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From Mark Grover <mgro...@oanda.com>
Subject Re: How to execute query with timestamp type (Hbase/Hive integeration)
Date Thu, 31 May 2012 03:14:19 GMT
Hi Peyton,
It seems like something to do with timestamp mapping.
What happens if you change your Hive table definition to have the event_time as int or string?

Mark

----- Original Message -----
From: "Peyton Peng" <pengpeng@yunyou.tv>
To: user@hive.apache.org
Sent: Wednesday, May 30, 2012 5:54:20 AM
Subject: Re: How to execute query with timestamp type (Hbase/Hive integeration)




Actually I can execute the first sql and it works well, all the libs you specified is under
the hive lib folder, 

I doubt if the issue is caused by the timestamp mapping between hbase with hive.. 

Regards, 
Peyton 





From: shashwat shriparv 
Sent: Wednesday, May 30, 2012 5:26 PM 
To: user@hive.apache.org 
Subject: Re: How to execute query with timestamp type (Hbase/Hive integeration) 

Add these file to hive lib folder 

>>> hadoop-0.20-core.jar
>>> hive/lib/hive-exec-0.7.1.jar
>>> hive/lib/hive-jdbc-0.7.1.jar
>>> hive/lib/hive-metastore-0.7.1.jar
>>> hive/lib/hive-service-0.7.1.jar
>>> hive/lib/libfb303.jar
>>> lib/commons-logging-1.0.4.jar
>>> slf4j-api-1.6.1.jar
>>> slf4j-log4j12-1.6.1.jar 

and then try 

On Wed, May 30, 2012 at 2:23 PM, Peyton Peng < pengpeng@yunyou.tv > wrote: 






Hi, 

I build the hive table mapped with hbase table, 

CREATE TABLE http_access(key string, client_ip string, client_port int, request_method string,
event_time timestamp) 
STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler' 
WITH SERDEPROPERTIES ( 
"hbase.columns.mapping" = ":key,client:ip,client:port,request:method,request:event_time" 
); 

The data is store with hbase client. 

I get an issue while query with hive for (hbase/hive integration), while I execute sql: select
ip, port, request_method from http_access , it works well with no problem, 

but while I execute below sql: select ip, port, event_time from http_access, I got below exception.


The only difference between two sqls is: the event_time is timestamp type, I can scan the
corresponding hbase table and see the value of event_time is: 
1338365792142 column=request:event_time, timestamp=1338365739818, value=Wed May 30 16:15:06
CST 2012 

Anyone who know what the issue is? (Not sure if I made a wrong mapping or should I just store
the timestamp value as long in hbase? currently I store the value as java.util.Date) 

Thank you very much.... 

Regards, 
Peyton 

Exception tracking: 

Total MapReduce jobs = 1 
Launching Job 1 out of 1 
Number of reduce tasks is set to 0 since there's no reduce operator 
****hdfs://Server:9000/user/hive/warehouse/http_access 
Starting Job = job_201205291421_0008, Tracking URL = http://Server:50030/jobdetails.jsp?jobid=job_201205291421_0008

Kill Command = /<here is the hadoop_home>/libexec/../bin/hadoop job -Dmapred.job.tracker=Server:9001
–kill job_201205291421_0008 
Hadoop job information for Stage-1: number of mappers: 1; number of reducers: 0 
2012-05-30 16:28:01,572 Stage-1 map = 0%, reduce = 0% 
2012-05-30 16:28:34,707 Stage-1 map = 100%, reduce = 100% 
Ended Job = job_201205291421_0008 with errors 
Error during job, obtaining debugging information... 
Examining task ID: task_201205291421_0008_m_000002 (and more) from job job_201205291421_0008

Exception in thread "Thread-211" java.lang.RuntimeException: Error while reading from task
log url 
at org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getErrors(TaskLogProcessor.java:130)

at org.apache.hadoop.hive.ql.exec.JobDebugger.showJobFailDebugInfo(JobDebuggerjava:211) 
at org.apache.hadoop.hive.ql.exec.JobDebugger.run(JobDebugger.java:81) 
at java.lang.Thread.run(Thread.java:619) 
Caused by: java.io.IOException: Server returned HTTP response code: 400 for URL: http://Server:50060/tasklog?taskid=attempt_201205291421_0008_m_000000_1&start=-8193

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1305)

at java.net.URL.openStream(URL.java:1009) 
at org.apache.hadoop.hive.ql.exec.errors.TaskLogProcessor.getErrors(TaskLogProcessor.java:120)

... 3 more 
FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask 
MapReduce Jobs Launched: 
Job 0: Map: 1 HDFS Read: 0 HDFS Write: 0 FAIL 
Total MapReduce CPU Time Spent: 0 msec 





-- 


∞ Shashwat Shriparv 


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