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		02-24-2016
	
	
	
	
	
	
	
	
	
	
	
	
	
	
			
      
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| Title | Views | Posted | 
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| 5369 | 12-18-2017 11:47 AM | |
| 13102 | 11-08-2017 01:54 PM | |
| 69536 | 05-06-2016 11:48 AM | 
			
    
	
		
		
		08-29-2016
	
		
		02:50 PM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 This I need to do from hadoop namenode? 
						
					
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		08-29-2016
	
		
		02:07 PM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 Query : ./sqoop import --connect jdbc:oracle:thin://<ip address>:1521/app --username APP --password APP12# --table tbemp --hive-import 
						
					
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		08-29-2016
	
		
		02:05 PM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 I am getting below error while executing SQOOP import command :
ERROR manager.SqlManager: Error executing statement: java.sql.SQLRecoverableException: IO Error: The Network Adapter could not establish the connection 
						
					
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		05-10-2016
	
		
		09:30 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 Great !!  @Bernhard Walter . Thanks for your help.  
						
					
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		05-10-2016
	
		
		09:05 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 I tried @Bernhard Walter : But I am not getting values  hive> select '_c0' from xml_table;  
Total 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_1461307169071_0063, Tracking URL = http://CDCUDHDOOPAPP02:8088/proxy/application_1461307169071_0063/
Kill Command = /chroot/hadoop/inst/hadoop/hadoop-2.4.0/bin/hadoop job  -kill job_1461307169071_0063
Hadoop job information for Stage-1: number of mappers: 1; number of reducers: 0
2016-05-10 14:33:40,593 Stage-1 map = 0%,  reduce = 0%
2016-05-10 14:33:45,811 Stage-1 map = 100%,  reduce = 0%, Cumulative CPU 0.96 sec
MapReduce Total cumulative CPU time: 960 msec
Ended Job = job_1461307169071_0063
MapReduce Jobs Launched:
Job 0: Map: 1   Cumulative CPU: 0.96 sec   HDFS Read: 265 HDFS Write: 8 SUCCESS
Total MapReduce CPU Time Spent: 960 msec  
OK   _c0  
_c0  
Time taken: 17.912 seconds, Fetched: 2 row(s) 
						
					
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		05-10-2016
	
		
		08:50 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 1) I had extracted data from xml .  2) I am getting the data correctly as below  hive> select * from xml_table;   OK  
1       Satish Kumar    Technical Lead  
2 Ramya   Testing  3)   hive> describe xml_table;   OK   _c0                     int  
_c1                     string  
_c2                     string  issue : ..  When I try to access only _c0 column , I am getting error as below  hive> select _c0,_c1 from xml_table;   FAILED: ParseException line 1:10 missing \' at ',' near '<EOF>'
line   1:15 missing \' at 'from' near '<EOF>' 
						
					
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		05-06-2016
	
		
		11:48 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 Its now running using below , thanks for all your help :  hive> ALTER TABLE jsont1 SET LOCATION "hdfs:/jsam/j1";   OK
Time taken: 0.245 seconds  hdfs:/   : Did you know then why its not running using hdfs://    (double slash) 
						
					
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		05-06-2016
	
		
		11:32 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 @Rajkumar Singh  hive> describe formatted jsont1;
OK
col_name        data_type       comment
# col_name              data_type               comment
json                    string
# Detailed Table Information
Database:               logs
Owner:                  hadoop
CreateTime:             Tue May 03 15:24:27 IST 2016
LastAccessTime:         UNKNOWN
Protect Mode:           None
Retention:              0
Location:               hdfs://mycluster:8020/jsam
Table Type:             EXTERNAL_TABLE
Table Parameters:
        COLUMN_STATS_ACCURATE   false
        EXTERNAL                TRUE
        numFiles                0
        numRows                 -1
        rawDataSize             -1
        totalSize               0
        transient_lastDdlTime   1462269267
# Storage Information
SerDe Library:          org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
InputFormat:            org.apache.hadoop.mapred.TextInputFormat
OutputFormat:           org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
Compressed:             No
Num Buckets:            -1
Bucket Columns:         []
Sort Columns:           []
Storage Desc Params:
        serialization.format    1 
						
					
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		05-06-2016
	
		
		09:58 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 @Rajkumar Singh   Yes I tried this also .. getting as below   FAILED: IllegalArgumentException java.net.UnknownHostException: jsam  Below text to show jsam is available in hdfs :  hive> dfs -ls /jsam;   Found 1 items
drwxr-xr-x   - hadoop supergroup          0 2016-05-06 12:49 /jsam/j1 
						
					
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		05-06-2016
	
		
		09:20 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
		1 Kudo
		
	
				
		
	
		
					
							 1) CREATE EXTERNAL TABLE IF NOT EXISTS jsont1(
json string
)
LOCATION '/jsam';  Now I need to change the location from where above json1  points to.  I tried this command - ALTER TABLE jsont1 SET LOCATION "/jsam/j2" ;  but getting error as below :   FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. {0}  is not absolute or has no scheme information.  Please specify a complete absolute uri with scheme information. /jsam/j2 
						
					
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