error while executing select query in hive

问题

I'm using hadoop 1.1.2 , hbase 0.94.8 and hive 0.14 . I'am trying to create a table in hbase using hive and load data in it later by insert overwrite .

for the moment I was able to create the table:

CREATE TABLE hbase_table_emp(id int, name string, role string) 
STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
WITH SERDEPROPERTIES ("hbase.columns.mapping" = ":key,cf1:name,cf1:role")
TBLPROPERTIES ("hbase.table.name" = "emp");

and load data into another table that I will overwrite it into the hbase table :

hive> create table testemp(id int, name string, role string) row format delimited fields terminated by '\t';
hive> load data local inpath '/home/user/sample.txt' into table testemp;

but when I try select * from testemp; to verify that the data was loaded successfully I get this error:

Exception in thread "main" java.lang.NoSuchMethodError: org.apache.hadoop.mapred.JobConf.unset(Ljava/lang/String;)V
    at org.apache.hadoop.hive.ql.io.HiveInputFormat.pushFilters(HiveInputFormat.java:432)
    at org.apache.hadoop.hive.ql.exec.FetchTask.initialize(FetchTask.java:76)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:443)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:303)
    at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1067)
    at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1129)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1004)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:994)
    at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:247)
    at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:199)
    at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:410)
    at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:783)
    at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:677)
    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:616)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:622)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:156)

could someone help me please ! thank you

回答1:

Unfortunately, I believe you will have to upgrade Hadoop to at least 1.2.0.

It appears that Hive is trying to access the unset method of the org.apache.hadoop.mapred.JobConf class. In looking at the API documentation for that class in Hadoop 1.1.2, you can see that method does not exist.

The first release from the 1.x series in which that method gets implemented is 1.2.0 (see the API documentation for the same class). Note that the method actually gets inherited from the org.apache.hadoop.conf.Configuration class.

来源：https://stackoverflow.com/questions/28070003/error-while-executing-select-query-in-hive

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Hadoop

Hive

hbase