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Cloudera, BigData, Semantic IoT, Hadoop, NoSQL

Cloudera CDH/CDP 및 Hadoop EcoSystem, Semantic IoT등의 개발/운영 기술을 정리합니다. gooper@gooper.com로 문의 주세요.


1. hive table(file을 바라보고 있으며 hbase table(아래의 hbase_mytable)에 값을 넣기 위한 src table) 을  external로  table 생성

CREATE EXTERNAL TABLE IF NOT EXISTS external_file
     (
     FOO STRING,
     BAR STRING
     )
     COMMENT 'TEST TABLE OF EMP_IP_TABLE'
     ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
     STORED AS TEXTFILE LOCATION '/data';

 

* /data에 들어 있는 파일 내용

hadoop@bigdata-host:~/hive/conf$ hadoop fs -cat /data/external_file.txt
a,b
a1,b1
a2,b2
a3,b3

2.hive table( hbase  table을 바라보는 테이블)생성

CREATE EXTERNAL TABLE hbase_mytable(table_id string, foo string, bar string)
STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
WITH SERDEPROPERTIES ("hbase.columns.mapping" = ":key,cf:foo,cf:bar")
TBLPROPERTIES("hbase.table.name" = "mytable");

 

3. hive기동시 아래와 같이 jar를 포함해준다.

adoop@bigdata-host:~/hive/bin$ hive --auxpath /home/hadoop/hive/lib/hbase-0.94.6.1.jar,/home/hadoop/hive/lib/zookeeper-3.4.3.jar,/home/hadoop/hive/lib/hive-hbase-handler-0.11.0.jar,/home/hadoop/hive/lib/guava-11.0.2.jar,/home/hadoop/hive/lib/hive-contrib-0.11.0.jar -hiveconf hbase.master=localhost:60000

4. hive에 들어가서.. table을 생성한 후 hbase table에 입력 실행결과......

hive> insert into table hbase_mytable select foo, foo, bar from external_file;
Total MapReduce jobs = 1
Launching Job 1 out of 1
Number of reduce tasks is set to 0 since there's no reduce operator
Starting Job = job_201404111158_0008, Tracking URL = http://localhost:50030/jobdetails.jsp?jobid=job_201404111158_0008
Kill Command = /home/hadoop/hadoop-1.2.1/libexec/../bin/hadoop job  -kill job_201404111158_0008
Hadoop job information for Stage-0: number of mappers: 1; number of reducers: 0
2014-04-11 13:56:49,322 Stage-0 map = 0%,  reduce = 0%
2014-04-11 13:56:55,482 Stage-0 map = 100%,  reduce = 0%, Cumulative CPU 1.74 sec
2014-04-11 13:56:56,500 Stage-0 map = 100%,  reduce = 0%, Cumulative CPU 1.74 sec
2014-04-11 13:56:57,518 Stage-0 map = 100%,  reduce = 0%, Cumulative CPU 1.74 sec
2014-04-11 13:56:58,541 Stage-0 map = 100%,  reduce = 0%, Cumulative CPU 1.74 sec
2014-04-11 13:56:59,561 Stage-0 map = 100%,  reduce = 0%, Cumulative CPU 1.74 sec
2014-04-11 13:57:00,587 Stage-0 map = 100%,  reduce = 100%, Cumulative CPU 1.74 sec
MapReduce Total cumulative CPU time: 1 seconds 740 msec
Ended Job = job_201404111158_0008
4 Rows loaded to hbase_mytable
MapReduce Jobs Launched:
Job 0: Map: 1   Cumulative CPU: 1.74 sec   HDFS Read: 220 HDFS Write: 0 SUCCESS
Total MapReduce CPU Time Spent: 1 seconds 740 msec
OK
Time taken: 34.565 seconds

5. hbase_mytable의 값  확인(기존에 있던 값하고 새로 추가된 값이 같이 보인다.)

hive> select * from hbase_mytable;                                           
OK
2.5 1.3 NULL
a a b
a1 a1 b1
a2 a2 b2
a3 a3 b3
second 3 NULL
third NULL 3.14159
Time taken: 1.315 seconds, Fetched: 7 row(s)

6. hbase shell에서 확인

hbase(main):001:0> scan 'mytable'
ROW                        COLUMN+CELL                                                               
 2.5                       column=cf:foo, timestamp=1397112248576, value=1.3                         
 a                         column=cf:bar, timestamp=1397192214568, value=b                           
 a                         column=cf:foo, timestamp=1397192214568, value=a                           
 a1                        column=cf:bar, timestamp=1397192214568, value=b1                          
 a1                        column=cf:foo, timestamp=1397192214568, value=a1                          
 a2                        column=cf:bar, timestamp=1397192214568, value=b2                          
 a2                        column=cf:foo, timestamp=1397192214568, value=a2                          
 a3                        column=cf:bar, timestamp=1397192214568, value=b3                          
 a3                        column=cf:foo, timestamp=1397192214568, value=a3                          
 first                     column=cf:message, timestamp=1397109873612, value=hellp Hbase             
 second                    column=cf:foo, timestamp=1397112803662, value=3                           
 second2                   column=cf:foo2, timestamp=1397112883691, value=3                          
 third                     column=cf:bar, timestamp=1397109940598, value=3.14159                     
9 row(s) in 1.8090 seconds

 

 

번호 제목 날짜 조회 수
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100 Journal Storage Directory /data/hadoop/journal/data/mycluster not formatted 오류시 조치사항 2016.07.29 1603
99 우분투 16.04 LTS에 apache2와 tomcat7 연동하여 설치하기 2014.05.09 1605
98 oozie의 meta정보를 mysql에서 관리하기 2014.05.26 1605
97 flume 1.5.2 설치및 테스트(source : file, sink : hdfs) in HA 2015.05.21 1609
96 upsert구현방법(년-월-일 파티션을 기준으로) 및 테스트 script file 2018.07.03 1616
95 jsoup 사용 예제 2014.06.06 1630
94 Jena 2.3를 Hadoop 2.7.2의 NFS로 mount하고 fuseki를 이용하여 start할때 오류 메세지 2016.12.02 1644
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90 Cloudera Manager설치및 Uninstall 방법(순서) 2018.05.28 1730
89 physical memory used되면서 mapper가 kill되는 경우 오류 발생시 조치 2018.09.20 1759
88 index생성, 삭제, 활용 2014.04.25 1766
87 access=WRITE, inode="staging":ubuntu:supergroup:rwxr-xr-x 오류 2014.07.05 1793
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85 hue db에서 사용자가 가지는 정보 확인 2020.02.10 1830
84 [ftgo_application]Unable to infer base url오류 발생시 조치방법 2023.02.20 1830
83 갑자기 DataNode가 java.io.IOException: Premature EOF from inputStream를 반복적으로 발생시키다가 java.lang.OutOfMemoryError: Java heap space를 내면서 죽는 경우 조치방법 2017.07.19 1836
82 impald에서 idle_query_timeout 와 idle_session_timeout 구분 2021.05.20 1870
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