我想将HDFS中的数据导出到架构my_schema
中的SQL Server表。
我像导入命令一样尝试--schema
:
sqoop export \
--libjars /opt/mapr/sqoop/sqoop-1.4.6/lib/sqljdbc4.jar \
--connect "jdbc:sqlserver://MY-SERVER-DNS;database=my_db;" \
--schema "myschema" \
--table "my_table" \
--export-dir /path/to/my/hdfs/dir
ERROR tool.BaseSqoopTool: Unrecognized argument: --schema
--table "schema.table"
sqoop export \
--libjars /opt/mapr/sqoop/sqoop-1.4.6/lib/sqljdbc4.jar \
--connect "jdbc:sqlserver://MY-SERVER-DNS;database=my_db;" \
--table "my_schema.my_table" \
--export-dir /path/to/my/hdfs/dir
INFO manager.SqlManager:
Executing SQL statement: SELECT t.* FROM [my_schema.my_table] AS t WHERE 1=0
ERROR manager.SqlManager: Error executing statement:
com.microsoft.sqlserver.jdbc.SQLServerException:
Invalid object name 'my_schema.my_table'.
有没有办法用sqoop做到这一点?还是另一种技术?
编辑:
sqoop export \
--libjars /opt/mapr/sqoop/sqoop-1.4.6/lib/sqljdbc4.jar \
--connect "jdbc:sqlserver://MY-SERVER-DNS;database=my_db;schema=my_schema;" \
--table "my_table" \
--export-dir /path/to/my/hdfs/dir
INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM [my_table] AS t WHERE 1=0
16/07/25 10:46:21 ERROR manager.SqlManager:
Error executing statement: com.microsoft.sqlserver.jdbc.SQLServerException:
Invalid object name 'my_table'.
这不承认架构。
答案 0 :(得分:7)
在连接字符串中提供架构:
jdbc:sqlserver://MY-SERVER-DNS;databaseName=my_db;schema=my_schema;
所以你的导出sqoop
命令应该是:
sqoop export \
--libjars /opt/mapr/sqoop/sqoop-1.4.6/lib/sqljdbc4.jar \
--connect "jdbc:sqlserver://MY-SERVER-DNS;databaseName=my_db;schema=my_schema;" \
--table "my_table" \
--export-dir /path/to/my/hdfs/dir
<强> ALSO: 强>
Custom schemas are supported for both import and export job - 根据sqoop指南中的语法,--schema
应作为-- --schema
传递:
所以你的导出sqoop
命令应该是:
sqoop export \
--libjars /opt/mapr/sqoop/sqoop-1.4.6/lib/sqljdbc4.jar \
--connect "jdbc:sqlserver://MY-SERVER-DNS;databaseName=my_db;" \
--export-dir /path/to/my/hdfs/dir
--table "my_table" \
-- --schema my_schema \