hive helper

I've described two ways in which hive imports analysis results into MySQL tables, respectively: Sqoop import and Using hive, MySQL JDBC driver, now I'm going to introduce a third, and use a lot more ways--using hive custom Functions ( UDF or genericudf) inserts each record into a database table.First, using the UDF methodUsing UDF is a simple implementation, as

Business backgroundThe EXTRACT_TRFC_PAGE_KPI hive SQL is as follows: set Mapred.job.queue.name=pms; set hive. exec. reducers. Max=8; Set mapred.reduce.tasks=8; set mapred.job.name=extract_trfc_page_kpi;InsertOverwriteTablePMS.EXTRACT_TRFC_PAGE_KPI Partition (ds=' $yesterday ')Select distinctPAGE_TYPE_ID, PV, UV,' $yesterday 'Update_time from(--For PC, H5SelectPAGE_TYPE_ID,sum(PV) asPvsum(UV) asUv fromDw.rpt

3, hive installation configuration3.1install MySQLInstalling MySQL on the datanode5# yum-y Installmysql-server MySQL# MySQLMysql> Grant all privileges on * * [email protected] ' 10.40.214.% ' identified by ' hive ';mysql> flush Privileges;3.2Installing Hive# tar-zxf Apache-hive-0.13.1-bin.tar.gz-c/var/data/; Mv/var/dat

Hive non-interactive mode and hive Mode Run $ HIVE_HOME/bin/hive on a linux terminal to enter the interaction mode; $ HIVE_HOME/bin/hive-e or-f is in non-interactive mode. 1. Execute HQL statements in non-interactive mode $HIVE_HOME/bin/hive -e 'select * from movie limit 1

In the first three sections, basic data has been maintained for hive permission control, and now the user permission configuration function has been implemented. In addition, you can perform maintenance and management through the interface. Next, the most important thing is to modify the Hive source code. Mainly for org. apache. hadoop. hive. conf. HiveConf and o

hive installation deployment, there are many tutorials on the web, I will not repeat here, this time I would like to talk about how hive submits the HQL statement to hive execution. There are several ways: first, hiveserver provide thrift interface by building Hiveserver to receive HQL statement execution from remote commit. The benefit of this is that there i

Hive has been used for a while, but no related logs have been written, because hive is mainly used in the create table, upload data, and crud processes. Later, I needed some frequently used methods in my work. I learned that hive supports UDF (user define function). I have read some articles and found that UDF writing is also very simple, inherit the UDF and over

The hive Tool that reads and computes data from any hive single table and writes data to any mysql Single table. In the hive-based data warehouse, each dimension has many hierarchical concepts, it is important to configure and Display dimensions and metrics online and offline in mysql. This hive Tool is suitable for an

detect (probe) the Hashtable of small table in the map stage. If join key is equal, it is written to HDFs.The map join is called a map join because all of its work is computed on the map side.Hive has made several optimizations on the map join:In hive 0.6, the default is that a large table is behind a select, a small table in front, or a/*+mapjoin (map_table) */hint to set it. In hive 0.7, this calculation

Hive Startup times the following error message [Root@master bin]# Hive Missing Hive execution Jar:/data0/hive/hive1.2.1/lib/hive-exec-*.jar Solve: 1. Check/etc/profile file configuration $HIVE _home configuration is correct

Tags: lazy expand lib Access time info version MySQL database blog artOverviewThe metadata information of Hive is usually stored in the relational database, and the common MySQL database is managed as a meta-database. The previous installation of Hive also stores metadata information in the MySQL database.Hive metadata information has 57 tables in MySQL dataOne, the metadata table (version) that stores the

Hive Concurrency Model Hive Concurrency Model Use Cases Turn Off Concurrency Debugging Configuration Locking in Hive transactions Use CasesConcurrency Support (http://issues.apache.org/jira/browse/HIVE-1293) was a must in databases and their use cases be well u Nders

When you have a need to do all kinds of statistics from a hive table, then fall into the statistical tables of each category to store. Naturally we would think of using the Hive Multi Insert statement to implement it. Because you can avoid multiple scans of the same original table data by using the Multi Insert statement. This document records the GC overhead limit exceeded problem that occurs once using th

Tags: hive load install step INF blog Apach info share picture RAMFirst, install the Dbvisualizerhttp://www.dbvis.com/ You can also download the cracked version of the program from the Internet, the version used here is Dbvisualizer 9.1.1 Specific installation steps can be Baidu, or modify the installation directory after the default installation can beConfigure hive JDBC 1 in the Dbvisualizer, create a new

1.remote IntegratedThis type of storage requires running a MySQL server on the remote server , and the meta service needs to be started on the Hive server . here with mysql test server,IP bit 192.168.1.214, new hive_ Remote database, character set bit latine1;$ vim Hive-site.xmlConfiguration> Property>name>Hive.metastore.warehouse.dirname>value>/user/hive/wareho

I have already set up the hadoop and hive environments, created a table page in hive, and loaded the data in. Now I want to count the traffic of each URL from this table and put it in another relational database or display it on the page. What should I do? Go to the official website and check whether Java, Python, and PHP can be used for implementation. The following is a simple script written in Python. F

Install hive and hive Hive installation is relatively simple, because there is no need to modify too many configuration files 1. Download and decompress I put it in/usr/hadoop/hive 2. Set the environment variable. (It seems that it is not set) vim /etc/profileexport JAVA_HOME=/usr/java/jdk8export HADOOP_HOME=/usr/