Was that code above *verbatim? * because there is a typo Hive> Load *s*ata local inpath ‘path/to/abcd.txt’ into table abcd;
(load sata not load data) 2011/11/21 Aditya Singh30 <aditya_sing...@infosys.com> > Hi Everybody,**** > > I am using Apache’s Hadoop-0.20.2 and > Apache’s Hive-0.7.0. I have a 2 node cluster. One Redhat Linux 6.0(Hadoop > Server) and other Windows 7 using Cygwin. The Hadoop cluster is working > fine. I have checked by executing various examples provided with Hadoop. > Map reduce jobs are being executed fine. For Hive I am using MySQL for > metastore with following configuration is hive-site.xml :**** > > ** ** > > <property> **** > > <name>javax.jdo.option.ConnectionURL</name> **** > > <value>jdbc:mysql://localhost:3306/metastore?createDatabaseIfNotExist=true</value> > **** > > </property> **** > > ** ** > > <property> **** > > <name>javax.jdo.option.ConnectionDriverName</name> **** > > <value>com.mysql.jdbc.Driver</value> **** > > </property> **** > > ** ** > > <property> **** > > <name>javax.jdo.option.ConnectionUserName</name> **** > > <value>hiveuser</value> **** > > </property> **** > > ** ** > > <property> **** > > <name>javax.jdo.option.ConnectionPassword</name> **** > > <value>hiveuser</value> **** > > </property> **** > > ** ** > > <property> **** > > <name>datanucleus.autoCreateSchema</name> **** > > <value>false</value> **** > > </property> **** > > **** > > <property> **** > > <name>datanucleus.fixedDatastore</name> **** > > <value>true</value> **** > > </property>**** > > ** ** > > ** ** > > I created the DB and hiveuser in mysql using following commands:**** > > mysql> CREATE DATABASE metastore; **** > > mysql> USE metastore; **** > > mysql> SOURCE > /usr/local/hive/scripts/metastore/upgrade/mysql/hive-schema-0.7.0.mysql.sql; > **** > > ** ** > > mysql> CREATE USER 'hiveuser'@'%' IDENTIFIED BY 'hiveuser'; **** > > mysql> GRANT ALL ON metastore.* TO 'hiveuser'@'%'; **** > > ** ** > > I created a table using the following command on hive:**** > > hive> Create table abcd(ab int, cd string) row format delimited fields > terminated by ‘#’ stored as textfile;**** > > ** ** > > Then I created a file abcddata.txt containing the following data**** > > 11#aa**** > > 22#bb**** > > 33#cc**** > > ** ** > > Then I loaded this data into table abcd using :**** > > Hive> Load sata local inpath ‘path/to/abcd.txt’ into table abcd;**** > > ** ** > > Now when I execute “select * from abcd” it runs successfully and shows > the data in abcd. **** > > But if I run “select ab from abcd” or “ select * from abcd where cd=’aa’” > it returns error: **** > > ** ** > > FAILED: Execution Error, return code 2 from > org.apache.hadoop.hive.ql.exec.MapRedTask**** > > ** ** > > In the logs I found:**** > > Caused by: java.util.NoSuchElementException**** > > at java.util.Vector.lastElement(Vector.java:456)**** > > at com.sun.beans.ObjectHandler.lastExp(ObjectHandler.java:134)**** > > at > com.sun.beans.ObjectHandler.dequeueResult(ObjectHandler.java:138)**** > > at java.beans.XMLDecoder.readObject(XMLDecoder.java:201)**** > > at > org.apache.hadoop.hive.ql.exec.Utilities.deserializeMapRedWork(Utilities.java:462) > **** > > at > org.apache.hadoop.hive.ql.exec.Utilities.getMapRedWork(Utilities.java:184) > **** > > ** ** > > ** ** > > And when I tried to access Hive from a java program using connection > string:**** > > (jdbc:mysql://master:3306/metastore","hiveuser","hiveuser")**** > > Running command “describe abcd” it returns:**** > > Exception in thread "main" > com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table > 'metastore.abcd' doesn't exist**** > > ** ** > > Then on the mysql server I ran:**** > > mysql> use metastore;**** > > mysql> show tables;**** > > ** ** > > The table abcd is not there. The table is not being stored in the mysql > metastore db. **** > > So how come on Hive CLI, when I do “select * from abcd” it shows the data > in the table. And “show tables” shows abcd there. It means Hive CLI is not > using the mysql metastore for storing and “select *” statement but whenever > it’s a statement that requires map reduce jobs or while accessing via java > program using connection string it uses mysql metastore. It must be some > configuration mistake I think. Please help me out.**** > > ** ** > > ** ** > > ** ** > > Regards,**** > > Aditya Singh **** > > Infosys, India.**** > > ** ** > > **************** CAUTION - Disclaimer ***************** > This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely > for the use of the addressee(s). If you are not the intended recipient, please > notify the sender by e-mail and delete the original message. 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