Centos7安裝Sqoop(CentOS7+Sqoop1.4.6+Hadoop2.8.0+Hive2.1.1)
註意:本文只講Sqoop1.4.6的安裝。和hive一樣,sqoop只需要在hadoop的namenode上安裝即可。本例安裝sqoop的機器上已經安裝了hdoop2.8.0和hive2.1.1,hadoop2.8.0的安裝請參考博文:
http://blog.csdn.net/pucao_cug/article/details/71698903
hive2.1.1的安裝請參考博文:
http://blog.csdn.net/pucao_cug/article/details/71773665
1下載Sqoop
因為官方並不建議在生產環境中使用1.99.7版本,所以我們還是等2.0版本出來在用新的吧,現在依然使用1.4.6版本
打開官網:
http://sqoop.apache.org/
如圖:
點擊上圖的nearby mirror
相當於是直接打開:http://www.apache.org/dyn/closer.lua/sqoop/
如圖:
我選擇的是http://mirror.bit.edu.cn/apache/sqoop/
如圖:
點擊1.4.6,相當於是直接打開地址:
http://mirror.bit.edu.cn/apache/sqoop/1.4.6/
如圖:
2上載和解壓縮
在opt目錄下新建一個名為sqoop的目錄,將下載得到的文件sqoop-1.4.6.bin__hadoop-2.0.4-alpha.tar上載到該目錄內
如圖:
進入到該目錄下,執行解壓縮,也就是執行命令:
cd /opt/sqoop
tar -xvf sqoop-1.4.6.bin__hadoop-2.0.4-alpha.tar.gz
命令執行完成後得到了/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha目錄
3一系列配置
3.1 配置環境變量
編輯/etc/profile文件,添加SQOOP_HOME變量,並且將$SQOOP_HOME/bin添加到PATH變量中,編輯方法很多,可以將profile文件下載到本地編輯,也可以直接用vim命令編輯。
添加的內容如下:
export JAVA_HOME=/opt/java/jdk1.8.0_121
export HADOOP_HOME=/opt/hadoop/hadoop-2.8.0
export HADOOP_CONF_DIR=${HADOOP_HOME}/etc/hadoop
export HADOOP_COMMON_LIB_NATIVE_DIR=${HADOOP_HOME}/lib/native
export HADOOP_OPTS="-Djava.library.path=${HADOOP_HOME}/lib"
export HIVE_HOME=/opt/hive/apache-hive-2.1.1-bin
export HIVE_CONF_DIR=${HIVE_HOME}/conf
export SQOOP_HOME=/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha
export CLASS_PATH=.:${JAVA_HOME}/lib:${HIVE_HOME}/lib:$CLASS_PATH
export PATH=.:${JAVA_HOME}/bin:${HADOOP_HOME}/bin:${HADOOP_HOME}/sbin: ${HIVE_HOME}/bin:${SQOOP_HOME}/bin:$PATH
/etc/profile文件編輯完成後,執行命令:
source /etc/profile
3.2 Sqoop配置文件修改
3.2.1 sqoop-env.sh文件
3.2.1.1 新建
進入到/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/conf目錄下,也就是執行命令:
cd /opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/conf
將sqoop-env-template.sh復制一份,並取名為sqoop-env.sh,也就是執行命令:
cp sqoop-env-template.sh sqoop-env.sh
如圖:
3.2.1.2 編輯內容
編輯這個新建的sqoop-env.sh文件,編輯方法有很多,可以下載到本地編輯,也可是使用vim命令編輯。
在該文件末尾加入下面的配置:
export HADOOP_COMMON_HOME=/opt/hadoop/hadoop-2.8.0
export HADOOP_MAPRED_HOME=/opt/hadoop/hadoop-2.8.0
export HIVE_HOME=/opt/hive/apache-hive-2.1.1-bin
說明:上面的路徑修改為自己的hadoop路徑和hive路徑。
3.3 將MySQL驅動包上載到Sqoop的lib下
將MySQL的驅動包上載到Sqoop安裝目錄的lib子目錄下
如圖:
說明:該驅動不是越舊越好,也不是越新越好,5.1.31我這裏測試是可以的。
4 使用sqoop
sqoop是一個工具,安裝完成後,如果操作的命令不涉及hive和hadoop的,可以實現不啟動hive和hadoop,直接輸入sqoop命令即可,例如sqoop help命令。要使用hive相關的命令,必須事先啟動hive和hadoop。
hadoop的安裝和啟動可以參考該博文:
http://blog.csdn.net/pucao_cug/article/details/71698903
hive的安裝和啟動可以參考該博文:
http://blog.csdn.net/pucao_cug/article/details/71773665
4.1 使用help命令
首先看看sqoop都有哪些命令,在終上輸入命令:
sqoop help
如圖:
上圖中的內容是:
- [root@hserver1 ~]# sqoop help
- Warning:/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../hbase does not exist! HBaseimports will fail.
