hive big data

After using hive hue to query the results, click the button "Download results in XLS format" the exported data file is incomplete.is a picture of the file size comparison exported in XLS and CVS format, obviously exported file data in the CVS format is more than the data in XLS format650) this.width=650; "src=" Http://

Sequencefile is used to store data in binary, it can be compressed, and the compressed data can be divided, can be used for mapreduce processing.The following instance uses Sequencefile to save data for the hive table and uses compression.set hive.exec.compress.output=true; #压缩mapreduce输出数据 set Mapreduce.output.fileout

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

Reason for inclination:It is our ultimate goal to make the output data of map more evenly distributed to reduce. Due to the limitations of the hash algorithm, the key hash will result in more or less data skew. A great deal of experience shows that the reason for data skew is human-induced negligence or business logic that can be circumvented.Solution Ideas:The e

Reason for inclination:It is our ultimate goal to make the output data of map more evenly distributed to reduce. Due to the limitations of the hash algorithm, the key hash will result in more or less data skew. A great deal of experience shows that the reason for data skew is human-induced negligence or business logic that can be circumvented.Solution Ideas :The

The evolution of the Apache Kylin Big data analytics PlatformExt.: http://mt.sohu.com/20160628/n456602429.shtmlI am Li Yang from Kyligence, co-founder and CTO of Shanghai Kyligence. Today I am mainly here to share with you the new features and architecture changes of Apache Kylin 1.5.　　　　What is Apache Kylin?　　Kylin is an open source project developed in the last two years and is not very well known abroad,

The first step: the SDS table in the hive metadata finds the newly assigned field group ID (cd_id, all fields of the table corresponds to a cd_id field value) when the field is added, such as: SELECT * from SDS where location is like '%table_name% ' Second step: In the SDS table you can see the newly assigned field group value (cd_id), the Old field group value ID (cd_id) corresponding to the existing partition, in which the old cd_id value is updated

time Analytic processing, RTAP, is significant, and NetEase is one of the largest portals in the country, Real-time is also the company's current Internet products should have an important attribute.NetEase Big Data Spark technology applicationSpark Technology represents a new direction for future data processing, spark is a common parallel computing framework f

HDFs.Hadoop fs-put weblogs_parse.txt/user/hive/warehouse/test.db/weblogs/At this point, data 9 in the Hive table is shown.Figure 94. Open PDI, create a new transformation, 10.Figure 105. Edit the ' Table input ' step, as shown in 11.Figure 11Description: hive_101 is a hive database connection that has been built, as s

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

, and then divide them into local files.Classification: Learn from existing classifications and be able to assign to the right categories.Frequent itemsets mining: Requires a project group (the content of a shopping cart in a query session), and determines where individual items usually appear together.Using Mahout for natural language processingApache HcatalogApache Hcatalog is a data table and storage Management service created using Apache's Hadoop

Today we are going to work on a data stored in JSON format and want to put the data of each item of JSON directly into the hive table.There are two functions that hive directly reads into JSON:(1) Get_json_object (string json_string, String path)return value: StringDescription: Parses the JSON string json_string, retur

The data types commonly used in 1.hive include:TinyInt (byte), smallint (short), Int,bigint (long), float,double,boolean,string type. "Corresponding Java type in parentheses"add: for varchar and char types in MySQL: If the string length is less than 10 it is recommended to use char, greater than 10 using varchar. This is because for a varchar type, you must occupy one to two bytes to illustrate its characte

interoperability for data processing tools such as pig, mapreduce, and hive.Certificate ------------------------------------------------------------------------------------------------------------------------------------------------Chukwa:Chukwa is a hadoop-based big cluster monitoring system contributed by Yahoo.Certificate ----------------------------------------------------------------------------------

How can we cope with new challenges brought by data from traditional Internet, mobile Internet, and Weibo to enterprise management? How can we make full use of data when making key decisions? Today's data is everywhere and is increasing every day. We should say that if we want to save the data, we only need to say tha

Is there a way to display hive data using php? QUESTION: (1) Where do I set the user name and password when php connects to hive2 through thrift nbsp? I think the net is a tsocket object directly, and then the SQL statement is executed directly. I tried and couldn't connect to it! I don't think the user name and password won't be connected? Nbsp; use php to display d