sqoop文件:

在hive建立表和匯入資料時必須新增分隔符,否則資料匯出時會報錯

1.下載安裝

[root@node1 ~]# wget

[root@node1 ~]# tar xvf sqoop-1.4.7.bin__hadoop-2.6.0.tar.gz -C /opt/

[root@node1 ~]# cd /opt/

[root@node1 opt]# mv sqoop-1.4.7.bin__hadoop-2.6.0/ sqoop-1.4.7

[root@node1 opt]# vim /etc/profile

export SQOOP_HOME=/opt/sqoop-1.4.7

export HADOOP_HOME=/opt/hadoop-2.8.5

export HADOOP_CLASSPATH=/opt/hive-2.3.4/lib/*

export HCAT_HOME=/opt/sqoop-1.4.7/testdata/hcatalog

export ACCUMULO_HOME=/opt/sqoop-1.4.7/src/java/org/apache/sqoop/accumulo

export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$JAVA_HOME/bin:$SQOOP_HOME/bin

[root@node1 opt]# source /etc/profile

[root@node1 opt]# sqoop help --幫助資訊

[root@node1 opt]# sqoop import --help --引數幫助資訊

2.修改yarn配置檔案

[root@node1 ~]# vim /opt/hadoop-2.8.5/etc/hadoop/yarn-site.xml

    <property>
        <name>yarn.nodemanager.resource.memory-mb</name>
        <value>2048</value>
    </property>
    <property>
        <name>yarn.nodemanager.resource.cpu-vcores</name>
        <value>2</value>
    </property>

[root@node1 ~]# scp /opt/hadoop-2.8.5/etc/hadoop/yarn-site.xml node2:/opt/hadoop-2.8.5/etc/hadoop/ --將配置檔案複製到各節點

yarn-site.xml 100% 1414 804.3KB/s 00:00

[root@node1 ~]# scp /opt/hive-2.3.4/conf/hive-site.xml /opt/sqoop-1.4.7/conf/ --hive的配置檔案也要放在sqoop下面,因為sqoop要呼叫hive

[root@node1 ~]# stop-all.sh

[root@node1 ~]# start-all.sh

3.將mysql資料匯入到HDFS

引數解釋:

--append 追加資料

--as-textfile 匯入後形成文字檔案

--columns 只匯入哪些欄位

--delete-target-dir --如果匯入的目錄存在先刪除再匯入

--fetch-size <n> --每次讀多少資料

-m --起多少任務

-e --查詢語句(select)

--table <table-name> --表名

--target-dir dir --指定HDFS目錄

--warehouse-dir dir --匯入的表將在此目錄之下(表名與目錄名一至)

--where where clause --where條件

-z --資料壓縮

--direct --繞過mysql資料庫,直接匯入(憂化引數)

[root@node1 ~]# sqoop import --connect jdbc:mysql://172.16.9.100/hive --username hive --password system --table TBL_PRIVS --target-dir /user/sqoop --direct -m 1 --fields-terminated-by '\t'

[root@node1 ~]# hdfs dfs -ls /user/sqoop --檢視匯入的目錄

Found 2 items

-rw-r--r-- 3 root supergroup 0 2019-03-19 12:43 /user/sqoop/_SUCCESS

-rw-r--r-- 3 root supergroup 176 2019-03-19 12:43 /user/sqoop/part-m-00000

[root@node1 ~]# hdfs dfs -cat /user/sqoop/part-m-00000 --檢視匯入的資料

6,1552878877,1,root,USER,root,USER,INSERT,6

7,1552878877,1,root,USER,root,USER,SELECT,6

8,1552878877,1,root,USER,root,USER,UPDATE,6

9,1552878877,1,root,USER,root,USER,DELETE,6

[root@node1 ~]#

4.將mysql資料匯入到hive中

引數詳解:

--hive-home dir 指定hive目錄

--hive-import 匯入到hive

--hive-database 匯入指定的庫

--hive-overwrite 覆蓋到hive

--create-hive-table 在hive中建立表

--hive-table table-name 指定hive表名

--hive-partition-value v hive分割槽

[root@node1 ~]# sqoop import --connect jdbc:mysql://172.16.9.100/hive --username hive --password system --table TBL_PRIVS --target-dir /user/tmp --hive-import --hive-table tt -m 1 --create-hive-table --delete-target-dir --direct --fields-terminated-by '\t'

[root@node1 conf]# hive

Logging initialized using configuration in jar:file:/opt/hive-2.3.4/lib/hive-common-2.3.4.jar!/hive-log4j2.properties Async: true

Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.

hive> show tables;

OK

tt

Time taken: 11.464 seconds, Fetched: 1 row(s)

hive> select * from tt;

OK

6 1552878877 1 root USER root USER INSERT 6

7 1552878877 1 root USER root USER SELECT 6

8 1552878877 1 root USER root USER UPDATE 6

9 1552878877 1 root USER root USER DELETE 6

Time taken: 3.978 seconds, Fetched: 4 row(s)

hive>

5.將mysql資料匯入到hive指定的庫中

[root@node1 ~]# sqoop import --connect jdbc:mysql://172.16.9.100/hive --username hive --password system --table TABLE_PARAMS --hive-import --hive-table tt1 -m 1 --create-hive-table --hive-database tong --direct --fields-terminated-by '\t'

[root@node1 conf]# hive

Logging initialized using configuration in jar:file:/opt/hive-2.3.4/lib/hive-common-2.3.4.jar!/hive-log4j2.properties Async: true

Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.

hive> use tong;

OK

Time taken: 14.34 seconds

hive> show tables;

OK

tt1

Time taken: 0.374 seconds, Fetched: 1 row(s)

hive> select * from tt1;

OK

6 numFiles 1

6 numRows 0

6 rawDataSize 0

6 totalSize 8

6 transient_lastDdlTime 1552878901

11 comment Imported by sqoop on 2019/03/19 15:36:21

11 numFiles 1

11 numRows 0

11 rawDataSize 0

11 totalSize 176

11 transient_lastDdlTime 1552981011

16 comment Imported by sqoop on 2019/03/19 16:04:22

16 numFiles 1

16 numRows 0

16 rawDataSize 0

16 totalSize 239

16 transient_lastDdlTime 1552982688

Time taken: 3.004 seconds, Fetched: 17 row(s)

hive>

6.將HDFS的資料匯入到mysql中

[root@node1 ~]# hdfs dfs -cat /user/tmp/part-m-00000

1 2

3 4

5 6

[root@node1 ~]# sqoop export --connect jdbc:mysql://172.16.9.100/tong --username tong --password system --export-dir /user/tmp/part-m-00000 --table t1 --direct --fields-terminated-by '\t'

[root@node1 ~]# mysql -u root -psystem

Welcome to the MariaDB monitor. Commands end with ; or \g.

Your MySQL connection id is 1006876

Server version: 5.6.35 MySQL Community Server (GPL)

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MySQL [(none)]> use tong

MySQL [tong]> select * from t1;

+------+------+

| a | b |

+------+------+

| 3 | 4 |

| 5 | 6 |

| 1 | 2 |

+------+------+

3 rows in set (0.00 sec)

MySQL [tong]>

報錯資訊:(卡在Running job不動,不向下執行)

19/03/19 11:20:09 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1552965562217_0001

19/03/19 11:20:10 INFO impl.YarnClientImpl: Submitted application application_1552965562217_0001

19/03/19 11:20:10 INFO mapreduce.Job: The url to track the job:

19/03/19 11:20:10 INFO mapreduce.Job: Running job: job_1552965562217_0001

解決方法:

[root@node1 ~]# vim /opt/hadoop-2.8.5/etc/hadoop/yarn-site.xml --限制記憶體,cpu的資源,並將配置檔案同步到其它node,重啟hadoop服務

    <property>
        <name>yarn.nodemanager.resource.memory-mb</name>
        <value>2048</value>
    </property>
    <property>
        <name>yarn.nodemanager.resource.cpu-vcores</name>
        <value>2</value>
    </property>

[root@node1 ~]#

報錯資訊:(mysql匯入到hive中)

19/03/19 14:34:25 INFO hive.HiveImport: Loading uploaded data into Hive

19/03/19 14:34:25 ERROR hive.HiveConfig: Could not load org.apache.hadoop.hive.conf.HiveConf. Make sure HIVE_CONF_DIR is set correctly.