- Please set $HBASE_HOME to the root of yourHBase installation.
- Warning:/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../hcatalog does not exist! HCatalogjobs will fail.
- Please set $HCAT_HOME to the root of yourHCatalog installation.
- Warning:/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../accumulo does not exist!Accumulo imports will fail.
- Please set $ACCUMULO_HOME to the root ofyour Accumulo installation.
- Warning:/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../zookeeper does not exist!Accumulo imports will fail.
- Please set $ZOOKEEPER_HOME to the root ofyour Zookeeper installation.
- 17/05/14 16:21:30 INFO sqoop.Sqoop: RunningSqoop version: 1.4.6
- usage: sqoop COMMAND [ARGS]
- Available commands:
- codegen Generate codeto interact with database records
- create-hive-table Import a tabledefinition into Hive
- eval Evaluate a SQLstatement and display the results
- export Export an HDFS directory to adatabase table
- help List availablecommands
- import Import a tablefrom a database to HDFS
- import-all-tables Import tablesfrom a database to HDFS
- import-mainframe Import datasetsfrom a mainframe server to HDFS
- job Work with savedjobs
- list-databases List availabledatabases on a server
- list-tables List availabletables in a database
- merge Merge resultsof incremental imports
- metastore Run astandalone Sqoop metastore
- version Display versioninformation
- See ‘sqoop help COMMAND‘ for information ona specific command.
- [root@hserver1 ~]#
說明:因為我們沒有基於hadoop安裝HBase,所以HBase相關的命令不能用,但是操作hadoop分布式文件系統的命令是可以用的。
4.2 使用Sqoop查看MySQL中的數據表
下面是使用命令查看MySQL數據庫中的數據表list,命令是(命令中不能有回車,必須是在同一行,復制粘貼時候請註意):
- sqoop list-tables --username root --password ‘cj‘ --connect jdbc:mysql://192.168.27.132:3306/hello?characterEncoding=UTF-8
如圖:
4.3 基於MySQL的表創建hive表
4.3.1 創建
註意:hive是基於hadoop的HDFS的,在運行下面的導入命令請,請確保hadoop和hive都在正常運行。
現在MySQL數據庫服務器上有一個數據庫名為 hello,下面有一張表名為people
如圖:
執行命令,在已經存在的db_hive_deu這個庫中創建名為place的表:
- sqoop create-hive-table --connect jdbc:mysql://192.168.119.132:3306/hello?characterEncoding=UTF-8 --table people --username root -password ‘cj‘ --hive-database db_hive_edu
如圖:
上圖中的內容是:
[plain] view plain copy
- [root@hserver1 ~]# sqoop create-hive-table --connect jdbc:mysql://192.168.119.132:3306/hello?characterEncoding=UTF-8 --table people --username root -password ‘cj‘ --hive-database db_hive_edu
- Warning: /opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../hbasedoes not exist! HBase imports will fail.
- Please set $HBASE_HOME to the root of your HBase installation.
- Warning: /opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../hcatalogdoes not exist! HCatalog jobs will fail.
- Please set $HCAT_HOME to the root of your HCatalog installation.
