手把手教你安装Hbase,一次成功！
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安装环境：
OS:
Centos 6.5
JDK: jdk1.6.0_18
Hadoop: hadoop-0.20.2
Hbase: hbase-0.90.5
安装准备：
1. Jdk环境已安装：版本号为1.6以上
2. hadoop环境已安装：全然分布模式安装例如以下
http://blog.csdn.net/lichangzai/article/details/8206834
3. hbase版本号选择
Hbase 版本号必需与 Hadoop版本号匹配，否则会安装失败或不能正常使用。关于两者何种版本号能正常匹配，能够看官方文档或在网上搜寻安装的成功案例。
4. hbase软件下载
http://mirror.bjtu.edu.cn/apache/hbase/hbase-0.90.5/
安装概述：
l 配置hosts，确保涉及的主机名均能够解析为ip
l 编辑hbase-env.xml
l 编辑hbase-site.xml
l 编辑regionservers文件
l 把Hbase拷贝到其他节点
l 启动Hbase
l 验证启动
安装步骤：
1. 配置hosts
此步在配置hadoop时已经完毕。例如以下：
[[email protected] ~]$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.2.101 rac1.localdomain rac1
192.168.2.102 rac2.localdomain rac2
192.168.2.100 gc.localdomain gc
2. 拷贝并解压安装包
[[email protected] ~]$ pwd
/home/grid
[[email protected] ~]$ tar -xzvf hbase-0.90.5.tar.gz
3. 替换hadoop核心jar包
主要目的是防止由于hbase和hadoop版本号不同出现兼容问题，造成hmaster启动异常
$ pwd
/home/grid/hbase-0.90.5/lib
$ mv hadoop-core-0.20-append-r1056497.jar hadoop-core-0.20-append-r1056497.jar.bak
$ cp /home/grid/hadoop-0.20.2/hadoop-0.20.2-core.jar /home/grid/hbase-0.90.5/lib/
$ chmod 775 hadoop-0.20.2-core.jar
4. 编辑hbase-env.xml
[[email protected] conf]$ pwd
/home/grid/hbase-0.90.5/conf
[[email protected] conf]$ vi hbase-env.sh
# 加入例如以下内容
# The java implementation to use. Java 1.6 required.
export JAVA_HOME=/usr/java/jdk1.6.0_18
# Extra Java CLASSPATH elements. Optional.
export HBASE_CLASSPATH=/home/grid/hadoop-0.20.2/conf
# Where log files are stored. $HBASE_HOME/logs by default.
export HBASE_LOG_DIR=${HBASE_HOME}/logs
# Tell HBase whether it should manage it‘s own instance of Zookeeper or not.
export HBASE_MANAGES_ZK=true
5. 编辑hbase-site.xml
[[email protected] conf]$ vi hbase-site.xml
#加入例如以下内容
<property>
<name>hbase.rootdir</name> #设置hbase数据库存放数据的文件夹
<value>hdfs://gc:9000/hbase</value>
</property>
<property>
<name>hbase.cluster.distributed</name> #打开hbase分布模式
<value>true</value>
</property>
<property>
<name>hbase.master</name> #指定hbase集群主控节点
<value>gc:60000</value>
</property>
<property>
<name>hbase.zookeeper.quorum</name>
<value>gc,rac1,rac2</value> #指定zookeeper集群节点名,由于是由zookeeper表决算法决定的
</property>
<property>
<name>hbase.zookeeper.property.dataDir</name> #指zookeeper集群data文件夹
<value>/home/grid/hbase-0.90.5/zookeeper</value>
</property>
6. 编辑regionservers文件
[[email protected] conf]$ cat regionservers
#把localhost改为例如以下
rac1
rac2
7. 将改动的hbase文件夹同步其他节点
--分别同步到rac1,rac2两节点
[[email protected] ~]$ scp -r hbase-0.90.5 rac1:/home/grid/
[[email protected] ~]$ scp -r hbase-0.90.5 rac2:/home/grid/
8. 启动/关闭Hbase数据库集群
--启动hbase之前必需检查hadoop是否已经启动
[[email protected] ~]$ hadoop-0.20.2/bin/hadoop dfsadmin -report
Configured Capacity: 45702094848 (42.56 GB)
Present Capacity: 3562618880 (3.32 GB)
DFS Remaining: 3562348544 (3.32 GB)
DFS Used: 270336 (264 KB)
DFS Used%: 0.01%
Under replicated blocks: 4
Blocks with corrupt replicas: 0
Missing blocks: 0
-------------------------------------------------
Datanodes available: 2 (2 total, 0 dead)
Name: 192.168.2.101:50010
Decommission Status : Normal
Configured Capacity: 22851047424 (21.28 GB)
DFS Used: 135168 (132 KB)
Non DFS Used: 20131606528 (18.75 GB)
