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Rebel · ‎01-20-2016

Hi,

Hoping someone can advise. I am playing around with Sqoop. I can list the databases using:

sqoop list-databases --connect jdbc:mysql://127.0.0.1:3306 --username hue --password 1111

And I can list the tables:

sqoop list-tables --connect "jdbc:mysql://127.0.0.1:3306/test" --username hue --password 1111

However, when I try an import, I get an error:

sqoop import \

--connect "jdbc:mysql://127.0.0.1:3306/test" \

--username hue --password 1111 \

--table testtbl \

--target-dir /user/guest/mysqlimport

The error is below. I am not sure why this code is causing an error. Does anyone have any ideas?

Regards

Rev

Warning: /usr/hdp/2.3.2.0-2950/accumulo does not exist! Accumulo imports will fail.     
Please set $ACCUMULO_HOME to the root of your Accumulo installation.                    
16/01/20 17:38:31 INFO sqoop.Sqoop: Running Sqoop version: 1.4.6.2.3.2.0-2950           
16/01/20 17:38:31 WARN tool.BaseSqoopTool: Setting your password on the command-line is 
insecure. Consider using -P instead.                                                    
16/01/20 17:38:31 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultse
t.                                                                                      
16/01/20 17:38:31 INFO tool.CodeGenTool: Beginning code generation                      
SLF4J: Class path contains multiple SLF4J bindings.                                     
SLF4J: Found binding in [jar:file:/usr/hdp/2.3.2.0-2950/hadoop/lib/slf4j-log4j12-1.7.10.
jar!/org/slf4j/impl/StaticLoggerBinder.class]                                           
SLF4J: Found binding in [jar:file:/usr/hdp/2.3.2.0-2950/zookeeper/lib/slf4j-log4j12-1.6.
1.jar!/org/slf4j/impl/StaticLoggerBinder.class]                                         
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. 
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]                    
16/01/20 17:38:31 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tes
ttbl` AS t LIMIT 1                                                                      
16/01/20 17:38:31 ERROR manager.SqlManager: Error reading from database: java.sql.SQLExc
eption: Streaming result set com.mysql.jdbc.RowDataDynamic@4b1aa70c is still active. No 
statements may be issued when any streaming result sets are open and in use on a given c
onnection. Ensure that you have called .close() on any active streaming result sets befo
re attempting more queries.                                                             
java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@4b1aa70c is st
ill active. No statements may be issued when any streaming result sets are open and in u
se on a given connection. Ensure that you have called .close() on any active streaming r
esult sets before attempting more queries.                                              
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:934)                
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)                
        at com.mysql.jdbc.MysqlIO.checkForOutstandingStreamingData(MysqlIO.java:2735)   
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1899)                        
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2151)                     
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2619)              
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2569)              
        at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1524)           
        at com.mysql.jdbc.ConnectionImpl.getMaxBytesPerChar(ConnectionImpl.java:3003)   
        at com.mysql.jdbc.Field.getMaxBytesPerCharacter(Field.java:602)                 
        at com.mysql.jdbc.ResultSetMetaData.getPrecision(ResultSetMetaData.java:445)    
        at org.apache.sqoop.manager.SqlManager.getColumnInfoForRawQuery(SqlManager.java:
286)                                                                                    
        at org.apache.sqoop.manager.SqlManager.getColumnTypesForRawQuery(SqlManager.java
:241)                                                                                   
        at org.apache.sqoop.manager.SqlManager.getColumnTypes(SqlManager.java:227)      
        at org.apache.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:295)    
        at org.apache.sqoop.orm.ClassWriter.getColumnTypes(ClassWriter.java:1845)       
        at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1645)             
        at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:107)          
        at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)            
        at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:605)                    
        at org.apache.sqoop.Sqoop.run(Sqoop.java:148)                                   
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)                    
        at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:184)                              
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:226)                               
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:235)                               
        at org.apache.sqoop.Sqoop.main(Sqoop.java:244)                                  
16/01/20 17:38:31 ERROR tool.ImportTool: Encountered IOException running import job: jav
a.io.IOException: No columns to generate for ClassWriter                                
        at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1651)             
        at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:107)          
        at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)            
        at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:605)                    
        at org.apache.sqoop.Sqoop.run(Sqoop.java:148)                                   
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)                    
        at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:184)                              
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:226)                               
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:235)                               
        at org.apache.sqoop.Sqoop.main(Sqoop.java:244)

jkotireddy · ‎01-20-2016

@Revlin Abbi - That error is because of wrong version of mysql connector jar file.

ls -l /usr/share/java/mysql*

if you want to over come the problem.

please use --driver com.mysql.jdbc.Driver

it will solve the issues, but recommendation is to use the right version of mysql connector jar.

View solution in original post

aervits · ‎01-21-2016

Run as user guest not root. @Revlin Abbi

nsabharwal · ‎01-21-2016

@Revlin Abbi

ERROR tool.ImportTool:EncounteredIOException running import job: org.apache.hadoop.

security.AccessControlException:Permission denied: user=root, access=WRITE, inode="/user/root/.staging

":hdfs:hdfs:drwxr-xr-x

fix:

su - hdfs

hdfs dfs -chown -R root:hdfs /user/root

exit

then run the job

Rebel · ‎01-22-2016

Hi, Just tried that:

[root@sandbox ~]# su - hdfs                                                                            
[hdfs@sandbox ~]$ hdfs dfs -chown -R root:hdfs /user/root

but I get:

chown: `/user/root': No such file or directory

aervits · ‎01-22-2016

sudo -u hdfs dfs -mkdir /user/root

Then chown @Revlin Abbi

nsabharwal · ‎01-22-2016

@Revlin Abbi

su - hdfs

hdfs dfs -mkdir -p /user/root

hdfs dfs -chown -R root:hdfs /user/root

Rebel · ‎01-22-2016

Perfect, thanks guys! It works now.

aervits · ‎02-02-2016

@Revlin Abbi are you still having issues with this? Can you accept best answer or provide your own solution?

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Sqoop import data