- Warning: /opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../accumulodoes not exist! Accumulo imports will fail.
- Please set $ACCUMULO_HOME to the root of your Accumulo installation.
- Warning: /opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../zookeeperdoes not exist! Accumulo imports will fail.
- Please set $ZOOKEEPER_HOME to the root of your Zookeeperinstallation.
- 17/05/14 21:06:06 INFO sqoop.Sqoop: Running Sqoop version: 1.4.6
- 17/05/14 21:06:06 WARN tool.BaseSqoopTool: Setting your password onthe command-line is insecure. Consider using -P instead.
- 17/05/14 21:06:06 INFO tool.BaseSqoopTool: Using Hive-specificdelimiters for output. You can override
- 17/05/14 21:06:06 INFO tool.BaseSqoopTool: delimiters with--fields-terminated-by, etc.
- 17/05/14 21:06:07 INFO manager.MySQLManager: Preparing to use aMySQL streaming resultset.
- 17/05/14 21:06:09 INFO manager.SqlManager: Executing SQL statement:SELECT t.* FROM `people` AS t LIMIT 1
- 17/05/14 21:06:09 INFO manager.SqlManager: Executing SQL statement:SELECT t.* FROM `people` AS t LIMIT 1
- 17/05/14 21:06:11 WARN util.NativeCodeLoader: Unable to loadnative-hadoop library for your platform... using builtin-java classes whereapplicable
- 17/05/14 21:06:16 INFO hive.HiveImport: Loading uploaded data intoHive
- 17/05/14 21:06:26 INFO hive.HiveImport: which: no hbase in (.:/opt/java/jdk1.8.0_121/bin:/opt/hadoop/hadoop-2.8.0/bin:/opt/hadoop/hadoop-2.8.0/sbin:/opt/hive/apache-hive-2.1.1-bin/bin:/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin)
- 17/05/14 21:06:29 INFO hive.HiveImport: SLF4J: Class path containsmultiple SLF4J bindings.
- 17/05/14 21:06:29 INFO hive.HiveImport: SLF4J: Found binding in[jar:file:/opt/hive/apache-hive-2.1.1-bin/lib/log4j-slf4j-impl-2.4.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
- 17/05/14 21:06:29 INFO hive.HiveImport: SLF4J: Found binding in[jar:file:/opt/hadoop/hadoop-2.8.0/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
- 17/05/14 21:06:29 INFO hive.HiveImport: SLF4J: Seehttp://www.slf4j.org/codes.html#multiple_bindings for an explanation.
- 17/05/14 21:06:58 INFO hive.HiveImport:
- 17/05/14 21:06:58 INFO hive.HiveImport: Logging initialized usingconfiguration injar:file:/opt/hive/apache-hive-2.1.1-bin/lib/hive-common-2.1.1.jar!/hive-log4j2.propertiesAsync: true
- 17/05/14 21:07:32 INFO hive.HiveImport: OK
- 17/05/14 21:07:32 INFO hive.HiveImport: Time taken: 6.657 seconds
- 17/05/14 21:07:32 INFO hive.HiveImport: Hive import complete.
- [root@hserver1 ~]#
註意:create-hive-table只是創建hive表,並沒有導入數據,導入數據的命令在4.4中講到。
4.3.2 測試
在hive命令模式下,輸入以下命令,切換到db_hive_edu數據庫中,命令是:
use db_hive_edu;
如圖:
在hive命令模式下,輸入以下命令:
show tables;
如圖:
4.4 將MySQL中的數據導入到hive中
4.4.1 執行導入命令
註意:hive是基於hadoop的HDFS的,在運行下面的導入命令請,請確保hadoop和hive都在正常運行。需要額外說明的是,下面的命令不需要以4.3為前提,也就是說直接執行下面的命令即可,不需要事先在hive上創建對應的表。
執行下面的命令(下面的命令在同一行內):
- sqoop import --connect jdbc:mysql://192.168.119.132:3306/hello?characterEncoding=UTF-8 --table place --username root -password ‘cj‘ --fields-terminated-by ‘,‘ --hive-import --hive-database db_hive_edu -m 1
如圖:
上圖中的內容是(完整的):
- [root@hserver1~]# sqoop import --connect jdbc:mysql://192.168.119.132:3306/hello?characterEncoding=UTF-8 --table place --username root -password ‘cj‘ --fields-terminated-by ‘,‘ --hive-import --hive-databasedb_hive_edu -m 1
- Warning: /opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../hbasedoes not exist! HBase imports will fail.