19/03/19 14:34:25 ERROR tool.ImportTool: Import failed: java.io.IOException: java.lang.ClassNotFoundException: org.apache.hadoop.hive.conf.HiveConf

at org.apache.sqoop.hive.HiveConfig.getHiveConf(HiveConfig.java:50)

at org.apache.sqoop.hive.HiveImport.getHiveArgs(HiveImport.java:392)

at org.apache.sqoop.hive.HiveImport.executeExternalHiveScript(HiveImport.java:379)

解決方法:

[root@node1 ~]# vim /etc/profile --新增lib變數

export HADOOP_CLASSPATH=/opt/hive-2.3.4/lib/*

[root@node1 ~]# source /etc/profile

報錯資訊:(是因為sqoop和hive的jackson包衝突)

19/03/19 15:32:11 INFO ql.Driver: Concurrency mode is disabled, not creating a lock manager

19/03/19 15:32:11 INFO ql.Driver: Executing command(queryId=root_20190319153153_63feddd9-a2c8-4217-97d4-23dd9840a54b): CREATE TABLE `tt` ( `TBL_GRANT_ID` BIGINT, `CREATE_TIME` INT,

`GRANT_OPTION` INT, `GRANTOR` STRING, `GRANTOR_TYPE` STRING, `PRINCIPAL_NAME` STRING, `PRINCIPAL_TYPE` STRING, `TBL_PRIV` STRING, `TBL_ID` BIGINT) COMMENT 'Imported by sqoop on 2019/03/19

15:31:49' ROW FORMAT DELIMITED FIELDS TERMINATED BY '\001' LINES TERMINATED BY '\012' STORED AS TEXTFILE

19/03/19 15:32:11 INFO ql.Driver: Starting task [Stage-0:DDL] in serial mode

19/03/19 15:32:12 ERROR exec.DDLTask: java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.ObjectMapper.readerFor(Ljava/lang/Class;)Lcom/fasterxml/jackson/databind/ObjectReader;

at org.apache.hadoop.hive.common.StatsSetupConst$ColumnStatsAccurate.<clinit>(StatsSetupConst.java:165)

at org.apache.hadoop.hive.common.StatsSetupConst.parseStatsAcc(StatsSetupConst.java:297)

at org.apache.hadoop.hive.common.StatsSetupConst.setBasicStatsState(StatsSetupConst.java:230)

at org.apache.hadoop.hive.common.StatsSetupConst.setBasicStatsStateForCreateTable(StatsSetupConst.java:292)

解決方法:

[root@node1 ~]# mv /opt/sqoop-1.4.7/lib/jackson-* /home/

[root@node1 ~]# cp -a /opt/hive-2.3.4/lib/jackson-* /opt/sqoop-1.4.7/lib/

報錯資訊:

19/03/19 18:38:40 INFO metastore.HiveMetaStore: 0: Done cleaning up thread local RawStore

19/03/19 18:38:40 INFO HiveMetaStore.audit: ugi=root ip=unknown-ip-addr cmd=Done cleaning up thread local RawStore

19/03/19 18:38:40 ERROR tool.ImportTool: Import failed: java.io.IOException: Hive CliDriver exited with status=1

at org.apache.sqoop.hive.HiveImport.executeScript(HiveImport.java:355)

at org.apache.sqoop.hive.HiveImport.importTable(HiveImport.java:241)

at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:537)

at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:628)

解決方法:

create table t1(a int,b int) row format delimited fields terminated by '\t'; --建立表時必須加分隔符

sqoop import --connect jdbc:mysql://172.16.9.100/hive --username hive --password system --table TBL_PRIVS --target-dir /user/sqoop --direct -m 1 --fields-terminated-by '\t'

sqoop1.4.7環境搭建及mysql資料匯入匯出到hive

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