Hbase 0.20 單機安裝

要求：

• • Java 1.6.x,或以後.

  • 只能搭配於 Hadoop 0.20.x.

  • ssh 能登入機器並免輸入密碼

  • HBase 從 0.20 後若要架設完全叢集模式，則需要搭配 ZooKeeper

  • 先運行 sudo ntpdate time.stdtime.gov.tw

資料夾設定

建立hbase.tmp.dir 於 /var/ 資料夾下

$ sudo mkdir /var/hbase

$ sudo chmod 755 /var/hbase

將hbase 解壓縮於 /opt

$ sudo tar -zxvf hbase-*.tar.gz /opt/

$ sudo ln -sf /opt/hbase-0.20.1 /opt/hbase

環境設定

將這一段寫入到 /opt/hbase/conf/conf/hbase-env.sh

export JAVA_HOME=/usr/lib/jvm/java-6-sun

export HBASE_HOME=/opt/hbase

export HBASE_LOG_DIR=/var/hbase/logs

export HBASE_PID_DIR=/var/hbase/pids

單機設定步驟

將這一段寫入到 /opt/hbase/conf/hbase-site.xml 內

<configuration>

<property>

<name>hbase.rootdir</name>

<value>hdfs://localhost:9000/hbase</value>

<description>The directory shared by region servers.

</description>

</property>

<property>

<name>hbase.tmp.dir</name>

<value>/var/hbase/${user.name}</value>

<description>Temporary directory on the local filesystem.</description>

</property>

</configuration>

ps：此 hbase.rootdir 目錄由hbase建立即可，不用手動另行操作

執行方法

啟動 hbase

$/opt/hbase/bin/start-hbase.sh

執行 hbase

$/opt/hbase/bin/hbase shell

hbase> # Type "help" to see shell help screen

hbase> help

hbase> # To create a table named "mylittletable" with a column family of "mylittlecolumnfamily", type

hbase> create "mylittletable", "mylittlecolumnfamily"

hbase> # To see the schema for you just created "mylittletable" table and its single "mylittlecolumnfamily", type

hbase> describe "mylittletable"

hbase> # To add a row whose id is "x", to the column "mylittlecolumnfamily:x" with a value of 'x', do

hbase> put "mylittletable", "x"

hbase> # To get the cell just added, do

hbase> get "mylittletable", "x"

hbase> # To scan you new table, do

hbase> scan "mylittletable"

停止 hbase

${HBASE_HOME}/bin/stop-hbase.sh

注意

• • HBase servers put up 10 listeners for incoming connections by default. Up this number if you have a dataset of any substance by setting hbase.regionserver.handler.count in your hbase-site.xml.

  • Hosts must be able to resolve the fully-qualified domain name of the master.

Bug Fix

問題解決頁面： http://wiki.apache.org/hadoop/Hbase/Troubleshooting

其他：

• FAQ: Why do I see "java.io.IOException...(Too many open files)" in my logs?

  • HADOOP-4681/HDFS-127 "DFSClient block read failures cause open DFSInputStream to become unusable".

  • HDFS-630: "In DFSOutputStream.nextBlockOutputStream(), the client can exclude specific datanodes when locating the next block".