| |
| //// |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| //// |
| |
| The +export+ tool exports a set of files from HDFS back to an RDBMS. |
| The target table must already exist in the database. The input files |
| are read and parsed into a set of records according to the |
| user-specified delimiters. |
| |
| The default operation is to transform these into a set of +INSERT+ |
| statements that inject the records into the database. In "update mode," |
| Sqoop will generate +UPDATE+ statements that replace existing records |
| in the database, and in "call mode" Sqoop will make a stored procedure |
| call for each record. |
