如何在windows平台上用Eclipse调试运行HBase 如何在windows平台上用Eclipse调试运行HBase
windows\u4e0beclipse\u8fde\u63a5hbase\u5931\u8d25\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\uff1f\u8dea\u6c42\u5927\u795e\uff01\uff01\u7b2c\u4e00\u79cd\u60c5\u51b5\uff1a
1.\u6d4b\u8bd5hbase:
a) cd hbase-0.90.4
b) bin/start-hbase.sh
c) bin/hbase shell
d) create \u2018database\u2019,\u2019cf\u2019
e) list
f) \u5982\u679c\u6210\u529f\u5219\u53ef\u4ee5\u770b\u5230\u6709\u4e0b\u9762\u7684\u7ed3\u679c\uff1a
hbase(main):001:0>list TABLE database 1 row(s)in 0.5910 seconds
2. \u521b\u5efaJava project, \u5c06hbase-0.90.4\u4e0b\u9762\u7684lib\u76ee\u5f55\u62f7\u8d1d\u5230\u5de5\u7a0b\uff0c\u5c06\u5176\u4e2d\u7684jar\u5305\u52a0\u5165classpath, \u8fd8\u6709hbase-0.90.5.jar \u548c test.jar
3. \u521b\u5efa\u7c7b
public class HelloHBase {
public static void main(String[] args) throws IOException {
Configuration conf = HBaseConfiguration.create();
conf.set("hbase.zookeeper.quorum", "192.168.128.128");
HBaseAdmin admin = new HBaseAdmin(conf);
HTableDescriptor tableDescriptor = admin.getTableDescriptor(Bytes.toBytes("database"));
byte[] name = tableDescriptor.getName();
System.out.println(new String(name));
HColumnDescriptor[] columnFamilies = tableDescriptor.getColumnFamilies();
for (HColumnDescriptor d : columnFamilies) {
System.out.println(d.getNameAsString());
}
}
\u8fd0\u884c\uff0c\u6b64\u65f6\u5e94\u8be5\u6253\u5370\u51fa\u4e0b\u9762\u4e24\u884c\uff1a
database cf
\u82e5\u6ca1\u6709\uff0c\u8bf4\u660e\u914d\u7f6e\u5931\u8d25\uff0c\u8bf7\u68c0\u67e5\u5176\u4ed6\u8bbe\u7f6e\u3002
==============================================
\u95ee\u98981\uff1a
java.net.ConnectException: Connection refused: no further information
a. zookeeper.ClientCnxn: Session 0x0 for server null,
\u89e3\u51b3: zppkeeper\u672a\u542f\u52a8\uff0c\u6216\u65e0\u6cd5\u8fde\u63a5\uff0c\u4ece\u67e5\u770b\u5404\u8282\u70b9zookeeper\u542f\u52a8\u72b6\u6001\u3001\u7aef\u53e3\u5360\u7528\u3001\u9632\u706b\u5899\u7b49\u65b9\u9762\u67e5\u770b\u539f\u56e0
b. getMaster attempt 4 of 10 failed; retrying after sleep of 2000
\u89e3\u51b3:\u67e5\u770b master log , \u5982\u679c\u6709\u4fe1\u606forg.apache.hadoop.hbase.regionserver.HRegionServer: Serving as BRDVM0240,43992,1373943529301, RPC listening on /127.0.0.1:43992, sessionid=0x13fe56a7d4b0001
\u5219\u8bf4\u660e\uff0c HRegionServer
\u76d1\u542c\u7684\u7aef\u53e3\u662flocalhost 127.0.0.1, \u9700\u8981\u4fee\u6539 server\u7aef /etc/hosts \u6587\u4ef6\uff0c 127.0.0.1
servername localhost.localdomain localhost
\u53bb\u6389 servername, \u7136\u540e\u91cd\u542fhbase
\u7b2c\u4e8c\u79cd\u60c5\u51b5\uff1a
java.net.ConnectException: Connection refused: no further information
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
12/09/03 15:37:15 INFO zookeeper.ClientCnxn: Opening socket connection to server /192.168.0.118:2181
12/09/03 15:37:16 INFO zookeeper.ClientCnxn: EventThread shut down
12/09/03 15:37:16 INFO zookeeper.ZooKeeper: Session: 0x0 closed
Exception in thread "main" org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information.