DFS Remaining: 2719305728(2.53 GB)
DFS Used%: 0%
DFS Remaining%: 11.9%
Last contact: Tue Dec 25 09:40:14 CST 2012
Name: 192.168.2.102:50010
Decommission Status : Normal
Configured Capacity: 22851047424 (21.28 GB)
DFS Used: 135168 (132 KB)
Non DFS Used: 22007869440 (20.5 GB)
DFS Remaining: 843042816(803.99 MB)
DFS Used%: 0%
DFS Remaining%: 3.69%
Last contact: Tue Dec 25 09:40:13 CST 2012
--启动Hbase集群
----在gc master节点
[[email protected] ~]$ hbase-0.90.5/bin/start-hbase.sh
rac2: starting zookeeper, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-zookeeper-rac2.localdomain.out
gc: starting zookeeper, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-zookeeper-gc.localdomain.out
rac1: starting zookeeper, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-zookeeper-rac1.localdomain.out
starting master, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-master-gc.localdomain.out
rac1: starting regionserver, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-regionserver-rac1.localdomain.out
rac2: starting regionserver, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-regionserver-rac2.localdomain.out
--能够看到多出两个hbase进程
[[email protected] ~]$ jps
2718 HQuorumPeer
6875 JobTracker
6799 SecondaryNameNode
8129 org.eclipse.equinox.launcher_1.1.1.R36x_v20101122_1400.jar
2864 Jps
6651 NameNode
2772 HMaster
--rac1,rac2 slave节点
[[email protected] ~]$ jps
23663 HRegionServer
3736 DataNode
23585 HQuorumPeer
23737 Jps
3840 TaskTracker
[[email protected] ~]$ jps
10579 TaskTracker
29735 HQuorumPeer
29897 Jps
10480 DataNode
29812 HRegionServer
--通过浏览器验证:
http://192.168.2.100:60010/master.jsp
--关闭hbase集群
[[email protected] hbase-0.90.5]$ bin/stop-hbase.sh
stopping hbase...................
gc: stopping zookeeper.
rac2: stopping zookeeper.
rac1: stopping zookeeper.
命令行操作：
1. 经常使用hbase命令
--进入habase
[[email protected] ~]$ hbase-0.90.5/bin/hbase shell
HBase Shell; enter ‘help<RETURN>‘ for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 0.90.5, r1212209, Fri Dec 9 05:40:36 UTC 2011
hbase(main):001:0>
--查看数据库状态
hbase(main):002:0> status
2 servers, 0 dead, 1.0000 average load
--查询数据库版本号
hbase(main):004:0> version
0.90.5, r1212209, Fri Dec 9 05:40:36 UTC 2011
--帮助命令
hbase(main):003:0> help
HBase Shell, version 0.90.5, r1212209, Fri Dec 9 05:40:36 UTC 2011
Type ‘help "COMMAND"‘, (e.g. ‘help "get"‘ -- the quotes are necessary) for help on a specific command.
Commands are grouped. Type ‘help "COMMAND_GROUP"‘, (e.g. ‘help "general"‘) for help on a command group.
COMMAND GROUPS:
Group name: general
Commands: status, version
Group name: ddl
Commands: alter, create, describe, disable, drop, enable, exists, is_disabled, is_enabled, list
Group name: dml
Commands: count, delete, deleteall, get, get_counter, incr, put, scan, truncate
Group name: tools
Commands: assign, balance_switch, balancer, close_region, compact, flush, major_compact, move, split, unassign, zk_dump
Group name: replication
Commands: add_peer, disable_peer, enable_peer, remove_peer, start_replication, stop_replication
SHELL USAGE:
Quote all names in HBase Shell such as table and column names. Commas delimit
command parameters. Type <RETURN> after entering a command to run it.
