[ https://issues.apache.org/jira/browse/TS-4798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gandhimathi Velusamy updated TS-4798: ------------------------------------- Attachment: Steps_TrafficServer_balancer .pdf When I googled I found that urllib.urlretrieve() causes problem. I added a sleep of 0.5 sec in the while loop and it started working in a single threaded program. But still in multiple threads program, I am getting same error. > Crashing when using balancer plugin > ----------------------------------- > > Key: TS-4798 > URL: https://issues.apache.org/jira/browse/TS-4798 > Project: Traffic Server > Issue Type: Bug > Components: Core > Reporter: Gandhimathi Velusamy > Attachments: Steps_TrafficServer_balancer .pdf > > > {noformat} > Process: sudo [24280] > File: /usr/bin/sudo > Version: Traffic Server 7.0.0 > System Version: Linux x86_64 #111-Ubuntu SMP Fri Nov 6 18:17:06 UTC 2015 > 3.13.0-68-generic > Date: Tue, 30 Aug 2016 14:42:24 -0400 > No target signal information > No target CPU registers > Unable to retrieve backtrace: [5] Error establishing socket connection. > Process Status: > Name: sudo > State: S (sleeping) > Tgid: 24280 > Ngid: 0 > Pid: 24280 > PPid: 25297 > TracerPid: 0 > Uid: 0 0 0 0 > Gid: 1000 1000 1000 1000 > FDSize: 256 > Groups: 1000 > VmPeak: 64980 kB > VmSize: 64944 kB > VmLck: 0 kB > VmPin: 0 kB > VmHWM: 2060 kB > VmRSS: 2060 kB > VmData: 508 kB > VmStk: 136 kB > VmExe: 144 kB > VmLib: 3784 kB > VmPTE: 144 kB > VmSwap: 0 kB > Threads: 1 > SigQ: 0/47585 > SigPnd: 0000000000000000 > ShdPnd: 0000000000000000 > SigBlk: 0000000000000000 > SigIgn: 0000000000000000 > SigCgt: 00000001800b7a07 > CapInh: 0000000000000000 > CapPrm: 0000001fffffffff > CapEff: 0000001fffffffff > CapBnd: 0000001fffffffff > Seccomp: 0 > Cpus_allowed: 3 > Cpus_allowed_list: 0-1 > Mems_allowed: 00000000,00000001 > Mems_allowed_list: 0 > voluntary_ctxt_switches: 2 > nonvoluntary_ctxt_switches: 4 > Memory Regions: > 7f588b6bd000-7f588b6d6000 r-xp 00000000 fd:00 31852 > /lib/x86_64-linux-gnu/libpthread-2.19.so > 7f588b6d6000-7f588b8d5000 ---p 00019000 fd:00 31852 > /lib/x86_64-linux-gnu/libpthread-2.19.so > 7f588b8d5000-7f588b8d6000 r--p 00018000 fd:00 31852 > /lib/x86_64-linux-gnu/libpthread-2.19.so > 7f588b8d6000-7f588b8d7000 rw-p 00019000 fd:00 31852 > /lib/x86_64-linux-gnu/libpthread-2.19.so > 7f588b8d7000-7f588b8db000 rw-p 00000000 00:00 0 > 7f588b8db000-7f588b8e2000 r-xp 00000000 fd:00 31860 > /lib/x86_64-linux-gnu/librt-2.19.so > 7f588b8e2000-7f588bae1000 ---p 00007000 fd:00 31860 > /lib/x86_64-linux-gnu/librt-2.19.so > 7f588bae1000-7f588bae2000 r--p 00006000 fd:00 31860 > /lib/x86_64-linux-gnu/librt-2.19.so > 7f588bae2000-7f588bae3000 rw-p 00007000 fd:00 31860 > /lib/x86_64-linux-gnu/librt-2.19.so > 7f588bae3000-7f588bae6000 r-xp 00000000 fd:00 31726 > /lib/x86_64-linux-gnu/libpam_misc.so.0.82.0 > 