spark+carbondata使用
一、部署
下载源码编译
修改配置文件
注意： 1.1.1 不支持spark2.2 会报错。
二、启动：
spark-shell –jars carbonlib/carbondata_2.11-1.1.1-shade-hadoop2.7.2.jar
三、使用
3.1创建上下文
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.CarbonSession._
val carbon = SparkSession.builder().config(sc.getConf).getOrCreateCarbonSession("hdfs://127.0.0.1:9000/user/carbon/carbonstore")
carbon.sql("show tables")
3.2创表
carbon.sql("CREATE TABLE dtwave_dev.carbon_tablename_new (name String, PhoneNumber String) STORED BY 'carbondata'")
carbon.sql("insert into table dtwave_dev.carbon_tablename_new select * from dtwave_dev.spark_test")
carbon.sql("select * from dtwave_dev.carbon_tablename_new").show
3.3 入库：
SQL:
CREATE TABLE tablename (name String, PhoneNumber String) STORED BY "carbondata"
TBLPROPERTIES (...)
LOAD DATA [LOCAL] INPATH 'folder path' [OVERWRITE] INTO TABLE tablename OPTIONS(...)
INSERT INTO TABLE tablennme select_statement1 FROM table1;
DataFrame:
df.write.format(“carbondata").options("tableName", "t1")) .mode(SaveMode.Overwrite).save()
3.4 查询：
SELECT project_list FROM t1 WHERE cond_list GROUP BY columns ORDER BY columns
3.5 更新和删除
更新一列
UPDATE table1 A
SET A.REVENUE = A.REVENUE - 10 WHERE A.PRODUCT = 'phone'
Modify two columns in table1
更新两列
UPDATE table1 A
SET (A.PRODUCT, A.REVENUE) =
(
SELECT PRODUCT, REVENUE
FROM table2 B
WHERE B.CITY = A.CITY AND B.BROKER = A.BROKER
)
WHERE A.DATE BETWEEN '2017-01-01' AND '2017-01-31'
3.6 插入
scala> carbon.sql("insert into table dtwave_dev.carbon_tablename_new select * from dtwave_dev.carbon_tablename_new")
17/09/20 16:51:56 AUDIT rdd.CarbonDataRDDFactory$: [hulbdeMacBook-Air.local][hulb][Thread-1]Data load request has been received for table dtwave_dev.carbon_tablename_new
17/09/20 16:51:56 WARN util.CarbonDataProcessorUtil: [Executor task launch worker-7][partitionID:new;queryID:164589401701872] sort scope is set to LOCAL_SORT
17/09/20 16:51:56 WARN util.CarbonDataProcessorUtil: [Executor task launch worker-7][partitionID:new;queryID:164589401701872] batch sort size is set to 0
17/09/20 16:51:56 WARN util.CarbonDataProcessorUtil: [Executor task launch worker-7][partitionID:new;queryID:164589401701872] sort scope is set to LOCAL_SORT
17/09/20 16:53:28 AUDIT rdd.CarbonDataRDDFactory$: [hulbdeMacBook-Air.local][hulb][Thread-1]Data load is successful for dtwave_dev.carbon_tablename_new
carbon.sql("select count(1) from dtwave_dev.carbon_tablename_new").show
3.6 删除
DELETE FROM table1 A WHERE A.CUSTOMERID = ‘123’
scala> carbon.sql("select * from dtwave_dev.carbon_tablename_new").show
+----+-----------+
|name|PhoneNumber|
+----+-----------+
| 1| 2|
| 3| 4|
+----+-----------+
scala> carbon.sql("delete from dtwave_dev.carbon_tablename_new a WHERE a.name='1'")
17/09/20 14:51:43 AUDIT command.ProjectForDeleteCommand: [hulbdeMacBook-Air.local][hulb][Thread-1] Delete data request has been received for dtwave_dev.carbon_tablename_new.
17/09/20 14:51:47 AUDIT command.deleteExecution$: [hulbdeMacBook-Air.local][hulb][Thread-1]Delete data operation is successful for dtwave_dev.carbon_tablename_new
res1: org.apache.spark.sql.DataFrame = []
scala> carbon.sql("select * from dtwave_dev.carbon_tablename_new").show
+----+-----------+
|name|PhoneNumber|
+----+-----------+
| 3| 4|
+----+-----------+
carbon.sql("update dtwave_dev.carbon_tablename_new A SET (A.name) = A.name WHERE A.PhoneNumber = '4'")
carbon.sql("UPDATE dtwave_dev.carbon_tablename_new a SET (a.name, a.PhoneNumber) = ( SELECT '5' as name ,'6' from dtwave_dev.carbon_tablename_new b)")
carbon.sql("UPDATE dtwave_dev.carbon_tablename_new a SET (a.name, a.PhoneNumber) = ( SELECT '5' as name ,'6' as PhoneNumber)")
四、HDFS对应的文件
4.1 HDFS 目录：
/user/carbon/carbonstore/dtwave_dev/carbon_tablename_new
drwxr-xr-x hulb supergroup 0 B 0 0 B Fact
drwxr-xr-x hulb supergroup 0 B 0 0 B Metadata
4.2 数据文件
/user/carbon/carbonstore/dtwave_dev/carbon_tablename_new/Fact/Part0
Permission Owner Group Size Replication Block Size Name
drwxr-xr-x hulb supergroup 0 B 0 0 B Segment_0
drwxr-xr-x hulb supergroup 0 B 0 0 B Segment_1
4.3 元数据文件
/user/carbon/carbonstore/dtwave_dev/carbon_tablename_new/Metadata
Go!
Permission Owner Group Size Replication Block Size Name
-rw-r--r-- hulb supergroup 16 B 2 128 MB 62acf472-3574-434e-a53f-f45901dff949.dict
-rw-r--r-- hulb supergroup 11 B 2 128 MB 62acf472-3574-434e-a53f-f45901dff949.dictmeta
-rw-r--r-- hulb supergroup 11 B 2 128 MB 62acf472-3574-434e-a53f-f45901dff949_16.sortindex
-rw-r--r-- hulb supergroup 16 B 2 128 MB c5c7949a-a437-41d1-8f47-a7a81e68c4ba.dict
-rw-r--r-- hulb supergroup 11 B 2 128 MB c5c7949a-a437-41d1-8f47-a7a81e68c4ba.dictmeta
-rw-r--r-- hulb supergroup 11 B 2 128 MB c5c7949a-a437-41d1-8f47-a7a81e68c4ba_16.sortindex
-rw-r--r-- hulb supergroup 387 B 2 128 MB schema
-rw-r--r-- hulb supergroup 7.37 KB 2 128 MB tablestatus
-rw-r--r-- hulb supergroup 243 B 2 128 MB tableupdatestatus-1505890299461