Hbase和Hadoop的內存參數調優 + 前端控制檯 - 配置backup master和regionserver+hadoop的namenode啓動命令

1.hadoop的內存配置調優

mapred-site.xml的內存調整 <property>
<name>mapreduce.map.memory.mb</name>
<value>1536</value>
</property>
<property>
<name>mapreduce.map.java.opts</name>
<value>-Xmx1024M</value>
</property>
<property>
<name>mapreduce.reduce.memory.mb</name>
<value>3072</value>
</property>
<property>
<name>mapreduce.reduce.java.opts</name>
<value>-Xmx2560M</value>
</property> yarn-site.xml <property>
    <name>yarn.nodemanager.resource.memory-mb</name>
    <value>2048</value>
    <discription>每一個節點可用內存,單位MB</discription>
  </property>
  
  <property>
    <name>yarn.scheduler.minimum-allocation-mb</name>
    <value>1024</value>
    <discription>單個任務可申請最少內存，默認1024MB</discription>
  </property>
  
  <property>
    <name>yarn.scheduler.maximum-allocation-mb</name>
    <value>2048</value>
    <discription>單個任務可申請最大內存，默認8192MB</discription>
  </property> hadoop的內存調整hadoop-env.sh export HADOOP_HEAPSIZE_MAX=2048 export HADOOP_HEAPSIZE_MIN=2048

2.Hbase的參數調優

hbase的內存調整hbase-env.sh export HBASE_HEAPSIZE=8G

3.數據的導入導出

hbase數據的導出 hbase org.apache.hadoop.hbase.mapreduce.Export NS1.GROUPCHAT /do1/GROUPCHAT hdfs dfs -get /do1/GROUPCHAT /opt/GROUPCHAT 嘗試刪除數據 hdfs dfs -rm  -r /do1/GROUPCHAT hbase數據的導入 hdfs dfs -put /opt/GROUPCHAT /do1/GROUPCHAT hdfs dfs -ls /do1/GROUPCHAT hbase org.apache.hadoop.hbase.mapreduce.Import NS1.GROUPCHAT /do1/GROUPCHAT

 4.兩個master，再每個node加配置

backup-masters

[root@do2cloud01 conf]# pwd
/do1cloud/hbase-2.0.5/conf [root@do1cloud01 conf]# cat  backup-masters do1cloud02

 5.經過控制檯就能夠看出參數設置是否生效

10.0.0.99:16010 hbase控制檯 10.0.0.99:9870 Hadoop 前端控制檯 10.0.0.99:8088  集羣 前端控制檯

6.regionserver

[root@do2cloud01 conf]# cat regionservers
do1cloud02
do1cloud03
do1cloud04
do1cloud05