at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.(ZooKeeperWatcher.java:156)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:1209)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:511)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.(HConnectionManager.java:502)
at org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:172)
at org.apache.hadoop.hbase.client.HBaseAdmin.(HBaseAdmin.java:92)
at com.biencloud.test.first_hbase.main(first_hbase.java:22)
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.(ZooKeeperWatcher.java:134)
... 6 more
\u8fd9\u4e2a\u9519\u8bef\u8bf4\u660eeclipse\u6ca1\u6709\u8fde\u63a5\u5230zookeeper\uff0c\u5728\u7a0b\u5e8f\u4e2d\u6dfb\u52a0zookeeper\u914d\u7f6e\u4fe1\u606f\u5373\u53ef\uff0c\u5177\u4f53\u5982\u4e0b\uff1a
Configuration conf=HBaseConfiguration.create();
conf.set("hbase.zookeeper.quorum","192.168.0.118, 192.168.0.186, 192.168.0.182");
conf.set("hbase.zookeeper.property.clientPort","2222");
\u9644\u4e0a\u51fa\u5904\u94fe\u63a5\uff1ahttp://www.aboutyun.com/thread-5866-1-1.html
\u8f93adb devices\u53ef\u4ee5\u770b\u5230\u8bbe\u5907\uff1a
>adb device
MX21CA2BLHA4711616 device
emulator-5554 device
\u4f46\u5728eclipse\u91cc\u6253\u5f00\u8bbe\u5907\u5c31\u5565\u90fd\u6ca1\u6709\uff0c\u76f4\u63a5\u70b9\u8fd0\u884c\u5c31\u4f1a\u62a5\uff1a
The connection to adb is down, and a severe error has occured.
You must restart adb and Eclipse.
Please ensure that adb is correctly located at 'I:\Android\adt-bundle-windows-x86_64-20130917\adt-bundle-windows-x86_64-20130917\sdk\platform-tools\adb.exe' and can be executed.
----adb\u786e\u5b9e\u662f\u653e\u5728\u8fd9\u4e2a\u76ee\u5f55\u4e0b\u9762\u7684\u3002
\u4e5f\u6ca1\u6709\u5f39\u51fa\u8bbe\u5907\u9009\u62e9\u7684\u5bf9\u8bdd\u6846\uff0cadb kill-server \u518dstart-server\u4e5f\u65e0\u6548\uff0c\u641e\u4e86\u597d\u51e0\u5929\uff0c\u5f88\u662f\u5934\u75bc\u554a
操作步骤如下：
1.下载和安装cygwin；
2.下载新的Zookeeper包和HBase包，这里ZooKeeper版本为3.3.1，HBase版本为0.20.4
3.把利用它们的源码包在Eclipse下生成2个独立的Project,注意：zookeeper工程，要把那个conf目录加入到工程的src中去
4.修改zookeeper工程下的conf目录中的zoo.cfg文件，例子如下：
# The number of milliseconds of each tick
tickTime=5000
# the directory where the snapshot is stored.
dataDir=D:/zookeeper-3.3.1/data
# the port at which the clients will connect
clientPort=2181
就是给zookeeper指定文件存放的地方以及端口
5.启动zookeeper
在Eclipse中新建一个Run config，main class为：org.apache.zookeeper.server.quorum.QuorumPeerMain
启动的程序参数为：D:/workspace/zookeeper3.3.1/conf/zoo.cfg
启动的虚拟机参数为：
-Dzookeeper.log.dir=D:/workspace/zookeeper3.3.1/log
-Dzookeeper.root.logger=INFO,CONSOLE
如图所示：
好了，这样就可以在Eclipse中把ZooKeeper启动起来了。
6.修改HBase project中的一个类
org.apache.hadoop.hbase.LocalHBaseCluster
找到它的main函数，把main函数改成下
public static void main(String[] args) throws IOException {
HBaseConfiguration conf = new HBaseConfiguration();
conf.set("hbase.zookeeper.quorum", "localhost");
conf.set("hbase.zookeeper.property.clientPort", "2181");
LocalHBaseCluster cluster = new LocalHBaseCluster(conf,1);
cluster.startup();
}
注意行：LocalHBaseCluster cluster = new LocalHBaseCluster(conf,1); 构造函数中的1是代表Region server的个数，在这里只想起一个region server.
