Flume and Sqoop are Hadoop data integration and collection systems, both of which are positioned differently, following an introduction based on individual experience and understanding and everyone:FlumebyClouderadeveloped, there are two major products:Flume-ogand theFlume-ng,Flume-ogThe architecture is too complex, there will be data loss in the inquiring, so give up. Now we are using theFlume-ng, mainly log capture, this log can beTCPlog data for th
Recently, when importing data using Sqoop to HDF, the following error was reported:Find a lot of information on the Internet, found that there is a way to solve1. You have to be sure that you have to Sqoop to connect to your Linux MySQL database.2. You have to configure the Sqoop environment, make sure you can connect Hdoop, enter the
Test environment cdh5.4.8,hue3.7
(1) Enter the Hue interface, login, here to re-establish a Oozie account, using the default admin can also.
(2) New task
(3) New
(4) Drag the SQOOP1 to the specified position
(5) Write the Sqoop statement in the interface that you want to execute, click Add
(6) Click on the gear, add sqoop to perform before the action needed to execute, here need to
import data from the same table more than once, the data is inserted into the HDFs directory as append.Parallel importAssuming this sqoop command, you need to import data from Oracle into HDFS: Sqoop import--append--connect $CONNECTURL--username $ORACLENAME--password $ORACLEPASSWORD--target-dir $hdfsPath--m 1--table $oralceTableName--columns $columns--fields-terminated-by ' \001 '--where "data_desc= ' 2011
Operation Details: https://www.cnblogs.com/xiaodf/p/6030102.html
Note: You need to create a table structure to be exported before exporting. An error occurs if the exported table does not exist in the database, and the data in the table repeats if multiple exports are repeated;
CREATE TABLE Emp_demo as SELECT * from EMP where 1=2;
CREATE TABLE Salgrade_demo as SELECT * from Salgrade where 1=2;
Export all fields of a table
Sqoop export--connect jdbc:
[Author]: KwuSqoop handles Clob and Blob fields, Clob as large text in Oracle. The blob stores the binary file. This type of field is encountered when importing hive or HDFS requires special handling.1. measured frequently in OracleCREATE TABLE t_lob ( A INTEGER, B CLOB, C BLOB )Test dataInsert into T_lob (A, B, C) VALUES (1, ' Clob test ', To_blob (' 3456 '));2. Sqoop ScriptImport--append--connectjdbc:oracle:thin: @local
(Usergroupinformation.java:1657) at Org.apache.hadoop.mapred.YarnChild.main (Yarnchild.java:158)The small fetchsize parameter can not be solved, the problem is likely to be a row of data occupies a large space. The sqoop generated by the import table corresponding to the instantiation of the class Queryresult.java 244 rows can be located to the error column is File_content, is a binary column, and then query the original library, sure enough, the lar
test: with Oozie, execute Sqoop action to import data from DB2 into the Hive partition table. Places to be aware of:1, to add hive.metastore.uris this parameter. Otherwise, the data cannot be loaded into the hive table. Also, if there is more than one such operation in an XML literal, this parameter needs to be configured in each action.2, be aware of the escape character problem in XML. here in my SQL, there is a less than sign that needs to be rewri
Label:Sqoop the data from MySQL to Hive and reported that the database access was denied. But the weird is, sqoop error is prompted to connect to the local MySQL was rejected, is not prompted to connect the target data MySQL is denied. I also connected to the zookeeper, will also be prompted to connect all the zookeeper host MySQL is denied. Log as below. In fact, these problems are a reason, that is, the target data is the MySQL limit zookeeper host
data_type
category_id bigint
category_name string
category_level int
default_import_categ_prior int
user_import_categ_prior int
default_eliminate_categ_prior int
user_eliminate_categ_prior int
update_time string The fields of the hive table are separated by \001, the rows are separated by \ n, and the empty fields are filled in \ n . Now you need to export the hive table pms
Reprint Please specify source: http://blog.csdn.net/l1028386804/article/details/46517039Sqoop is used to import and export data.(1) Import data from databases such as MySQL, Oracle, etc. into HDFs, Hive, HBase(2) Export data from HDFs, Hive and hbase to databases such as MySQL, Oracle, etc.1. Import data from MySQL to HDFs (default is/user/Sqoop import--connect jdbc:mysql://hadoop0:3306/hive --username root--password admin--table tbls-- Fields-termin
[Author]: KwuSqoop export data from the relational library to Hive,sqoop supports the number of conditions in the query relational library to the Hive Data Warehouse, and the fields do not need to match the fields in the Hive table.Specific implementation of the script:#!/bin/sh # Upload logs to HDFs today= ' date--date= ' 0 days ago ' +%y-%m-%d ' sqoop import--connect JDBC:MYSQL://10. 130.2.6:3306/bdc_te
commands view data under HDFsImport the local data file into the HDFs:Compare data to an HDFS path using Hadoop directivesCreate External TableifNot exists EMP (IDintComment'User name', namestringComment'Month', JobstringComment'Number of visits') Comment'User Access Table' row format delimited fields terminated by "\ T" location "/user/hive/warehouse/test.db"; --Method 1. -put/root/part-m-00000 /user/hive/warehouse/test.db--Method 2. "/root/part-m-00000" into table test.emp;The above two met
First, using Sqoop to import data from MySQL into the hdfs/hive/hbaseIi. using Sqoop to export data from hdfs/hive/hbase to MySQL 2.3 NBSP; hbase data exported to MySQL There is no immediate command to direct data from HBase to MySQL. However, the data in HBase can be exported to HDFs first . Then export the data to MySQL.Iii. using Sqoop to import data fro
Tags: Import table temp mapred pre should export JDBC default modification The reason for this error is that a delimiter error is used between table fields in the specified hive for Sqoop read parsing to be incorrect. If the result of the MapReduce operation Rollup is performed by hive, the default delimiter is ' \001 ', otherwise the delimiter should be ' \ t ' if imported from an HDFs file. Here I am the result of hive performing the MapReduce analy
In recent projects, the results of the completion of Hadoop operations (which exist on HDFs) need to be imported into Oracle, but when you import the Date field ' 2016-03-01 ' in HDFs with Sqoop, the Sqoop error says that the date type must be ' yyyy-mm-dd HH:MM:SS.ffffffff .Does Sqoop not support the custom to_date function, so I started looking for answers onli
Tags: export exp single quote BSP import local condition target connectorData Sheet First class: Data in the database is imported into HDFs #数据库驱动jar包用mysql-connector-java-5.1. to-bin, otherwise there may be an error!./sqoop Import--connect Jdbc:mysql://localhost:3306/erpdb--username root--password 123456--table tbl_dep--columns ' uuid, name, Tele ': Output: part-m-00000:1, President of the Office,8888
2, purchasing department,6668
3,
1. Sqoop installed on Hadoop.client
2. Duplicate a copy of sqoop-env-template.sh, named sqoop-env.sh
3. Modify the contents of sqoop-env.sh:
Export Hadoop_common_home=/home/hadoopuser/hadoop
Export Hadoop_mapred_home=/home/hadoopuser/hadoop/lib
Export Hive_home=/home/hadoopuser/hive
4. Duplicate a copy of
Sqoop import MySQL data into HBase's blood and tears (for half a day)
Copyright NOTICE: This article is Yunshuxueyuan original article.If you want to reprint please indicate the source: Https://my.oschina.net/yunshuxueyuan/blogQQ Technology Group: 299142667
First, how the problem arisesMr. Pang only explained MySQL and HDFS,MYSQ and hive data interoperability, so decided to study the MySQL data directly into hbase, there are a series of
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.