hbase

Connect Tableau to plain Hbase

由 和自甴很熟 提交于 2019-12-11 12:15:03
问题 Is there any way to connect Tableau Desktop to plain Apache Hbase or plain Hive ? I could only find Tableau drivers for Hortonworks/ MapR/ Cloudhera etc. 回答1: Install drivers in desktop installed machine. You can't directly connect to hbase table via tableau you need to connect to hive table and hive internally mapped to hbase table. follow links http://thinkonhadoop.blogspot.in/2014/01/access-hbase-table-with-tableau-desktop.html http://grokbase.com/t/cloudera/cdh-user/141px9aqg5/hbase

hue配置HBase

由 China☆狼群 提交于 2019-12-11 11:47:09
1.修改HBase配置 cd /export/servers/hbase-1.2.0-cdh5.14.0/conf/ im hbase-site.xml <property> <name>hbase.thrift.support.proxyuser</name> <value>true</value> </property> <property> <name>hbase.regionserver.thrift.http</name> <value>true</value> </property> 拷贝到其他节点 scp hbase-site.xml node02:/$PWD scp hbase-site.xml node03:/$PWD 2.修改Hadoop的配置 cd /export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop vim core-site.xml <property> <name>hadoop.proxyuser.hbase.hosts</name> <value>*</value> </property> <property> <name>hadoop.proxyuser.hbase.groups</name> <value>*</value> </property> 分配到其他节点 scp core-site.xml

Load MapReduce output data into HBase

由 女生的网名这么多〃 提交于 2019-12-11 11:27:50
问题 The last few days I've been experimenting with Hadoop. I'm running Hadoop in pseudo-distributed mode on Ubuntu 12.10 and successfully executed some standard MapReduce jobs. Next I wanted to start experimenting with HBase. I've installed HBase, played a bit in the shell. That all went fine so I wanted to experiment with HBase through a simple Java program. I wanted to import the output of one of the previous MapReduce jobs and load it into an HBase table. I've wrote a Mapper that should

HBase：HBase的集群环境搭建

由 你离开我真会死。 提交于 2019-12-11 11:18:59
HBase的集群环境搭建 注意事项：HBase强依赖zookeeper和hadoop，安装HBase之前一定要保证zookeeper和hadoop启动成功，且服务正常运行 第一步：下载对应的HBase的安装包： 所有关于CDH版本的软件包下载地址如下 http://archive.cloudera.com/cdh5/cdh/5/ HBase对应的版本下载地址如下 http://archive.cloudera.com/cdh5/cdh/5/hbase-1.2.0-cdh5.14.0.tar.gz 第二步：压缩包上传并解压: 将我们的压缩包上传到node01服务器的/export/softwares路径下并解压 cd / export / softwares / tar - zxvf hbase - 1 . 2 . 0 - cdh5 . 14 . 0 - bin . tar . gz - C . . / servers / 第三步：修改配置文件： 第一台机器进行修改配置文件 cd / export / servers / hbase - 1.2 .0 - cdh5 . 14.0 / conf 修改第一个配置文件hbase-env.sh 注释掉HBase使用内部zk vim hbase-env.sh export JAVA_HOME = / export / servers /

HBase安装部署环境搭建

由 你。 提交于 2019-12-11 11:16:44
第一步：下载对应的HBase的安装包 所有关于CDH版本的软件包下载地址如下 http://archive.cloudera.com/cdh5/cdh/5/ HBase对应的版本下载地址如下 http://archive.cloudera.com/cdh5/cdh/5/hbase-1.2.0-cdh5.14.0.tar.gz 第二步：压缩包上传并解压 cd /export/softwares rz+回车上传下载好的HBase软件包 解压 tar -zxvf hbase-1.2.0-cdh5.14.0.tar.gz -C /export/servers/ 解压完毕 第三步：修改配置文件 第一台机器进行修改配置文件 cd /export/servers/hbase-1.2.0-cdh5.14.0/conf 修改第一个配置文件hbase-env.sh 注释掉HBase使用内部zk vim hbase-env.sh export JAVA_HOME=/export/servers/jdk1.8.0_141 JDK安装目录：/export/servers/jdk1.8.0_141 可以将其改为 ${JAVA_HOME} export HBASE_MANAGES_ZK=false 此处的true改为false 修改第二个配置文件hbase-site.xml 修改hbase-site.xml

HBase completebulkload returns exception

由 妖精的绣舞 提交于 2019-12-11 11:13:35
问题 I am trying to bulk-populate an HBase table quickly from a text file (several GB) by using the bulk loading method described in the Hadoop docs. I have created an HFile which I now want to push to my HBase table. When I use this command: hadoop jar /home/hxcaine/hadoop/lib/hbase.jar completebulkload /user/hxcaine/dbpopulate/output/cf1 my_hbase_table The job starts and then I get this exception: Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/util/concurrent

Why Hbase need WAL？

由 梦想与她 提交于 2019-12-11 11:13:25
问题 I'm new to Hbase, and I found that Hbase will write all the operations to WAL and memstore. Q1: I wonder why Hbase need WAL? Q2 : Hbase must write to WAL every time when I put or delete data, why don't operate it just in its data file? 回答1: HBase has is its own ACID semantics : http://hbase.apache.org/acid-semantics.html It needs a WAL so that it can replay edits in case of Failure of a RegionServer. WAL plays an important to provide durability guarantee. WAL is optional. You can disable WAL

diffrence between hbase copy and snapshot command

由 风格不统一 提交于 2019-12-11 11:06:58
问题 I have a table in hbase which contain a huge amount of data I want to take the back of the table so in this situation which is good 1--Copy command to take the back up of the table 2--Take the snapshot of that table And also please explain the internal mechanism of snapshot Is it simply renaming the table? Regards Amit 回答1: snapshot is best. HBase Snapshots allow you to take a snapshot of a table without too much impact on Region Servers. Snapshot, Clone and restore operations don't involve

HBase scan operation caching

由 喜夏-厌秋 提交于 2019-12-11 10:38:38
问题 What is the difference between setCaching and setBatch at HBase scan mechanism? What I must use for best performance during scan large data volumes? 回答1: Unless you have super-wide tables with many columns (or very large ones) you should completely forgot about setBatch() and focus exclusively on setCaching(): setCaching(int caching) Set the number of rows for caching that will be passed to scanners. If not set, the Configuration setting HConstants.HBASE_CLIENT_SCANNER_CACHING will apply.

connecting to zookeeper in different server

由 杀马特。学长 韩版系。学妹 提交于 2019-12-11 10:03:53
问题 I am trying to connect to a zookeeper that is running in another cluster or environment (eg staging) from dev cluster which has its own zookeeper. When I run this in distributed mode, I cannot connect to the a different hbase instance, but when I run in pseudo or standalone mode, I can connect to different hbase environment. Configuration cloneConfig = HBaseConfiguration.create(); cloneConfig.clear(); cloneConfig.set("hbase.zookeeper.quorum", "shost3,shost2,shost1"); cloneConfig.set("hbase
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