Dictionaries of configuration used in the creation and alteration of tables are
Ruby Hashes. They look like this:
{‘key1‘ => ‘value1‘, ‘key2‘ => ‘value2‘, ...}
and are opened and closed with curley-braces. Key/values are delimited by the
‘=>‘ character combination. Usually keys are predefined constants such as
NAME, VERSIONS, COMPRESSION, etc. Constants do not need to be quoted. Type
‘Object.constants‘ to see a (messy) list of all constants in the environment.
If you are using binary keys or values and need to enter them in the shell, use
double-quote‘d hexadecimal representation. For example:
hbase> get ‘t1‘, "key\x03\x3f\xcd"
hbase> get ‘t1‘, "key\003\023\011"
hbase> put ‘t1‘, "test\xef\xff", ‘f1:‘, "\x01\x33\x40"
The HBase shell is the (J)Ruby IRB with the above HBase-specific commands added.
For more on the HBase Shell, see http://hbase.apache.org/docs/current/book.html
2. Hbase数据库操作命令
--创建表
resume表逻辑模型：
|
行键 |
列族binfo |
列族edu |
列族work |
|
|
lichangzai |
T2 |
binfo:age=’1980-1-1’ |
|
|
|
T3 |
binfo:sex=’man’ |
|
|
|
|
T5 |
|
edu:mschool=’rq no.1’ |
|
|
|
T6 |
|
edu:university=’qhddx’ |
|
|
|
T7 |
|
|
work:company1=’12580’ |
|
|
changfei |
T10 |
binfo:age=’1986-2-1’ |
|
|
|
T11 |
|
edu:university=’bjdx’ |
|
|
|
T12 |
|
|
work:company1=’LG’ |
|
|
…… |
Tn |
|
|
|
--创建表
hbase(main):005:0> create ‘resume‘,‘binfo‘,‘edu‘,‘work‘
0 row(s) in 16.5710 seconds
--列出表
hbase(main):006:0> list
TABLE
resume
1 row(s) in 1.6080 seconds
--查看表结构
hbase(main):007:0> describe ‘resume‘
DESCRIPTION ENABLED
{NAME => ‘resume‘, FAMILIES => [{NAME => ‘binfo‘, BLOOMFILTER => ‘NONE‘, REPLICATION_SCOPE => ‘0‘, C true
OMPRESSION => ‘NONE‘, VERSIONS => ‘3‘, TTL => ‘2147483647‘, BLOCKSIZE => ‘65536‘, IN_MEMORY => ‘fals
e‘, BLOCKCACHE => ‘true‘}, {NAME => ‘edu‘, BLOOMFILTER => ‘NONE‘, REPLICATION_SCOPE => ‘0‘, COMPRESS
ION => ‘NONE‘, VERSIONS => ‘3‘, TTL => ‘2147483647‘, BLOCKSIZE => ‘65536‘, IN_MEMORY => ‘false‘, BLO
CKCACHE => ‘true‘}, {NAME => ‘work‘, BLOOMFILTER => ‘NONE‘, REPLICATION_SCOPE => ‘0‘, COMPRESSION =>
‘NONE‘, VERSIONS => ‘3‘, TTL => ‘2147483647‘, BLOCKSIZE => ‘65536‘, IN_MEMORY => ‘false‘, BLOCKCACH
E => ‘true‘}]}
1 row(s) in 1.8590 seconds
--加入列族
hbase(main):014:0> disable ‘resume‘
0 row(s) in 4.2630 seconds
hbase(main):015:0> alter ‘resume‘,name=‘f1‘
0 row(s) in 4.6990 seconds
--删除列族
hbase(main):017:0> alter ‘resume‘,{NAME=>‘f1‘,METHOD=>‘delete‘}
0 row(s) in 1.1390 seconds
--或是
hbase(main):021:0> alter ‘resume‘,‘delete‘ => ‘f1‘
0 row(s) in 1.9310 seconds
hbase(main):022:0> enable ‘resume‘
0 row(s) in 5.9060 seconds
注意：
（1） ddl命令是区分大写和小写的。像ddl中的alter,create, drop, enable等都必需用小写。
