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From keith-turner <...@git.apache.org>
Subject [GitHub] accumulo pull request #110: ACCUMULO-4328: Run multiple tablet servers per h...
Date Tue, 07 Jun 2016 15:04:00 GMT
Github user keith-turner commented on a diff in the pull request:

    https://github.com/apache/accumulo/pull/110#discussion_r66088472
  
    --- Diff: assemble/bin/start-daemon.sh ---
    @@ -103,9 +90,61 @@ ERRFILE="${ACCUMULO_LOG_DIR}/${SERVICE}_${LOGHOST}.err"
     rotate_log "$OUTFILE" ${ACCUMULO_NUM_OUT_FILES}
     rotate_log "$ERRFILE" ${ACCUMULO_NUM_OUT_FILES}
     
    -# Fork the process, store the pid
    -nohup ${NUMA_CMD} "$COMMAND" "${SERVICE}" --address "${ADDRESS}" >"$OUTFILE" 2>"$ERRFILE"
< /dev/null &
    -echo $! > ${PID_FILE}
    +if [[ "$SERVICE" != "tserver" || $NUM_TSERVERS -eq 1 ]]; then
    +   # Check the pid file to figure out if its already running.
    +   PID_FILE="${ACCUMULO_PID_DIR}/accumulo-${ACCUMULO_IDENT_STRING}-${SERVICE}.pid"
    +   if [ -f ${PID_FILE} ]; then
    +      PID=`cat ${PID_FILE}`
    +      if kill -0 $PID 2>/dev/null; then
    +         # Starting an already-started service shouldn't be an error per LSB
    +         echo "$HOST : $SERVICE already running (${PID})"
    +         exit 0
    +      fi
    +   fi
    +   echo "Starting $SERVICE on $HOST"
    +
    +   # Fork the process, store the pid
    +   nohup ${NUMA_CMD} "$COMMAND" "${SERVICE}" --address "${ADDRESS}" >"$OUTFILE" 2>"$ERRFILE"
< /dev/null &
    --- End diff --
    
    Why not have tserver always take the else so there is consistent behavior from the scripts
for 1 and >1 tservers?


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