HBase与Zookeeper数据结构查询

一、前言

 　最近一年了吧，总是忙于特定项目的业务分析和顶层设计，很少花时间和精力放到具体的技术细节，感觉除了架构理念和分析能力的提升，在具体技术层次却并没有多大的进步。因为一些原因，总被人问及一些技术细节，很多细节都模糊了，花点时间，温习一下吧。技术部分将作为下一个阶段的工作重点。　

二、操作说明

查看Zookeeper内部HBase相关数据，有两个主要的渠道：一、通过Hbase shell命令zk_dump查看；二、通过zk_cli.sh查看；

三、zk_dump

HBase is rooted at /hbase
Active master address: localhost,60000,1411261739960
Backup master addresses:
Region server holding hbase:meta: localhost,60020,1411261739301
Region servers:
 localhost,60020,1411261739301
/hbase/replication: 
/hbase/replication/peers: 
/hbase/replication/rs: 
/hbase/replication/rs/localhost,60020,1411261739301: 
Quorum Server Statistics:
 192.168.230.128:2181
  Zookeeper version: 3.4.6-1569965, built on 02/20/2014 09:09 GMT
  Clients:
   /192.168.230.128:54264[1](queued=0,recved=204,sent=212)
   /192.168.230.128:54269[1](queued=0,recved=113,sent=113)
   /192.168.230.128:54265[1](queued=0,recved=460,sent=507)
   /192.168.230.128:54271[1](queued=0,recved=131,sent=131)
   /192.168.230.128:54274[1](queued=0,recved=86,sent=86)
   /192.168.230.128:54656[1](queued=0,recved=12,sent=12)
   /192.168.230.128:54654[1](queued=0,recved=3,sent=3)
   /192.168.230.128:54270[1](queued=0,recved=94,sent=94)
   /192.168.230.128:54481[1](queued=0,recved=242,sent=242)
   /192.168.230.128:54657[0](queued=0,recved=1,sent=0)
  
  Latency min/avg/max: 0/1/155
  Received: 1352
  Sent: 1406
  Connections: 10
  Outstanding: 0
  Zxid: 0x65
  Mode: standalone
  Node count: 38

四、zk_cli.sh

[zk: 192.168.230.128:2181(CONNECTED) 30] ls
ZooKeeper -server host:port cmd args
        connect host:port
        get path [watch]
        ls path [watch]
        set path data [version]
        rmr path
        delquota [-n|-b] path
        quit 
        printwatches on|off
        create [-s] [-e] path data acl
        stat path [watch]
        close 
        ls2 path [watch]
        history 
        listquota path
        setAcl path acl
        getAcl path
        sync path
        redo cmdno
        addauth scheme auth
        delete path [version]
        setquota -n|-b val path
[zk: 192.168.230.128:2181(CONNECTED) 31] ls /
[hbase, zookeeper]
[zk: 192.168.230.128:2181(CONNECTED) 32] ls /hbase
[meta-region-server, backup-masters, table, draining, region-in-transition, table-lock, running, master, namespace, hbaseid, online-snapshot, replication, splitWAL, recovering-regions, rs]
[zk: 192.168.230.128:2181(CONNECTED) 33]

五、说明

　　关于输出结果的解读，就不去细说了，感兴趣的兄弟，自己去问度娘吧。

　　莫愁前路无知己，夜漫自有早行人。大数据架构师技术交流： 347018601