大数据应用技术实验报告四 HBase

    xiaoxiao2023-10-22  25

    HBase安装配置

    ①下载压缩包(选择与自己安装的Hadoop版本的兼容版本,见后面附录) 官网下载地址:https://mirrors.tuna.tsinghua.edu.cn/apache/hbase/stable/ 选择稳定版hbase-1.4.9-bin.tar.gz,在Windows里面下载。

    ②将压缩包从Windows传输到Linux当前目录下 SecureCRT 【File】→【Connect SFTP Session】开启sftp操作 ③安装 解压安装到指定目录下/opt/module(/opt是系统自带目录,之下的/module是自己创建的) ④配置环境变量 在/etc/profile文件里添加HBase安装路径的配置信息,之后用source命令使配置生效。安装之后的目录为hbase-1.4.9,修改为hbase,所以我的HBase安装路径是/opt/module/hbase。 测试HBase安装成功,命令hbase version,或hbase。

    HBase配置(伪分布式模式) 配置文件位于HBase安装路径的conf目录(/opt/module/hbase/conf)下面

    ①配置hbase-env.sh 设置Java安装路径 设置HBase的配置文件路径(/opt/module/hbase/conf) 采用HBase自带Zookeeper,设置参数true

    ②配置hbase-site.xml

    hbase.rootdir hdfs://bigdata128:9000/hbase hbase.cluster.distributed true hbase.zookeeper.quorum localhost

    ③启动并运行HBase(之前启动Hadoop) 启动HBase,并jps查看 用完停止HBase运行(之后停止Hadoop)

    进入HBase数据库 进入HBase的shell命令行模式 了解命令使用方法,如创建表,输入help ‘create’

    ①创建表 ②添加数据 ③查看数据 ④删除数据 删除一个单元格 删除一行

    ⑤删除表

    HBase架构原理 https://www.cnblogs.com/steven-note/p/7209398.html

    Hbase Java API https://www.cnblogs.com/liuwei6/p/6842536.html https://www.cnblogs.com/tiantianbyconan/p/3557571.html

    参考资料: Linux下配置环境变量最常用的两种方法—— .bashrc 和 /etc/profile https://blog.csdn.net/sun8112133/article/details/79901527

    学习 HBase,应该选择哪个版本? https://blog.csdn.net/tzhuwb/article/details/81153323

    https://www.csdn.net/gather_2a/MtTaEgzsODU5Mi1ibG9n.html

    WARN [main] zookeeper.ZooKeeperNodeTracker: Can’t get or delete the master znode Will not attempt to authenticate using SASL (unknown error) 建表之后查看logs报错 ERROR [main] client.ConnectionManager H C o n n e c t i o n I m p l e m e n t a t i o n : C a n ′ t g e t c o n n e c t i o n t o Z o o K e e p e r : K e e p e r E r r o r C o d e = C o n n e c t i o n L o s s f o r / h b a s e 建 表 时 报 错 C a n ′ t g e t c o n n e c t i o n t o Z o o K e e p e r : K e e p e r E r r o r C o d e = C o n n e c t i o n L o s s f o r / h b a s e 重 新 停 止 、 启 动 H B A S E , 查 看 l o g s , 报 错 2019 − 04 − 0410 : 41 : 52 , 238 I N F O [ M : 0 ; b i g d a t a 128 : 35321 − S e n d T h r e a d ( l o c a l h o s t : 2181 ) ] z o o k e e p e r . C l i e n t C n x n : O p e n i n g s o c k e t c o n n e c t i o n t o s e r v e r l o c a l h o s t / 127.0.0.1 : 2181. W i l l n o t a t t e m p t t o a u t h e n t i c a t e u s i n g S A S L ( u n k n o w n e r r o r ) H b a s e s h e l l 运 行 s t a t u s 报 错 2019 − 04 − 0410 : 49 : 55 , 710 E R R O R [ m a i n ] c l i e n t . C o n n e c t i o n M a n a g e r HConnectionImplementation: Can't get connection to ZooKeeper: KeeperErrorCode = ConnectionLoss for /hbase 建表时报错 Can't get connection to ZooKeeper: KeeperErrorCode = ConnectionLoss for /hbase 重新停止、启动HBASE,查看logs,报错2019-04-04 10:41:52,238 INFO [M:0;bigdata128:35321-SendThread(localhost:2181)] zookeeper.ClientCnxn: Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error) Hbase shell 运行status 报错2019-04-04 10:49:55,710 ERROR [main] client.ConnectionManager HConnectionImplementation:CantgetconnectiontoZooKeeper:KeeperErrorCode=ConnectionLossfor/hbaseCantgetconnectiontoZooKeeper:KeeperErrorCode=ConnectionLossfor/hbaseHBASElogs2019040410:41:52,238INFO[M:0;bigdata128:35321SendThread(localhost:2181)]zookeeper.ClientCnxn:Openingsocketconnectiontoserverlocalhost/127.0.0.1:2181.WillnotattempttoauthenticateusingSASL(unknownerror)Hbaseshellstatus2019040410:49:55,710ERROR[main]client.ConnectionManagerHConnectionImplementation: Can’t get connection to ZooKeeper: KeeperErrorCode = ConnectionLoss for /hbase 启动hbase,报错: ERROR [main] server.ZooKeeperServer: ZKShutdownHandler is not registered ERROR [main] master.HMasterCommandLine: Master exiting java.io.IOException: Could not start ZK at requested port of 2181. ZK was started at port: 2182. Aborting as clients (e.g. shell) will not be able to find this ZK quorum.

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