7f588bae6000-7f588bce5000 ---p 00003000 fd:00 31726 > /lib/x86_64-linux-gnu/libpam_misc.so.0.82.0 > 7f588bce5000-7f588bce6000 r--p 00002000 fd:00 31726 > /lib/x86_64-linux-gnu/libpam_misc.so.0.82.0 > 7f588bce6000-7f588bce7000 rw-p 00003000 fd:00 31726 > /lib/x86_64-linux-gnu/libpam_misc.so.0.82.0 > 7f588bce7000-7f588bd2b000 r-xp 00000000 fd:00 31496 > /lib/x86_64-linux-gnu/libdbus-1.so.3.7.6 > 7f588bd2b000-7f588bf2a000 ---p 00044000 fd:00 31496 > /lib/x86_64-linux-gnu/libdbus-1.so.3.7.6 > 7f588bf2a000-7f588bf2b000 r--p 00043000 fd:00 31496 > /lib/x86_64-linux-gnu/libdbus-1.so.3.7.6 > 7f588bf2b000-7f588bf2c000 rw-p 00044000 fd:00 31496 > /lib/x86_64-linux-gnu/libdbus-1.so.3.7.6 > 7f588bf2c000-7f588bf34000 r-xp 00000000 fd:00 31706 > /lib/x86_64-linux-gnu/libnih-dbus.so.1.0.0 > 7f588bf34000-7f588c134000 ---p 00008000 fd:00 31706 > /lib/x86_64-linux-gnu/libnih-dbus.so.1.0.0 > 7f588c134000-7f588c135000 r--p 00008000 fd:00 31706 > /lib/x86_64-linux-gnu/libnih-dbus.so.1.0.0 > 7f588c135000-7f588c136000 rw-p 00009000 fd:00 31706 > /lib/x86_64-linux-gnu/libnih-dbus.so.1.0.0 > 7f588c136000-7f588c14d000 r-xp 00000000 fd:00 31708 > /lib/x86_64-linux-gnu/libnih.so.1.0.0 > 7f588c14d000-7f588c34c000 ---p 00017000 fd:00 31708 > /lib/x86_64-linux-gnu/libnih.so.1.0.0 > 7f588c34c000-7f588c34d000 r--p 00016000 fd:00 31708 > /lib/x86_64-linux-gnu/libnih.so.1.0.0 > 7f588c34d000-7f588c34e000 rw-p 00017000 fd:00 31708 > /lib/x86_64-linux-gnu/libnih.so.1.0.0 > 7f588c34e000-7f588c367000 r-xp 00000000 fd:00 31649 > /lib/x86_64-linux-gnu/libcgmanager.so.0.0.0 > 7f588c367000-7f588c566000 ---p 00019000 fd:00 31649 > /lib/x86_64-linux-gnu/libcgmanager.so.0.0.0 > 7f588c566000-7f588c568000 r--p 00018000 fd:00 31649 > /lib/x86_64-linux-gnu/libcgmanager.so.0.0.0 > 7f588c568000-7f588c569000 rw-p 0001a000 fd:00 31649 > /lib/x86_64-linux-gnu/libcgmanager.so.0.0.0 > 7f588c569000-7f588c573000 r-xp 00000000 fd:00 34529 > /lib/x86_64-linux-gnu/security/pam_systemd.so > 7f588c573000-7f588c772000 ---p 0000a000 fd:00 34529 > /lib/x86_64-linux-gnu/security/pam_systemd.so > 7f588c772000-7f588c773000 r--p 00009000 fd:00 34529 > /lib/x86_64-linux-gnu/security/pam_systemd.so > 7f588c773000-7f588c774000 rw-p 0000a000 fd:00 34529 > /lib/x86_64-linux-gnu/security/pam_systemd.so > 7f588c774000-7f588c776000 r-xp 00000000 fd:00 31821 > /lib/x86_64-linux-gnu/security/pam_umask.so > 7f588c776000-7f588c975000 ---p 00002000 fd:00 31821 > /lib/x86_64-linux-gnu/security/pam_umask.so > 7f588c975000-7f588c976000 r--p 00001000 fd:00 31821 > /lib/x86_64-linux-gnu/security/pam_umask.so > 7f588c976000-7f588c977000 rw-p 00002000 fd:00 31821 > /lib/x86_64-linux-gnu/security/pam_umask.so > 7f588c977000-7f588c97b000 r-xp 00000000 fd:00 31659 > /lib/x86_64-linux-gnu/libcap.so.2.24 > 7f588c97b000-7f588cb7a000 ---p 00004000 fd:00 31659 > /lib/x86_64-linux-gnu/libcap.so.2.24 > 