而{}中的属性名都必需用大写。
（2） alter、drop表之前必需在先禁用(disabel)表，改动完后再启用表(enable)表，否则会报错
--查询禁用状态
hbase(main):024:0> is_disabled ‘resume‘
false
0 row(s) in 0.4930 seconds
hbase(main):021:0> is_enabled ‘resume‘
true
0 row(s) in 0.2450 seconds
--删除表
hbase(main):015:0> create ‘t1‘,‘f1‘
0 row(s) in 15.3730 seconds
hbase(main):016:0> disable ‘t1‘
0 row(s) in 6.4840 seconds
hbase(main):017:0> drop ‘t1‘
0 row(s) in 7.3730 seconds
--查询表是否存在
hbase(main):018:0> exists ‘resume‘
Table resume does exist
0 row(s) in 2.3900 seconds
hbase(main):019:0> exists ‘t1‘
Table t1 does not exist
0 row(s) in 1.3270 seconds
--插入数据
put ‘resume‘,‘lichangzai‘,‘binfo:age‘,‘1980-1-1‘
put ‘resume‘,‘lichangzai‘,‘binfo:sex‘,‘man‘
put ‘resume‘,‘lichangzai‘,‘edu:mschool‘,‘rq no.1‘
put ‘resume‘,‘lichangzai‘,‘edu:university‘,‘qhddx‘
put ‘resume‘,‘lichangzai‘,‘work:company1‘,‘12580‘
put ‘resume‘,‘lichangzai‘,‘work:company2‘,‘china mobile‘
put ‘resume‘,‘lichangzai‘,‘binfo:site‘,‘blog.csdn.net/lichangzai‘
put ‘resume‘,‘lichangzai‘,‘binfo:mobile‘,‘13712345678‘
put ‘resume‘,‘changfei‘,‘binfo:age‘,‘1986-2-1‘
put ‘resume‘,‘changfei‘,‘edu:university‘,‘bjdx‘
put ‘resume‘,‘changfei‘,‘work:company1‘,‘LG‘
put ‘resume‘,‘changfei‘,‘binfo:mobile‘,‘13598765401‘
put ‘resume‘,‘changfei‘,‘binfo:site‘,‘hi.baidu/lichangzai‘
--获取一行键的全部数据
hbase(main):014:0> get ‘resume‘,‘lichangzai‘
COLUMN CELL
binfo:age timestamp=1356485720612, value=1980-1-1
binfo:mobile timestamp=1356485865523, value=13712345678
binfo:sex timestamp=1356485733603, value=man
binfo:site timestamp=1356485859806, value=blog.csdn.net/lichangzai
edu:mschool timestamp=1356485750361, value=rq no.1
edu:university timestamp=1356485764211, value=qhddx
work:company1 timestamp=1356485837743, value=12580
work:company2 timestamp=1356485849365, value=china mobile
8 row(s) in 2.1090 seconds
注意：必须通过行键Row Key来查询数据
--获取一个行键。一个列族的全部数据
hbase(main):015:0> get ‘resume‘,‘lichangzai‘,‘binfo‘
COLUMN CELL
binfo:age timestamp=1356485720612, value=1980-1-1
binfo:mobile timestamp=1356485865523, value=13712345678
binfo:sex timestamp=1356485733603, value=man
binfo:site timestamp=1356485859806, value=blog.csdn.net/lichangzai
4 row(s) in 1.6010 seconds
--获取一个行键。一个列族中一个列的全部数据
hbase(main):017:0> get ‘resume‘,‘lichangzai‘,‘binfo:sex‘
COLUMN CELL
binfo:sex timestamp=1356485733603, value=man
1 row(s) in 0.8980 seconds
--更新一条记录
hbase(main):018:0> put ‘resume‘,‘lichangzai‘,‘binfo:mobile‘,‘13899999999‘
0 row(s) in 1.7640 seconds
hbase(main):019:0> get ‘resume‘,‘lichangzai‘,‘binfo:mobile‘
COLUMN CELL
binfo:mobile timestamp=1356486691591, value=13899999999
1 row(s) in 1.5710 seconds