7.修改HBase的配置文件
在HBase project下的src中可以看到hbase-default.xml和hbase-site.xml两个文件，改哪个都可以。直接在hbase-default.xml改的，重要的是下面3个属性hbase.rootdir，hbase.cluster.distributed，hbase.tmp.dir，
把hbase.rootdir，hbase.tmp.dir都指向了本地的目录，当然可以根据自己的需要调整,当然格式一定一样写。
<property>
<name>hbase.rootdir</name>
<value>file:///D:/hbase-0.20.3/data </value>
<description>The directory shared by region servers.
Should be fully-qualified to include the filesystem to use.
E.g: hdfs://NAMENODE_SERVER:PORT/HBASE_ROOTDIR
</description>
</property>
<property>
<name>hbase.cluster.distributed</name>
<value>false </value>
<description>The mode the cluster will be in. Possible values are
false: standalone and pseudo-distributed setups with managed Zookeeper
true: fully-distributed with unmanaged Zookeeper Quorum (see hbase-env.sh)
</description>
</property>
<property>
<name>hbase.tmp.dir</name>
<value>D:/hbase-0.20.3/tmp </value>
<description>Temporary directory on the local filesystem.</description>
</property>
<property>
8.启动HBase，直接run org.apache.hadoop.hbase.LocalHBaseCluster就可以，run config不需要没有什么别的配置。当然就也可以debug了。
1. 下载和安装cygwin
2. 下载新的Zookeeper包和HBase包，我这里ZooKeeper版本为3.3.1，HBase版本为0.20.4
3. 把利用它们的源码包在Eclipse下生成2个独立的Project,注意：zookeeper工程，你要把那个conf目录加入到工程的src中去
4. 修改zookeeper工程下的conf目录中的zoo.cfg文件，例子如下：
# The number of milliseconds of each tick
tickTime=5000
# the directory where the snapshot is stored.
dataDir=D:/zookeeper-3.3.1/data
# the port at which the clients will connect
clientPort=2181
就是给zookeeper指定文件存放的地方以及端口
5.启动zookeeper
在Eclipse中新建一个Run config， main class为：org.apache.zookeeper.server.quorum.QuorumPeerMain
启动的程序参数为：D:/workspace/zookeeper3.3.1/conf/zoo.cfg（这个上面我们改动的东东啦，当然你可能不是这个路径）
启动的虚拟机参数为：
-Dzookeeper.log.dir=D:/workspace/zookeeper3.3.1/log
-Dzookeeper.root.logger=INFO,CONSOLE
如图所示：
好了，这样就可以在Eclipse中把ZooKeeper启动起来了。
6 修改HBase project中的一个类
org.apache.hadoop.hbase.LocalHBaseCluster
找到它的main函数，把main函数改成下
public static void main(String[] args) throws IOException {
HBaseConfiguration conf = new HBaseConfiguration();
conf.set("hbase.zookeeper.quorum", "localhost");
conf.set("hbase.zookeeper.property.clientPort", "2181");
LocalHBaseCluster cluster = new LocalHBaseCluster(conf,1);
cluster.startup();
}
注意红色那行： LocalHBaseCluster cluster = new LocalHBaseCluster(conf,1); 构造函数中的1是代表Region server的个数，在这里我只想起一个region server.
7 修改HBase的配置文件
在HBase project下的src中你可以看到hbase-default.xml和hbase-site.xml两个文件，你改哪个都可以。
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