7f588cb7a000-7f588cb7b000 r--p 00003000 fd:00 31659 > /lib/x86_64-linux-gnu/libcap.so.2.24 > 7f588cb7b000-7f588cb7c000 rw-p 00004000 fd:00 31659 > /lib/x86_64-linux-gnu/libcap.so.2.24 > 7f588cb7c000-7f588cb7e000 r-xp 00000000 fd:00 31784 > /lib/x86_64-linux-gnu/security/pam_cap.so > 7f588cb7e000-7f588cd7d000 ---p 00002000 fd:00 31784 > /lib/x86_64-linux-gnu/security/pam_cap.so > 7f588cd7d000-7f588cd7e000 r--p 00001000 fd:00 31784 > /lib/x86_64-linux-gnu/security/pam_cap.so > 7f588cd7e000-7f588cd7f000 rw-p 00002000 fd:00 31784 > /lib/x86_64-linux-gnu/security/pam_cap.so > 7f588cd7f000-7f588cd80000 r-xp 00000000 fd:00 31806 > /lib/x86_64-linux-gnu/security/pam_permit.so > 7f588cd80000-7f588cf7f000 ---p 00001000 fd:00 31806 > /lib/x86_64-linux-gnu/security/pam_permit.so > 7f588cf7f000-7f588cf80000 r--p 00000000 fd:00 31806 > /lib/x86_64-linux-gnu/security/pam_permit.so > 7f588cf80000-7f588cf81000 rw-p 00001000 fd:00 31806 > /lib/x86_64-linux-gnu/security/pam_permit.so > 7f588cf81000-7f588cf82000 r-xp 00000000 fd:00 31786 > /lib/x86_64-linux-gnu/security/pam_deny.so > 7f588cf82000-7f588d181000 ---p 00001000 fd:00 31786 > /lib/x86_64-linux-gnu/security/pam_deny.so > 7f588d181000-7f588d182000 r--p 00000000 fd:00 31786 > /lib/x86_64-linux-gnu/security/pam_deny.so > 7f588d182000-7f588d183000 rw-p 00001000 fd:00 31786 > /lib/x86_64-linux-gnu/security/pam_deny.so > 7f588d183000-7f588d18c000 r-xp 00000000 fd:00 31837 > /lib/x86_64-linux-gnu/libcrypt-2.19.so > 7f588d18c000-7f588d38c000 ---p 00009000 fd:00 31837 > /lib/x86_64-linux-gnu/libcrypt-2.19.so > 7f588d38c000-7f588d38d000 r--p 00009000 fd:00 31837 > /lib/x86_64-linux-gnu/libcrypt-2.19.so > 7f588d38d000-7f588d38e000 rw-p 0000a000 fd:00 31837 > /lib/x86_64-linux-gnu/libcrypt-2.19.so > 7f588d38e000-7f588d3bc000 rw-p 00000000 00:00 0 > 7f588d3bc000-7f588d3c9000 r-xp 00000000 fd:00 31822 > /lib/x86_64-linux-gnu/security/pam_unix.so > 7f588d3c9000-7f588d5c9000 ---p 0000d000 fd:00 31822 > /lib/x86_64-linux-gnu/security/pam_unix.so > 7f588d5c9000-7f588d5ca000 r--p 0000d000 fd:00 31822 > /lib/x86_64-linux-gnu/security/pam_unix.so > 7f588d5ca000-7f588d5cb000 rw-p 0000e000 fd:00 31822 > /lib/x86_64-linux-gnu/security/pam_unix.so > 7f588d5cb000-7f588d5d7000 rw-p 00000000 00:00 0 > 7f588d5d7000-7f588d5da000 r-xp 00000000 fd:00 31788 > /lib/x86_64-linux-gnu/security/pam_env.so > 7f588d5da000-7f588d7d9000 ---p 00003000 fd:00 31788 > /lib/x86_64-linux-gnu/security/pam_env.so > 7f588d7d9000-7f588d7da000 r--p 00002000 fd:00 31788 > /lib/x86_64-linux-gnu/security/pam_env.so > 7f588d7da000-7f588d7db000 rw-p 00003000 fd:00 31788 > /lib/x86_64-linux-gnu/security/pam_env.so > 7f588d7db000-7f588d7f4000 r-xp 00000000 fd:00 31648 > /lib/x86_64-linux-gnu/libaudit.so.1.0.0 > 7f588d7f4000-7f588d9f3000 ---p 00019000 fd:00 31648 > /lib/x86_64-linux-gnu/libaudit.so.1.0.0 > 7f588d9f3000-7f588d9f4000 r--p 00018000 