注意：更新实质就是插入一条带有时间戳的记录，get查询时仅仅显示最新时间的记录
--通过timestamp来获取数据
------查询最新的时间戳的数据
hbase(main):020:0> get ‘resume‘,‘lichangzai‘,{COLUMN=>‘binfo:mobile‘,TIMESTAMP=>1356486691591}
COLUMN CELL
binfo:mobile timestamp=1356486691591, value=13899999999
1 row(s) in 0.4060 seconds
------查之前（即删除）时间戳的数据
hbase(main):021:0> get ‘resume‘,‘lichangzai‘,{COLUMN=>‘binfo:mobile‘,TIMESTAMP=>1356485865523}
COLUMN CELL
binfo:mobile timestamp=1356485865523, value=13712345678
1 row(s) in 0.7780 seconds
--全表扫描
hbase(main):022:0> scan ‘resume‘
ROW COLUMN+CELL
changfei column=binfo:age, timestamp=1356485874056, value=1986-2-1
changfei column=binfo:mobile, timestamp=1356485897477, value=13598765401
changfei column=binfo:site, timestamp=1356485906106, value=hi.baidu/lichangzai
changfei column=edu:university, timestamp=1356485880977, value=bjdx
changfei column=work:company1, timestamp=1356485888939, value=LG
lichangzai column=binfo:age, timestamp=1356485720612, value=1980-1-1
lichangzai column=binfo:mobile, timestamp=1356486691591, value=13899999999
lichangzai column=binfo:sex, timestamp=1356485733603, value=man
lichangzai column=binfo:site, timestamp=1356485859806, value=blog.csdn.net/lichangzai
lichangzai column=edu:mschool, timestamp=1356485750361, value=rq no.1
lichangzai column=edu:university, timestamp=1356485764211, value=qhddx
lichangzai column=work:company1, timestamp=1356485837743, value=12580
lichangzai column=work:company2, timestamp=1356485849365, value=china mobile
2 row(s) in 3.6300 seconds
--删除指定行键的列族字段
hbase(main):023:0> put ‘resume‘,‘changfei‘,‘binfo:sex‘,‘man‘
0 row(s) in 1.2630 seconds
hbase(main):024:0> delete ‘resume‘,‘changfei‘,‘binfo:sex‘
0 row(s) in 0.5890 seconds
hbase(main):026:0> get ‘resume‘,‘changfei‘,‘binfo:sex‘
COLUMN CELL
0 row(s) in 0.5560 seconds
--删除整行
hbase(main):028:0> create ‘t1‘,‘f1‘,‘f2‘
0 row(s) in 8.3950 seconds
hbase(main):029:0> put ‘t1‘,‘a‘,‘f1:col1‘,‘xxxxx‘
0 row(s) in 2.6790 seconds
hbase(main):030:0> put ‘t1‘,‘a‘,‘f1:col2‘,‘xyxyx‘
0 row(s) in 0.5130 seconds
hbase(main):031:0> put ‘t1‘,‘b‘,‘f2:cl1‘,‘ppppp‘
0 row(s) in 1.2620 seconds
hbase(main):032:0> deleteall ‘t1‘,‘a‘
0 row(s) in 1.2030 seconds
hbase(main):033:0> get ‘t1‘,‘a‘
COLUMN CELL
0 row(s) in 0.8980 seconds
--查询表中有多少行
hbase(main):035:0> count ‘resume‘
2 row(s) in 2.8150 seconds
hbase(main):036:0> count ‘t1‘
1 row(s) in 0.9500 seconds
--清空表
hbase(main):037:0> truncate ‘t1‘
Truncating ‘t1‘ table (it may take a while):
- Disabling table...
- Dropping table...
- Creating table...
0 row(s) in 21.0060 seconds
注意：Truncate表的处理过程：因为Hadoop的HDFS文件系统不同意直接改动，所以仅仅能先删除表在又一次创建已达到清空表的目的
3.
