I am running a command on sqoop
sqoop import –connect jdbc:mysql://localhost/hadoopguide – table widgets My sqoop version: Sqoop 1.4.4.2.0.6.1-101
Hadoop – Hadoop 2.2.0.2.0.6.0-101
Tak
Category: Opensource
Open-source software (open-source) is a new term that is defined as software whose source code can be used by the public, and the use, modification, and distribution of this software are not restricted by licenses. Open source software is usually copyrighted, and its license may contain such restrictions: deliberate protection of its open source status, notice of authorship, or development control. “Open source” is being registered as a certification mark by public interest software organizations, which is also a means of creating a formal definition of open source.
Polymorphism ‘get’ uses hibernate, multi-one, inheritancetype.joined
I have something like this..
A car class, one seat with many seats. Seat has a subclass LeatherSeat.
public class Car {
private Seat seat;
…
@ManyToOne(fetch = FetchType.LAZY)
pub
Install Yarn live
[ Summary] I recently got an open source project on gayhub, so I am going to study the source code. Of course, the first step is to get the project up and running. Then I took a look at the technol
Hibernate – Delete the parent reference before deleting the entity (if any)
Before deleting an entity, you must delete the entity from its parent list and delete the parent entity from the entity itself.
Example (CMT in EJB) One-to-many from state to city:
publ
Hadoop – Apache ozie loading Sharelib failed
I got the following oozie.log:
org.apache.oozie.service.ServiceException: E0104: Could not fully initialize service [org.apache.oozie.service.ShareLibService], Not able to cache sharelib. An
His longeting some HBase useful tools and features
1. HBase stores pictures, documents and other byte stream content
https://issues.apache.org/jira/browse/HBASE-11339
2. Speed control of compact
https://issues.apache.org/jira/br
Hive – Hadoop merged file
I have run a map job with only 674 mappers, and hive has generated 674 .gz files, and I want to merge these files into 30-35 files. Pass Do not get the merged output, try the hive megre mapfilse at
Hadoop: Specify YARN Queu for DistCP
On our cluster, we set up a dynamic resource pool.
Set the rules so that the first yarn will look at the specified queue, and then Check the username, then check the main group…
But u
Hadoop – How to Create a Spark DataFrame from Sequencefile
I am using spark 1.5. I want to create a data frame from a file in HDFS. The HDFS file contains json data with a large number of fields in a sequence input file format.
Is there a way to do t
Hadoop cluster time synchronization
1. Cluster time synchronization
Find a machine, as a practical server, all machines will synchronize with the cluster time regularly, for example, synchronize the time every ten minutes.
1.1 Steps