- Please set $HBASE_HOME to the root of yourHBase installation.
- Warning:/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../hcatalog does not exist!HCatalog jobs will fail.
- Please set $HCAT_HOME to the root of yourHCatalog installation.
- Warning:/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../accumulo does not exist!Accumulo imports will fail.
- Please set $ACCUMULO_HOME to the root ofyour Accumulo installation.
- Warning: /opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/../zookeeperdoes not exist! Accumulo imports will fail.
- Please set $ZOOKEEPER_HOME to the root ofyour Zookeeper installation.
- 17/05/14 20:44:07 INFO sqoop.Sqoop: RunningSqoop version: 1.4.6
- 17/05/14 20:44:08 WARN tool.BaseSqoopTool:Setting your password on the command-line is insecure. Consider using -Pinstead.
- 17/05/14 20:44:08 INFOmanager.MySQLManager: Preparing to use a MySQL streaming resultset.
- 17/05/14 20:44:08 INFO tool.CodeGenTool:Beginning code generation
- 17/05/14 20:44:10 INFO manager.SqlManager:Executing SQL statement: SELECT t.* FROM `place` AS t LIMIT 1
- 17/05/14 20:44:10 INFO manager.SqlManager:Executing SQL statement: SELECT t.* FROM `place` AS t LIMIT 1
- 17/05/14 20:44:10 INFOorm.CompilationManager: HADOOP_MAPRED_HOME is /opt/hadoop/hadoop-2.8.0
- Note:/tmp/sqoop-root/compile/382b047cc7e935d9ba3014747288b5f7/place.java uses oroverrides a deprecated API.
- Note: Recompile with -Xlint:deprecation fordetails.
- 17/05/14 20:44:18 INFOorm.CompilationManager: Writing jar file:/tmp/sqoop-root/compile/382b047cc7e935d9ba3014747288b5f7/place.jar
- 17/05/14 20:44:18 WARNmanager.MySQLManager: It looks like you are importing from mysql.
- 17/05/14 20:44:18 WARNmanager.MySQLManager: This transfer can be faster! Use the --direct
- 17/05/14 20:44:18 WARNmanager.MySQLManager: option to exercise a MySQL-specific fast path.
- 17/05/14 20:44:18 INFOmanager.MySQLManager: Setting zero DATETIME behavior to convertToNull (mysql)
- 17/05/14 20:44:18 INFOmapreduce.ImportJobBase: Beginning import of place
- 17/05/14 20:44:18 INFOConfiguration.deprecation: mapred.job.tracker is deprecated. Instead, usemapreduce.jobtracker.address
- 17/05/14 20:44:20 WARNutil.NativeCodeLoader: Unable to load native-hadoop library for yourplatform... using builtin-java classes where applicable
- 17/05/14 20:44:20 INFOConfiguration.deprecation: mapred.jar is deprecated. Instead, usemapreduce.job.jar
- 17/05/14 20:44:24 INFOConfiguration.deprecation: mapred.map.tasks is deprecated. Instead, usemapreduce.job.maps
- 17/05/14 20:44:25 INFO client.RMProxy:Connecting to ResourceManager at hserver1/192.168.119.128:8032
- 17/05/14 20:44:41 INFO db.DBInputFormat:Using read commited transaction isolation
- 17/05/14 20:44:42 INFOmapreduce.JobSubmitter: number of splits:1
- 17/05/14 20:44:43 INFOmapreduce.JobSubmitter: Submitting tokens for job: job_1494764774368_0001
- 17/05/14 20:44:49 INFO impl.YarnClientImpl:Submitted application application_1494764774368_0001
- 17/05/14 20:44:49 INFO mapreduce.Job: Theurl to track the job:http://hserver1:8088/proxy/application_1494764774368_0001/
- 17/05/14 20:44:49 INFO mapreduce.Job:Running job: job_1494764774368_0001