遇到的问题
问题：
在刚配置完毕hbase安装后，各节点进程还正常。但是过一小段时间后，master节点的HMaster进程就自已停止了。
之后再又一次启动master节点后，就出现了以下的问题
--master节点缺少HMaster进程
[[email protected] bin]$ ./start-hbase.sh
rac1: starting zookeeper, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-zookeeper-rac1.localdomain.out
rac2: starting zookeeper, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-zookeeper-rac2.localdomain.out
gc: starting zookeeper, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-zookeeper-gc.localdomain.out
starting master, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-master-gc.localdomain.out
rac2: starting regionserver, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-regionserver-rac2.localdomain.out
rac1: starting regionserver, logging to /home/grid/hbase-0.90.5/bin/../logs/hbase-grid-regionserver-rac1.localdomain.out
[[email protected] bin]$ jps
3871 NameNode
4075 JobTracker
8853 Jps
4011 SecondaryNameNode
8673 HQuorumPeer
--两slave节点rac1,rac2进程正常
[[email protected] bin]$ jps
10353 HQuorumPeer
10576 Jps
6457 DataNode
6579 TaskTracker
10448 HRegionServer
[[email protected] ~]$ jps
10311 HQuorumPeer
10534 Jps
6426 DataNode
6546 TaskTracker
10391 HRegionServer
以下是部分日志
--master节点gc的日志
[[email protected] logs]$tail -100f hbase-grid-master-gc.localdomain.log
2012-12-25 15:23:45,842 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server gc/192.168.2.100:2181
2012-12-25 15:23:45,853 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to gc/192.168.2.100:2181, initiating session
2012-12-25 15:23:45,861 INFO org.apache.zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x0, likely server has closed socket, closing socket connection and attempting reconnect
2012-12-25 15:23:46,930 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server rac1/192.168.2.101:2181
2012-12-25 15:23:47,167 WARN org.apache.zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2012-12-25 15:23:48,251 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server rac2/192.168.2.102:2181
2012-12-25 15:23:48,362 INFO org.apache.zookeeper.ZooKeeper: Session: 0x0 closed
2012-12-25 15:23:48,362 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down
2012-12-25 15:23:48,367 ERROR org.apache.hadoop.hbase.master.HMasterCommandLine: Failed to start master
java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster
at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1065)
at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:142)
at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:102)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:76)
at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1079)
Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase
at org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:809)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:837)
at org.apache.hadoop.hbase.zookeeper.ZKUtil.createAndFailSilent(ZKUtil.java:931)
at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:134)
at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:219)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1060)
[[email protected] logs]$tail -100f hbase-grid-zookeeper-gc.localdomain.log
2012-12-25 15:23:57,380 WARN org.apache.zookeeper.server.quorum.QuorumCnxManager: Cannot open channel to 2 at election address rac2/192.168.2.102:3888
java.net.ConnectException: Connection refused
at
sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)
at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:100)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:366)
at org.apache.zookeeper.server.quorum.QuorumCnxManager.toSend(QuorumCnxManager.java:335)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.process(FastLeaderElection.java:360)
at org.apache.zookeeper.server.quorum.FastLeaderElection$Messenger$WorkerSender.run(FastLeaderElection.java:333)
at java.lang.Thread.run(Thread.java:619)
.......