fd:00 31648 > /lib/x86_64-linux-gnu/libaudit.so.1.0.0 > 7f588d9f4000-7f588d9f5000 rw-p 00019000 fd:00 31648 > /lib/x86_64-linux-gnu/libaudit.so.1.0.0 > 7f588d9f5000-7f588d9ff000 rw-p 00000000 00:00 0 > 7f588d9ff000-7f588da0c000 r-xp 00000000 fd:00 31724 > /lib/x86_64-linux-gnu/libpam.so.0.83.1 > 7f588da0c000-7f588dc0b000 ---p 0000d000 fd:00 31724 > /lib/x86_64-linux-gnu/libpam.so.0.83.1 > 7f588dc0b000-7f588dc0c000 r--p 0000c000 fd:00 31724 > /lib/x86_64-linux-gnu/libpam.so.0.83.1 > 7f588dc0c000-7f588dc0d000 rw-p 0000d000 fd:00 31724 > /lib/x86_64-linux-gnu/libpam.so.0.83.1 > 7f588dc0d000-7f588dc59000 r-xp 00000000 fd:00 78945 > /usr/lib/sudo/sudoers.so > 7f588dc59000-7f588de58000 ---p 0004c000 fd:00 78945 > /usr/lib/sudo/sudoers.so > 7f588de58000-7f588de59000 r--p 0004b000 fd:00 78945 > /usr/lib/sudo/sudoers.so > 7f588de59000-7f588de5c000 rw-p 0004c000 fd:00 78945 > /usr/lib/sudo/sudoers.so > 7f588de5c000-7f588de5f000 rw-p 00000000 00:00 0 > 7f588de5f000-7f588de69000 r-xp 00000000 fd:00 31865 > /lib/x86_64-linux-gnu/libnss_files-2.19.so > 7f588de69000-7f588e068000 ---p 0000a000 fd:00 31865 > /lib/x86_64-linux-gnu/libnss_files-2.19.so > 7f588e068000-7f588e069000 r--p 00009000 fd:00 31865 > /lib/x86_64-linux-gnu/libnss_files-2.19.so > 7f588e069000-7f588e06a000 rw-p 0000a000 fd:00 31865 > /lib/x86_64-linux-gnu/libnss_files-2.19.so > 7f588e06a000-7f588e075000 r-xp 00000000 fd:00 31856 > /lib/x86_64-linux-gnu/libnss_nis-2.19.so > 7f588e075000-7f588e274000 ---p 0000b000 fd:00 31856 > /lib/x86_64-linux-gnu/libnss_nis-2.19.so > 7f588e274000-7f588e275000 r--p 0000a000 fd:00 31856 > /lib/x86_64-linux-gnu/libnss_nis-2.19.so > 7f588e275000-7f588e276000 rw-p 0000b000 fd:00 31856 > /lib/x86_64-linux-gnu/libnss_nis-2.19.so > 7f588e276000-7f588e28d000 r-xp 00000000 fd:00 31851 > /lib/x86_64-linux-gnu/libnsl-2.19.so > 7f588e28d000-7f588e48c000 ---p 00017000 fd:00 31851 > /lib/x86_64-linux-gnu/libnsl-2.19.so > 7f588e48c000-7f588e48d000 r--p 00016000 fd:00 31851 > /lib/x86_64-linux-gnu/libnsl-2.19.so > 7f588e48d000-7f588e48e000 rw-p 00017000 fd:00 31851 > /lib/x86_64-linux-gnu/libnsl-2.19.so > 7f588e48e000-7f588e490000 rw-p 00000000 00:00 0 > 7f588e490000-7f588e499000 r-xp 00000000 fd:00 31847 > /lib/x86_64-linux-gnu/libnss_compat-2.19.so > 7f588e499000-7f588e698000 ---p 00009000 fd:00 31847 > /lib/x86_64-linux-gnu/libnss_compat-2.19.so > 7f588e698000-7f588e699000 r--p 00008000 fd:00 31847 > /lib/x86_64-linux-gnu/libnss_compat-2.19.so > 7f588e699000-7f588e69a000 rw-p 00009000 fd:00 31847 > /lib/x86_64-linux-gnu/libnss_compat-2.19.so > 7f588e69a000-7f588e963000 r--p 00000000 fd:00 73154 > /usr/lib/locale/locale-archive > 7f588e963000-7f588e9a0000 r-xp 00000000 fd:00 31869 > /lib/x86_64-linux-gnu/libpcre.so.3.13.1 > 7f588e9a0000-7f588eb9f000 ---p 0003d000 fd:00 31869 > /lib/x86_64-linux-gnu/libpcre.so.3.13.1 > 7f588eb9f000-7f588eba0000 