- 17/05/14 20:45:40 INFO mapreduce.Job: Jobjob_1494764774368_0001 running in uber mode : false
- 17/05/14 20:45:40 INFO mapreduce.Job: map 0% reduce 0%
- 17/05/14 20:46:21 INFO mapreduce.Job: map 100% reduce 0%
- 17/05/14 20:46:25 INFO mapreduce.Job: Jobjob_1494764774368_0001 completed successfully
- 17/05/14 20:46:25 INFO mapreduce.Job:Counters: 30
- File System Counters
- FILE: Number of bytes read=0
- FILE: Number of byteswritten=154570
- FILE: Number of readoperations=0
- FILE: Number of large readoperations=0
- FILE: Number of writeoperations=0
- HDFS: Number of bytes read=87
- HDFS: Number of byteswritten=10
- HDFS: Number of readoperations=4
- HDFS: Number of large readoperations=0
- HDFS: Number of writeoperations=2
- Job Counters
- Launched map tasks=1
- Other local map tasks=1
- Total time spent by all maps inoccupied slots (ms)=34902
- Total time spent by all reducesin occupied slots (ms)=0
- Total time spent by all maptasks (ms)=34902
- Total vcore-milliseconds takenby all map tasks=34902
- Total megabyte-millisecondstaken by all map tasks=35739648
- Map-Reduce Framework
- Map input records=2
- Map output records=2
- Input split bytes=87
- Spilled Records=0
- Failed Shuffles=0
- Merged Map outputs=0
- GC time elapsed (ms)=190
- CPU time spent (ms)=2490
- Physical memory (bytes)snapshot=102395904
- Virtual memory (bytes)snapshot=2082492416
- Total committed heap usage(bytes)=16318464
- File Input Format Counters
- Bytes Read=0
- File Output Format Counters
- Bytes Written=10
- 17/05/14 20:46:25 INFOmapreduce.ImportJobBase: Transferred 10 bytes in 121.3811 seconds (0.0824bytes/sec)
- 17/05/14 20:46:25 INFOmapreduce.ImportJobBase: Retrieved 2 records.
- 17/05/14 20:46:26 INFO manager.SqlManager:Executing SQL statement: SELECT t.* FROM `place` AS t LIMIT 1
- 17/05/14 20:46:26 INFO hive.HiveImport:Loading uploaded data into Hive
- 17/05/14 20:48:25 INFO hive.HiveImport:which: no hbase in(.:/opt/java/jdk1.8.0_121/bin:/opt/hadoop/hadoop-2.8.0/bin:/opt/hadoop/hadoop-2.8.0/sbin:/opt/hive/apache-hive-2.1.1-bin/bin:/opt/sqoop/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin)
- 17/05/14 20:48:28 INFO hive.HiveImport:SLF4J: Class path contains multiple SLF4J bindings.
- 17/05/14 20:48:28 INFO hive.HiveImport:SLF4J: Found binding in[jar:file:/opt/hive/apache-hive-2.1.1-bin/lib/log4j-slf4j-impl-2.4.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
- 17/05/14 20:48:28 INFO hive.HiveImport:SLF4J: Found binding in[jar:file:/opt/hadoop/hadoop-2.8.0/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
- 17/05/14 20:48:28 INFO hive.HiveImport:SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for anexplanation.
- 17/05/14 20:49:48 INFO hive.HiveImport:
- 17/05/14 20:49:48 INFO hive.HiveImport:Logging initialized using configuration injar:file:/opt/hive/apache-hive-2.1.1-bin/lib/hive-common-2.1.1.jar!/hive-log4j2.propertiesAsync: true
- 17/05/14 20:50:16 INFO hive.HiveImport: OK
- 17/05/14 20:50:16 INFO hive.HiveImport:Time taken: 3.735 seconds
- 17/05/14 20:50:18 INFO hive.HiveImport:Loading data to table db_hive_edu.place
- 17/05/14 20:50:20 INFO hive.HiveImport: OK
- 17/05/14 20:50:20 INFO hive.HiveImport:Time taken: 4.872 seconds
- 17/05/14 20:50:21 INFO hive.HiveImport:Hive import complete.
