hive集成hbase笔记

系统环境：

Hbase：0.90.3

hive：0.7.0

hive 0.7.0自带的lib下包含文件“hbase-0.89.0-SNAPSHOT.jar”，我的hbase版本是0.90.3，首先拷贝hbase-0.90.3.jar到hive/lib下，然后删除“hbase-0.89.0-SNAPSHOT.jar”。

创建hive表、hbase表：

1. CREATE TABLE hbase_table_1(key int, value string)
2. STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
3. WITH SERDEPROPERTIES ("hbase.columns.mapping" = ":key,cf1:val")
4. TBLPROPERTIES ("​​hbase.table.name​​" = "xyz");

 其中属性hbase.table.name值"xyz"为hbase的表名，属性hbase.columns.mapping，"cf1:val"为列族名称。

在hive 客户端执行上面语句后，会在hive中生成表"hbase_table_1"，在hbase中生成表"xyz"

 

导入测试数据：

1. hive> CREATE TABLE pokes (foo INT, bar STRING);
2. hive> LOAD DATA LOCAL INPATH './examples/files/kv1.txt' OVERWRITE INTO TABLE pokes;
3. hive> INSERT OVERWRITE TABLE hbase_table_1 SELECT * FROM pokes;
4. hive> select * from hbase_table_1;

 

troubleshooting：

1. FAILED: Error in metadata: MetaException(message:org.apache.hadoop.hbase.MasterNotRunningException: CNC-JN-R-541:60000
2. at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getMaster(HConnectionManager.java:394)
3. at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:83)
4. at org.apache.hadoop.hive.hbase.HBaseStorageHandler.getHBaseAdmin(HBaseStorageHandler.java:74)
5. at org.apache.hadoop.hive.hbase.HBaseStorageHandler.preCreateTable(HBaseStorageHandler.java:158)
6. at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.createTable(HiveMetaStoreClient.java:344)
7. at org.apache.hadoop.hive.ql.metadata.Hive.createTable(Hive.java:470)
8. at org.apache.hadoop.hive.ql.exec.DDLTask.createTable(DDLTask.java:3146)
9. at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:213)
10. at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:130)
11. at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57)
12. at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1063)
13. at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:900)
14. at org.apache.hadoop.hive.ql.Driver.run(Driver.java:748)
15. at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:164)
16. at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:241)
17. at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:456)
18. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
19. at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
20. at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
21. at java.lang.reflect.Method.invoke(Method.java:597)
22. at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
23. )

 

出现这个错误的原因是我引入的hbase包和hive自带的hive包冲突，删除hive/lib下的 hbase-0.89.0-SNAPSHOT.jar， OK了。

 

 

FAILED: Error in metadata: MetaException(message:Column Family department is not defined in hbase table hello)

 

当使用hive相关管理已经存在的hbase 多列table时，出现上面错误，而且列族“department ”的确存在，最终发现原因是：在hive中使用CREATE EXTERNAL TABLE 创建表的时候，"hbase.columns.mapping"的值中不能包含空格