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  参考:IT虾米网

  参考:IT虾米网

  1、创建表

    

CREATE TABLE my_first 
( 
  id STRING, 
  int_value INT, 
    bigint_value BIGINT, 
  PRIMARY KEY(id) 
) 
PARTITION BY HASH PARTITIONS 3 
STORED AS KUDU;

  需要注意的是 PARTITION BY HASH PARTITIONS 3,3这个数字需要和实际的物理机器有关,不能大于实际的物理机器数,这个很令人费解,还没有找到原因。

  java测试代码

  

package main.java; 
import java.sql.Timestamp; 
import java.util.List; 
import java.util.UUID; 
import org.apache.kudu.client.*; 
/** 
 * @Author:sks 
 * @Description: 
 * @Date:Created in 14:59 2018/3/29 
 * @Modified by: 
 **/ 
import java.util.Date; 
public class test { 
    private final static int mutationBufferSpace = 2000; 
 
    public static void main(String[] args) { 
        try { 
            testInsert(); 
        } catch (KuduException e) { 
            e.printStackTrace(); 
        } 
 
    } 
 
    public static void testInsert() throws KuduException { 
        String master = "192.163.1.175:7051"; 
        KuduSession session =null; 
//        String master = "101.201.197.71:7051"; 
        try { 
            KuduClient client = new KuduClient.KuduClientBuilder(master) 
                    .build(); 
            session = client.newSession(); 
            String tableName = "impala::default.my_first"; 
            KuduTable table = client.openTable(tableName); 
 
            SessionConfiguration.FlushMode mode; 
            Timestamp d1 = null; 
            Timestamp d2 = null; 
            long millis; 
            long seconds; 
            int recordCount = 1000; 
            mode = SessionConfiguration.FlushMode.MANUAL_FLUSH; 
            d1 = new Timestamp(System.currentTimeMillis()); 
            insertManual(session, table,  recordCount); 
            d2 = new Timestamp(System.currentTimeMillis()); 
            millis = d2.getTime() - d1.getTime(); 
            seconds = millis / 1000 % 60; 
            System.out.println(mode.name() + "耗时秒数:" + seconds); 
 
 
        } catch (KuduException e) { 
            e.printStackTrace(); 
        } 
        catch (Exception e) { 
            e.printStackTrace(); 
        } finally { 
            if (!session.isClosed()) { 
                session.close(); 
            } 
        } 
 
    } 
 
    //仅支持手动flush的测试用例 
    public static void insertManual(KuduSession session, KuduTable table, int recordCount) throws Exception { 
 
        SessionConfiguration.FlushMode mode = SessionConfiguration.FlushMode.MANUAL_FLUSH; 
        session.setFlushMode(mode); 
        //如果不设置,默认是1000 
        session.setMutationBufferSpace(mutationBufferSpace); 
 
        int uncommit = 0; 
        for (int i = 0; i < recordCount; i++) { 
            System.out.println(i); 
            Insert insert = table.newInsert(); 
            PartialRow row = insert.getRow(); 
            UUID uuid = UUID.randomUUID(); 
            row.addString("id", uuid.toString()); 
            row.addInt("int_value", i); 
            row.addLong("bigint_value", 10000L); 
            session.apply(insert); 
            // 对于手工提交, 需要buffer在未满的时候flush,这里采用了buffer一半时即提交 
//            uncommit = uncommit + 1; 
//            if (uncommit > OPERATION_BATCH / 2) { 
//                session.flush(); 
//                uncommit = 0; 
//            } 
        } 
 
        // 对于手工提交, 保证完成最后的提交 
        if (uncommit > 0) { 
            List<OperationResponse> lst = session.flush(); 
            for(OperationResponse oor :lst){ 
                System.out.println(oor.getRowError()); 
            } 
        } 
    } 
 
    //仅支持自动flush的测试用例 
    public static void insertInAutoSync(KuduSession session, KuduTable table, int recordCount) throws Exception { 
        // SessionConfiguration.FlushMode.AUTO_FLUSH_BACKGROUND 
        // SessionConfiguration.FlushMode.AUTO_FLUSH_SYNC 
        // SessionConfiguration.FlushMode.MANUAL_FLUSH 
        SessionConfiguration.FlushMode mode = SessionConfiguration.FlushMode.AUTO_FLUSH_SYNC; 
        //如果不设置,默认是1000 
        session.setFlushMode(mode); 
 
        for (int i = 0; i < recordCount; i++) { 
            Insert insert = table.newInsert(); 
            PartialRow row = insert.getRow(); 
            UUID uuid = UUID.randomUUID(); 
            row.addString("id", uuid.toString()); 
            row.addInt("int_value", 100); 
            row.addLong("bigint_value", 10000L); 
            session.apply(insert); 
        } 
    } 
 
 
}
View Code

 maven配置

 <dependencies> 
        <dependency> 
            <groupId>net.sourceforge.javacsv</groupId> 
            <artifactId>javacsv</artifactId> 
            <version>2.0</version> 
        </dependency> 
        <dependency> 
            <groupId>org.apache.poi</groupId> 
            <artifactId>poi</artifactId> 
            <version>3.17</version> 
        </dependency> 
        <dependency> 
            <groupId>org.apache.poi</groupId> 
            <artifactId>poi-ooxml</artifactId> 
            <version>3.17</version> 
        </dependency> 
        <dependency> 
            <groupId>org.slf4j</groupId> 
            <artifactId>slf4j-log4j12</artifactId> 
            <version>1.7.25</version> 
        </dependency> 
        <dependency> 
            <groupId>org.slf4j</groupId> 
            <artifactId>slf4j-api</artifactId> 
            <version>1.7.25</version> 
        </dependency> 
        <dependency> 
            <groupId>log4j</groupId> 
            <artifactId>log4j</artifactId> 
            <version>1.2.17</version> 
        </dependency> 
 
        <dependency> 
            <groupId>org.apache.kudu</groupId> 
            <artifactId>kudu-client</artifactId> 
            <version>1.7.0</version> 
        </dependency> 
        <dependency> 
            <groupId>org.json</groupId> 
            <artifactId>json</artifactId> 
            <version>20180813</version> 
        </dependency> 
        <dependency> 
            <groupId>org.glassfish.jersey.containers</groupId> 
            <artifactId>jersey-container-servlet</artifactId> 
            <version>2.9</version> 
        </dependency> 
        <dependency> 
            <groupId>org.glassfish.jersey.core</groupId> 
            <artifactId>jersey-client</artifactId> 
            <version>2.9</version> 
        </dependency> 
        <dependency> 
            <groupId>org.glassfish.jersey.media</groupId> 
            <artifactId>jersey-media-json-jackson</artifactId> 
            <version>2.9</version> 
        </dependency> 
    </dependencies>
View Code

  


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