[jira] [Created] (DAEMON-355) the process created by jsvc can't read some os file like /proc/[pid]/io

["xiaodong.hu (JIRA)" <ji...@apache.org>]

xiaodong.hu created DAEMON-355:
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             Summary: the process created by jsvc can't read some os file like /proc/[pid]/io
                 Key: DAEMON-355
                 URL: https://issues.apache.org/jira/browse/DAEMON-355
             Project: Commons Daemon
          Issue Type: Bug
          Components: Jsvc
    Affects Versions: 1.0.13
         Environment: SUSE Linux Enterprise Server 11 SP3  (x86_64) - Kernel
            Reporter: xiaodong.hu


I started hadoop hdfs with jsvc by root.
command is:
          exec "$JSVC" \
           -Dproc_$COMMAND -outfile "$JSVC_OUTFILE" \
           -errfile "$JSVC_ERRFILE" \
           -pidfile "$HADOOP_SECURE_DN_PID" \
           -nodetach \
           -user "$HADOOP_SECURE_DN_USER" \
            -cp "$CLASSPATH" \
           $JAVA_HEAP_MAX $HADOOP_OPTS \
           org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter "$@".

the parameter $HADOOP_SECURE_DN_USER is hdfs.

Then there will be to proceses in the system.one is owned by root, another is owned by hdfs, but the process of hdfs can not read  /proc/[pid]/io file, because this file is owned by root.




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