hbase的启动脚本说明

#!/usr/bin/env bash
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# Modelled after $HADOOP_HOME/bin/start-hbase.sh.

# Start hadoop hbase daemons.
# Run this on master node.
usage="Usage: start-hbase.sh [--autostart-window-size <window size in hours>]\
      [--autostart-window-retry-limit <retry count limit for autostart>]\
      [autostart|start]"

bin=`dirname "${BASH_SOURCE-$0}"`
bin=`cd "$bin">/dev/null; pwd`

# default autostart args value indicating infinite window size and no retry limit
AUTOSTART_WINDOW_SIZE=0
AUTOSTART_WINDOW_RETRY_LIMIT=0

. "$bin"/hbase-config.sh

# start hbase daemons
errCode=$?
if [ $errCode -ne 0 ]
then
  exit $errCode
fi

if [ "$1" = "autostart" ]
then
  commandToRun="--autostart-window-size ${AUTOSTART_WINDOW_SIZE} --autostart-window-retry-limit ${AUTOSTART_WINDOW_RETRY_LIMIT} autostart"
else
  commandToRun="start"
fi

# HBASE-6504 - only take the first line of the output in case verbose gc is on
distMode=`$bin/hbase --config "$HBASE_CONF_DIR" org.apache.hadoop.hbase.util.HBaseConfTool hbase.cluster.distributed | head -n 1`

if [ "$distMode" == 'false' ]
then
  "$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" $commandToRun master
else
  "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" $commandToRun zookeeper
  "$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" $commandToRun master
  "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
    --hosts "${HBASE_REGIONSERVERS}" $commandToRun regionserver
  "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
    --hosts "${HBASE_BACKUP_MASTERS}" $commandToRun master-backup
fi

最主要找jvm启动参数，翻译后的脚本

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#在$HADOOP_HOME/bin/start-hbase.sh后面建模。  
 
#启动hadoop hbase守护进程。  
#在主节点上运行。  
usage=" usage: start-hbase.sh[——autostart-window-size <以小时计算的窗口大小>]\  
[——autostart-window-retry-limit <retry count limit for autostart>]\  
(自动启动|开始)”  
 
本= '目录名“$ {BASH_SOURCE - $ 0} "  
本= ' cd " $本" > / dev / null; 松材线虫病的  
 
#默认自动启动参数值，表示无限窗口大小和没有重试限制  
AUTOSTART_WINDOW_SIZE = 0  
AUTOSTART_WINDOW_RETRY_LIMIT = 0  
 
．  " $本" / hbase-config.sh  
 
#启动hbase守护进程  
errCode = $ ?  
if [$errCode -ne 0]  
然后  
退出errCode美元  
fi  
 
如果["$1" = "autostart"]  
然后  
commandToRun="——autostart-window-size ${AUTOSTART_WINDOW_SIZE}——autostart-window-retry-limit ${AUTOSTART_WINDOW_RETRY_LIMIT} autostart"  
其他的  
commandToRun = "开始"  
fi  
 
# HBASE-6504—在启用verbose gc的情况下，只使用输出的第一行  
$bin/hbase——config "$HBASE_CONF_DIR" org.apache.hadoop.hbase.util.HBaseConfTool hbase.cluster.distributed | head -n 1 '  
 
if ["$distMode" == 'false']  
然后  
"$bin"/hbase-daemon.sh——config "${HBASE_CONF_DIR}  
其他的  
"$bin"/hbase-daemons.sh——config "${HBASE_CONF_DIR}" $commandToRun zookeeper .sh  
"$bin"/hbase-daemon.sh——config "${HBASE_CONF_DIR}  
"$bin"/hbase-daemons.sh——config "${HBASE_CONF_DIR}" \  
——hosts“${HBASE_REGIONSERVERS}  
"$bin"/hbase-daemons.sh——config "${HBASE_CONF_DIR}" \  
——hosts "${HBASE_BACKUP_MASTERS}  
fi  
最主要找jvm启动参数,