r--p 0003c000 fd:00 31869 > /lib/x86_64-linux-gnu/libpcre.so.3.13.1 > 7f588eba0000-7f588eba1000 rw-p 0003d000 fd:00 31869 > /lib/x86_64-linux-gnu/libpcre.so.3.13.1 > 7f588eba1000-7f588ed5b000 r-xp 00000000 fd:00 31861 > /lib/x86_64-linux-gnu/libc-2.19.so > 7f588ed5b000-7f588ef5b000 ---p 001ba000 fd:00 31861 > /lib/x86_64-linux-gnu/libc-2.19.so > 7f588ef5b000-7f588ef5f000 r--p 001ba000 fd:00 31861 > /lib/x86_64-linux-gnu/libc-2.19.so > 7f588ef5f000-7f588ef61000 rw-p 001be000 fd:00 31861 > /lib/x86_64-linux-gnu/libc-2.19.so > 7f588ef61000-7f588ef66000 rw-p 00000000 00:00 0 > 7f588ef66000-7f588ef69000 r-xp 00000000 fd:00 31833 > /lib/x86_64-linux-gnu/libdl-2.19.so > 7f588ef69000-7f588f168000 ---p 00003000 fd:00 31833 > /lib/x86_64-linux-gnu/libdl-2.19.so > 7f588f168000-7f588f169000 r--p 00002000 fd:00 31833 > /lib/x86_64-linux-gnu/libdl-2.19.so > 7f588f169000-7f588f16a000 rw-p 00003000 fd:00 31833 > /lib/x86_64-linux-gnu/libdl-2.19.so > 7f588f16a000-7f588f16c000 r-xp 00000000 fd:00 31864 > /lib/x86_64-linux-gnu/libutil-2.19.so > 7f588f16c000-7f588f36b000 ---p 00002000 fd:00 31864 > /lib/x86_64-linux-gnu/libutil-2.19.so > 7f588f36b000-7f588f36c000 r--p 00001000 fd:00 31864 > /lib/x86_64-linux-gnu/libutil-2.19.so > 7f588f36c000-7f588f36d000 rw-p 00002000 fd:00 31864 > /lib/x86_64-linux-gnu/libutil-2.19.so > 7f588f36d000-7f588f38d000 r-xp 00000000 fd:00 31638 > /lib/x86_64-linux-gnu/libselinux.so.1 > 7f588f38d000-7f588f58c000 ---p 00020000 fd:00 31638 > /lib/x86_64-linux-gnu/libselinux.so.1 > 7f588f58c000-7f588f58d000 r--p 0001f000 fd:00 31638 > /lib/x86_64-linux-gnu/libselinux.so.1 > 7f588f58d000-7f588f58e000 rw-p 00020000 fd:00 31638 > /lib/x86_64-linux-gnu/libselinux.so.1 > 7f588f58e000-7f588f590000 rw-p 00000000 00:00 0 > 7f588f590000-7f588f5b3000 r-xp 00000000 fd:00 31854 > /lib/x86_64-linux-gnu/ld-2.19.so > 7f588f7b2000-7f588f7b3000 r--p 00022000 fd:00 31854 > /lib/x86_64-linux-gnu/ld-2.19.so > 7f588f7b3000-7f588f7b4000 rw-p 00023000 fd:00 31854 > /lib/x86_64-linux-gnu/ld-2.19.so > 7f588f7b4000-7f588f7b5000 rw-p 00000000 00:00 0 > 7f588f7b5000-7f588f7d9000 r-xp 00000000 fd:00 70913 > /usr/bin/sudo > 7f588f9cc000-7f588f9d0000 rw-p 00000000 00:00 0 > 7f588f9d6000-7f588f9d8000 rw-p 00000000 00:00 0 > 7f588f9d8000-7f588f9d9000 r--p 00023000 fd:00 70913 > /usr/bin/sudo > 7f588f9d9000-7f588f9db000 rw-p 00024000 fd:00 70913 > /usr/bin/sudo > 7f588f9db000-7f588f9dc000 rw-p 00000000 00:00 0 > 7f5891044000-7f5891065000 rw-p 00000000 00:00 0 > [heap] > 7fff59ef4000-7fff59f15000 rw-p 00000000 00:00 0 > [stack] > 7fff59f92000-7fff59f94000 r-xp 00000000 00:00 0 > [vdso] > ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 > [vsyscall] > Unable to retrieve Traffic Server records: [5] Error establishing socket > connection. > {noformat} -- This message was sent by 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