phoenix

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm writing an application using Elixir Channels to handle realtime events. I understand that there will be 1 socket open per client and can multiplex multiple channels over it. So my app is a chat application where users are part of multiple group chats. I have 1 Phoenix Channel called MessageChannel where the join method will handle dyanamic topics. def join("groups:" <> group_id, payload, socket) do .... Let's say John joins groups/topics A and B while Bob only join group/topic B. When john sends a message to group/topic A, broadcast!/3

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a Java application with possibility to make some SQL select statements from Apache Phoenix. For this i'm using a principle with a keytab to create the connection. This is the class that support the connection : public class PhoenixDriverConnect { private static Connection conn; private static final Logger logger = LoggerFactory.getLogger(PhoenixDriverConnect.class); private PhoenixDriverConnect(String DB_URL) { GetProperties getProperties = new GetProperties(); try { Class.forName(getProperties.get("jdbc.driver")); } catch

Phoenix是构建在HBase上的一个SQL层，能让我们用标准的JDBC APIs而不是HBase客户端APIs来创建表，插入数据和对HBase数据进行查询。Phoenix完全使用Java编写，作为HBase内嵌的JDBC驱动。Phoenix查询引擎会将SQL查询转换为一个或多个HBase扫描，并编排执行以生成标准的JDBC结果集。 Download： http://phoenix.apache.org/download.html ，下载hbase对应版本的phoenix；解压bin.tar.gz包，拷贝 phoenix server jar 包到hbase集群的每个region server 的lib目录下，然后重启hbase 集群。 1. 连接hbase: bin/sqlline.py 192.168.31.10:2181 HBase集群配置zookeeper集群的ip地址和端口。 利用 !help 查看所有command。 2. 创建表： create table test (id varchar primary key,name varchar,age integer ); phoenix: hbase: Hbase是区分大小写的，Phoenix 默认会把sql语句中的小写转换成大写，再建表，如果不希望转换，需要将表名，字段名等使用引号

查询Phoenix系统表 （SYSTEM.CATALOG） ~ sql select distinct(TABLE_NAME) FROM SYSTEM.CATALOG; ~ 在Phoenix中删除表 ~ sql delete from SYSTEM.CATALOG where TABLE_NAME = 'TOUTIAOCLICKDATA'; ~ !tables disable 'TOUTIAOCLICKDATA' drop 'TOUTIAOCLICKDATA' 来源：博客园 作者： 大数据小码农 链接：https://www.cnblogs.com/wuning/p/11572537.html

1：创建表 create 'MY_TABLE', 'CF1','CF2' 2：在hbase上插入一条数据 put 'MY_TABLE','1' ,'CF1:V1', 'uwo1' 3：在phoenix上创建视图 create view MY_TABLE (PK varchar primary key, CF1.V1 varchar, CF2.V2 varchar, CF1.V3 varchar); 4：查询phoenix的视图 0: jdbc:phoenix:df1:2181> select * from MY_TABLE; +-----+-------+-----+-----+ | PK | V1 | V2 | V3 | +-----+-------+-----+-----+ | 1 | uwo1 | | | +-----+-------+-----+-----+ 5：向hbase在插入一条数据 put 'MY_TABLE','1' ,'CF1:V3', '10' 此时hbase中有2条数据，然后再次插入phoenix的视图： 0: jdbc:phoenix:df1:2181> select * from MY_TABLE; +-----+-------+-----+-----+ | PK | V1 | V2 | V3 | +-----+-------+-----+-----+

I can get Phoenix working on a standalone Apache Hbase (note, all this is for Hbase 1.0.0 on RHEL6.5) For the Cloudera flavour of Hbase however I never get it working without it throwing Exceptions. (even tried RHEL7 minimal as en OS) The same thing happens with Phoenix 4.4 for Hbase 1.0. hbase(main):001:0> version 1.0.0-cdh5.4.4, rUnknown, Mon Jul 6 16:59:55 PDT 2015 stack trace: [ec2-user@ip-172-31-60-109 phoenix-4.5.0-HBase-1.0-bin]$ bin/sqlline.py localhost:2181:/hbase Setting property: [isolation, TRANSACTION_READ_COMMITTED] issuing: !connect jdbc:phoenix:localhost:2181:/hbase none none

用到HBase的背景也是因为数据量到达了一定的量级，传统的关系型数据库存储处理有些乏力，固转为HBase这种扩展性更强、处理大数据更强的存储方式。 try { Connection con = DriverManager.getConnection("jdbc:phoenix:hb-proxy-pub1,hb-proxy-pub2,hb-proxy-pub3", props); Statement stmt = con.createStatement(); stmt.execute("drop table if exists test"); stmt.execute("create table test (mykey integer not null primary key, mycolumn varchar)"); stmt.execute("create index test_idx on test(mycolumn)"); stmt.executeUpdate("upsert into test values (1,'World!')"); stmt.executeUpdate("upsert into test values (2,'Hello')"); stmt.executeUpdate("upsert into test values (3,'World!')");

ԭ Java+Selenium3框架设计准备篇3-TestNG实现DDT（1） 2017年07月15日 22:56:13 Anthony_tester 阅读数：3193 </div> <div class="operating"> </div> </div> </div> 版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u011541946/article/details/75126377 </div> <link rel="stylesheet" href="https://csdnimg.cn/release/phoenix/template/css/ck_htmledit_views-f57960eb32.css"> <link rel="stylesheet" href="https://csdnimg.cn/release/phoenix/template/css/ck_htmledit_views-f57960eb32.css"> <div class="htmledit_views" id="content_views"> 我们来试试2个用户登录，数据存储在二维数组。 package lessons; import org.openqa.selenium.By ; import org.openqa.selenium

I am trying to connect kerberized Apache phoenix with the npm jdbc package on node.js [ node.js and npm jdbc package issue with kerberized apache phoenix ], but facing lots of challenges, hence looking for other solutions; In my case npm phoenix-client package seems to be a good option, but I didn't find any kerberized phoenix connectivity example, using phoenix-client package. If anybody have connected kerberized Apache phoenix uses npm phoenix-client package, please share your thoughts. I use jdbc package for that. My config looks like this. Correct the version numbers accordingly. if (