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Posted to hdfs-dev@hadoop.apache.org by "Ranith Sardar (JIRA)" <ji...@apache.org> on 2018/01/09 10:49:00 UTC
[jira] [Created] (HDFS-13002) Ulimit log is overridden by the
balancer sysout log in balancer out file
Ranith Sardar created HDFS-13002:
------------------------------------
Summary: Ulimit log is overridden by the balancer sysout log in balancer out file
Key: HDFS-13002
URL: https://issues.apache.org/jira/browse/HDFS-13002
Project: Hadoop HDFS
Issue Type: Bug
Components: balancer & mover
Affects Versions: 2.7.2
Reporter: Ranith Sardar
Priority: Minor
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.
{noformat}
# 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
{noformat}
But the problem is first few lines of ulimit is overridding by the log of balancer.
{noformat}
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
{noformat}
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