- 17/05/14 20:50:21 INFO hive.HiveImport:Export directory is contains the _SUCCESS file only, removing the directory.
- [root@hserver1 ~]#
4.4.2 執行hive命令測試上面的操作是否成功
切換到剛才hive命令行(為了方便,我一般都是開了個連接,一個是普通的Linux命令模式,一個是啟動hive,用於執行hive命令)。
在hive命令模式下,輸入以下命令,切換到db_hive_edu數據庫中,命令是:
use db_hive_edu;
如圖:
在hive命令模式下,輸入以下命令:
show tables;
如圖:
在hive命令模式下,輸入以下命令查看people表裏的數據:
select * from place;
如圖:
5 報錯和解決
5.1 java.net.NoRouteToHostException: No route to host (Host unreachable)
檢查你命令中的IP地址是否寫錯了,檢查命令中的--connect後面的IP地址,出現這個錯誤,往往是這個地方寫錯了。
5.2 ERROR tool.ImportTool: Error during import: Import job failed!
在執行sqoop import從MySql導出數據到hive時候報錯,完整報錯是:
java.lang.Exception:java.lang.RuntimeException: java.lang.ClassNotFoundException: Class place notfound
atorg.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:489)
atorg.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:549)
Caused by:java.lang.RuntimeException: java.lang.ClassNotFoundException: Class place notfound
atorg.apache.hadoop.conf.Configuration.getClass(Configuration.java:2216)
at org.apache.sqoop.mapreduce.db.DBConfiguration.getInputClass(DBConfiguration.java:403)
atorg.apache.sqoop.mapreduce.db.DataDrivenDBInputFormat.createDBRecordReader(DataDrivenDBInputFormat.java:237)
atorg.apache.sqoop.mapreduce.db.DBInputFormat.createRecordReader(DBInputFormat.java:263)
atorg.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.<init>(MapTask.java:515)
atorg.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:758)
atorg.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
atorg.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:270)
atjava.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
atjava.util.concurrent.FutureTask.run(FutureTask.java:266)
atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
atjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
atjava.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException:Class place not found
atorg.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2122)
atorg.apache.hadoop.conf.Configuration.getClass(Configuration.java:2214)
... 12 more
17/05/14 22:17:45 INFO mapreduce.Job:Job job_local612327026_0001 failed with state FAILED due to: NA
17/05/14 22:17:45 INFOmapreduce.Job: Counters: 0
17/05/14 22:17:46 WARNmapreduce.Counters: Group FileSystemCounters is deprecated. Useorg.apache.hadoop.mapreduce.FileSystemCounter instead
17/05/14 22:17:46 INFOmapreduce.ImportJobBase: Transferred 0 bytes in 19.1156 seconds (0 bytes/sec)
17/05/14 22:17:46 WARNmapreduce.Counters: Group org.apache.hadoop.mapred.Task$Counter is deprecated.Use org.apache.hadoop.mapreduce.TaskCounter instead
17/05/14 22:17:46 INFOmapreduce.ImportJobBase: Retrieved 0 records.
17/05/14 22:17:46 ERRORtool.ImportTool: Error during import: Import job failed!
原因:
和hadoop的配置和有關系,需要啟用yar這個mapreduce框架。
解決方法:
我的hadoop安裝路徑是/opt/hadoop/hadoop-2.8.0/。
找到/opt/hadoop/hadoop-2.8.0/etc/hadoop/mapred-site.xml配置文件,加入配置:
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
如圖:
Centos7安裝Sqoop(CentOS7+Sqoop1.4.6+Hadoop2.8.0+Hive2.1.1)