2012-12-25 15:23:57,670 INFO org.apache.zookeeper.server.ZooKeeperServer: Server environment:user.home=/home/grid
2012-12-25 15:23:57,671 INFO org.apache.zookeeper.server.ZooKeeperServer: Server environment:user.dir=/home/grid/hbase-0.90.5
2012-12-25 15:23:57,679 INFO org.apache.zookeeper.server.ZooKeeperServer: Created server with tickTime 3000 minSessionTimeout 6000 maxSessionTimeout 180000 datadir /home/grid/hbase-0.90.5/zookeeper/version-2 snapdir /home/grid/hbase-0.90.5/zookeeper/version-2
2012-12-25 15:23:58,118 WARN org.apache.zookeeper.server.quorum.Learner: Unexpected exception, tries=0, connecting to rac1/192.168.2.101:2888
java.net.ConnectException: Connection refused
at
java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:525)
at org.apache.zookeeper.server.quorum.Learner.connectToLeader(Learner.java:212)
at org.apache.zookeeper.server.quorum.Follower.followLeader(Follower.java:65)
at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:644) at
2012-12-25 15:24:00,886 INFO org.apache.zookeeper.server.quorum.Learner: Getting a snapshot from leader
2012-12-25 15:24:00,897 INFO org.apache.zookeeper.server.quorum.Learner: Setting leader epoch 9
2012-12-25 15:24:01,051 INFO org.apache.zookeeper.server.persistence.FileTxnSnapLog: Snapshotting: 900000000
2012-12-25 15:24:03,218 INFO org.apache.zookeeper.server.NioserverCnxn: Accepted socket connection from /192.168.2.101:12397
2012-12-25 15:24:03,377 INFO org.apache.zookeeper.server.NIOServerCnxn: Client attempting to establish new session at /192.168.2.101:12397
2012-12-25 15:24:03,396 WARN org.apache.zookeeper.server.quorum.Learner: Got zxid 0x900000001 expected 0x1
2012-12-25 15:24:03,400 INFO org.apache.zookeeper.server.persistence.FileTxnLog: Creating new log file: log.900000001
2012-12-25 15:24:03,470 INFO org.apache.zookeeper.server.NIOServerCnxn: Established session 0x3bd0f2560e0000 with negotiated timeout 180000 for client /192.168.2.101:12397
2012-12-25 15:24:07,057 INFO org.apache.zookeeper.server.NIOServerCnxn: Accepted socket connection from /192.168.2.102:52300
2012-12-25 15:24:07,690 INFO org.apache.zookeeper.server.NIOServerCnxn: Client attempting to establish new session at /192.168.2.102:52300
2012-12-25 15:24:07,712 INFO org.apache.zookeeper.server.NIOServerCnxn: Established session 0x3bd0f2560e0001 with negotiated timeout 180000 for client /192.168.2.102:52300
2012-12-25 15:24:10,016 INFO org.apache.zookeeper.server.quorum.FastLeaderElection: Notification: 2 (n.leader), 34359738398 (n.zxid), 1 (n.round), LOOKING (n.state), 2 (n.sid), FOLLOWING (my state)
2012-12-25 15:24:30,422 INFO org.apache.zookeeper.server.quorum.FastLeaderElection: Notification: 2 (n.leader), 34359738398 (n.zxid), 2 (n.round), LOOKING (n.state), 2 (n.sid), FOLLOWING (my state)
2012-12-25 15:24:30,423 INFO org.apache.zookeeper.server.quorum.FastLeaderElection: Notification: 2 (n.leader), 34359738398 (n.zxid), 2 (n.round), LOOKING (n.state), 2 (n.sid), FOLLOWING (my state)
--slave节点rac2的日志
[[email protected] logs]$tail -100f hbase-grid-regionserver-rac2.localdomain.log
2012-12-25 15:23:46,939 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server rac1/192.168.2.101:2181
2012-12-25 15:23:47,154 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to rac1/192.168.2.101:2181, initiating session
2012-12-25 15:23:47,453 INFO org.apache.zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x0, likely server has closed socket, closing socket connection and attempting reconnect
2012-12-25 15:23:47,977 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server gc/192.168.2.100:2181
2012-12-25 15:23:48,354 INFO org.apache.zookeeper.ClientCnxn: Socket connection established to gc/192.168.2.100:2181, initiating session
2012-12-25 15:23:49,583 INFO org.apache.zookeeper.ClientCnxn: Session establishment complete on server gc/192.168.2.100:2181, sessionid = 0x3bd0f2560e0001, negotiated timeout = 180000
2012-12-25 15:23:52,052 INFO org.apache.hadoop.hbase.regionserver.ShutdownHook: Installed shutdown hook thread: Shutdownhook:regionserver60020
解决方法
禁用IPV6。将/etc/hosts文件中面的：：1 localhost那一行删掉重新启动
[[email protected] ~]$ cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
# ::1 localhost6.localdomain6 localhosti6
192.168.2.101 rac1.localdomain rac1
192.168.2.102 rac2.localdomain rac2
192.168.2.100 gc.localdomain gc
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