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  1. Hadoop Common
  2. HADOOP-15180

branch-2 : daemon processes' sysout overwrites 'ulimit -a' in daemon's out file

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 2.7.2
    • Fix Version/s: 2.10.0, 2.8.4, 2.9.2
    • Component/s: scripts
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Whenever the balancer starts, it will redirect the sys out to the out log file. And balancer writes the system output to the log file, at the same time script also will try to append ulimit output.

       # capture the ulimit output
          if [ "true" = "$starting_secure_dn" ]; then
            echo "ulimit -a for secure datanode user $HADOOP_SECURE_DN_USER" >> $log
            # capture the ulimit info for the appropriate user
            su --shell=/bin/bash $HADOOP_SECURE_DN_USER -c 'ulimit -a' >> $log 2>&1
          elif [ "true" = "$starting_privileged_nfs" ]; then
              echo "ulimit -a for privileged nfs user $HADOOP_PRIVILEGED_NFS_USER" >> $log
              su --shell=/bin/bash $HADOOP_PRIVILEGED_NFS_USER -c 'ulimit -a' >> $log 2>&1
          else
            echo "ulimit -a for user $USER" >> $log
            ulimit -a >> $log 2>&1
          fi
          sleep 3;
          if ! ps -p $! > /dev/null ; then
            exit 1
          fi
      
      

      But the problem is first few lines of ulimit is overridding by the log of balancer.

      vm1:/opt/install/hadoop/namenode/sbin # cat /opt/HA/AIH283/install/hadoop/namenode/logs/hadoop-root-balancer-vm1.out
      Time Stamp               Iteration#  Bytes Already Moved  Bytes Left To Move  Bytes Being Moved
      The cluster is balanced. Exiting...
      Jan 9, 2018 6:26:26 PM            0                  0 B                 0 B                0 B
      Jan 9, 2018 6:26:26 PM   Balancing took 3.446 seconds
      x memory size         (kbytes, -m) 13428300
      open files                      (-n) 1024
      pipe size            (512 bytes, -p) 8
      POSIX message queues     (bytes, -q) 819200
      real-time priority              (-r) 0
      stack size              (kbytes, -s) 8192
      cpu time               (seconds, -t) unlimited
      max user processes              (-u) 127350
      virtual memory          (kbytes, -v) 15992160
      file locks                      (-x) unlimited
      

        Attachments

        1. HADOOP-15180-branch-2-002.patch
          1 kB
          Ranith Sardar
        2. HADOOP-15180_branch-2.diff
          1 kB
          Ranith Sardar

          Activity

            People

            • Assignee:
              RANith Ranith Sardar
              Reporter:
              RANith Ranith Sardar
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              Dates

              • Created:
                Updated:
                Resolved: