hive 建表异常处理字节太长

hive create table: Specified key was too long; max key length is 767 bytes  

2013-12-26 14:37:04|  分类： Linux|举报|字号 订阅

 

 

把hive 的 metadata配置成mysql,在mysql数据库里创建了hive db后,修改hive的conf目录下的hive-site.xml为:

<?xml version="1.0"?>

<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

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<configuration>

 

<!-- WARNING!!! This file is provided for documentation purposes ONLY!     -->

<!-- WARNING!!! Any changes you make to this file will be ignored by Hive. -->

<!-- WARNING!!! You must make your changes in hive-site.xml instead.       -->

 

 

<!-- Hive Execution Parameters -->

 

<property>

  <name>javax.jdo.option.ConnectionURL</name>

  <value>jdbc:mysql://127.0.0.1:3306/hive?createDatabaseIfNotExist=true</value>

  <description>JDBC connect string for a JDBC metastore</description>

</property>

 

<property>

  <name>javax.jdo.option.ConnectionDriverName</name>

  <value>com.mysql.jdbc.Driver</value>

  <description>Driver class name for a JDBC metastore</description>

</property>

 

<property>

  <name>javax.jdo.option.ConnectionUserName</name>

  <value>root</value>

  <description>username to use against metastore database</description>

</property>

 

<property>

  <name>javax.jdo.option.ConnectionPassword</name>

  <value>root</value>

  <description>password to use against metastore database</description>

</property>

 

</configuration>

 

并且把mysql-connector-java-5.1.18-bin.jar拷到hive的lib目录下面.

 

结果运行hive, create table:

hive> 

    > create table user_info(userid int, user_name string);

FAILED: Error in metadata: MetaException(message:javax.jdo.JDODataStoreException: An exception was thrown while adding/validating class(es) : Specified key was too long; max key length is 767 bytes

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 767 bytes

...

 

查看hive 的log:

vi /tmp/root/hive.log

  12 2014-02-13 16:48:59,910 INFO  ql.Driver (PerfLogger.java:PerfLogEnd(115)) - </PERFLOG method=TimeToSubmit start=1392281339891 end=1392281339910 duration=19>

  13 2014-02-13 16:48:59,968 ERROR DataNucleus.Datastore (Log4JLogger.java:error(115)) - Error thrown executing CREATE TABLE `SD_PARAMS`

  14 (

  15     `SD_ID` BIGINT NOT NULL,

  16     `PARAM_KEY` VARCHAR(256) BINARY NOT NULL,

  17     `PARAM_VALUE` VARCHAR(4000) BINARY NULL,

  18     CONSTRAINT `SD_PARAMS_PK` PRIMARY KEY (`SD_ID`,`PARAM_KEY`)

  19 ) ENGINE=INNODB : Specified key was too long; max key length is 767 bytes

  20 com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Specified key was too long; max key length is 767 bytes

 

搜了下,在mysql上执行:

在mysql机器的上运行:

alter database hive character set latin1;

问题解决.

hive> 

    > 

    > create table user_info(userid int, user_name string);

OK

Time taken: 0.593 seconds

hive> show tables;

OK

user_info

Time taken: 0.451 seconds

hive>             

    > load data local inpath "/u/opt/hive-0.10.0-cdh4.5.0/examples/files/kv1.txt" overwrite into table user_info;

Copying data from file:/u/opt/hive-0.10.0-cdh4.5.0/examples/files/kv1.txt

Copying file: file:/u/opt/hive-0.10.0-cdh4.5.0/examples/files/kv1.txt

Loading data to table default.user_info

Table default.user_info stats: [num_partitions: 0, num_files: 1, num_rows: 0, total_size: 5812, raw_data_size: 0]

OK

Time taken: 0.691 seconds

hive> 

    > select * from user_info limit 10;

OK

238     val_238

86      val_86

311     val_311

27      val_27

165     val_165

409     val_409

255     val_255

278     val_278

98      val_98

484     val_484

Time taken: 0.262 seconds

hive>