9ff671738d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()
I'm not sure what the underlying cause of this is... But POSIX always allows for a short read(2), and any program MUST check for short reads...
Has anyone else encountered this issue? We are seeing it rather frequently which is concerning.