hive jdbc

2.3 Hive Internal Introduction: P44The jar file under the $HIVE _home/lib is a specific functional part; (CLI module) Other components, Thrift services, remote access to other process features, and the ability to access hive using JDBC and ODBC; all hive clients need a Metas

installation and the embedded is that the embedded derby is no longer used as a storage medium for metadata, but instead uses other databases such as MySQL to store the metadata.This approach is a multi-user mode that runs multiple user client connections to a database. This approach typically uses hive internally as a company.There is a premise that every user must have access rights to MySQL, that is, every client user needs to know the MySQL usern

-0.13.1-bin/log4jCopy the Oracle JDBC Jar packageCopy the appropriate Oracle JDBC package to $hive_home/libStart Hive [emailprotected]:~/hive/apache-hive-0.13.1-bin$ Hive 14/08/20 17:14:05 INFO configuration.deprecation: Mapred.re

1. Hive architecture and basic composition the following is the schema diagram for hive. Figure 1.1 Hive Architecture The architecture of hive can be divided into the following parts: (1) There are three main user interfaces: Cli,client and WUI. One of the most common is when CLI,CLI starts, it initiates a

datanucleus. Plugin: bundle "org. Eclipse. jdt. Core" requires "org. Eclipse. Text" but it cannot be resolved.11/10/31 18:07:27 info datanucleus. Persistence: Property datanucleus. cache. level2 unknown-will be ignored11/10/31 18:07:27 info datanucleus. Persistence: Property javax. JDO. Option. nontransactionalread unknown-will be ignored11/10/31 18:07:27 info datanucleus. persistence: ========================== persistence configuration ======================11/10/31 18:07:27 info datanucleus.

reason, I think the first Mondrian generated SQL is more, I recorded MySQL query records found an MDX query will generate about 18 SQL queries, including group by and join and other queries, Because Mondrian does not optimize the underlying data source (I think), it is theoretically the same for MySQL and hive-generated SQL (no comparison), so these lengthy SQL slows down the entire query, and hive is not

First, the Hive function1. Hive Built-in function(1) More content, see "Hive Official Documents"Https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF(2) Detailed explanation:Http://blog.sina.com.cn/s/blog_83bb57b70101lhmk.html(3) test the shortcut to the built-in function:1. Creating a dual Table CREATE t

ServiceSecondarynamenode-a redundant service that can be viewed as NamenodeJobtracker-Job Management services for parallel computingNode Services for Datanode-hdfsTasktracker-Job execution services for parallel computingManagement Services for Hbase-master-hbaseHbase-regionserver-Provide services for client-side inserts, deletes, query data, etc.Zookeeper-server-zookeeper collaboration and Configuration Management ServicesManagement Services for Hive

$ HIVE_CONF_DIR/ Cp hive-default.xml.template hive-default.xml Cat hive-env.sh Export HADOOP_HEAPSIZE = 512 Export HIVE_CONF_DIR =/home/hadoop/hive-conf 3. Test $ Hive Hive> show tables; OK Time taken: 4.824 seconds

database as the metadata storage tier by default.In Hive, Derby is started by default in "single user" mode, which means that only one user can use hive at a time, which is suitable for local testing when developing a program.The Hive configuration file is located under the $hive_home/conf directory, Named Hive-site.x