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POHow can I execute Sqoop in Java?
 

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  1. POHow can I execute Sqoop in Java?
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    <p>I created a new Java project, then I added Library Sqoop and Hadoop. (The Libraries are "hadoop-core-1.1.1.jar, sqoop-1.4.2.jar, etc.... ".)</p> <p>Then I tried below code:</p> <pre><code>public class MySqoopDriver { public static void main(String[] args) { String[] str = { "export", "--connect", "jdbc:mysql://localhost/mytestdb", "--hadoop-home", "/home/yoonhok/development/hadoop-1.1.1", "--table", "tbl_1", "--export-dir", "hdfs://localhost:9000/user/hive/warehouse/tbl_1", "--username", "yoonhok", "--password", "1234"}; Sqoop.runTool(str); } } </code></pre> <p>The parameters are right, since when I try in terminal, it works well.</p> <p>But it didn't work. The error message is:</p> <pre><code>13/02/17 16:23:07 WARN tool.BaseSqoopTool: Setting your password on the command-line is insecure. Consider using -P instead. 13/02/17 16:23:07 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset. 13/02/17 16:23:07 INFO tool.CodeGenTool: Beginning code generation 13/02/17 16:23:07 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tbl_1` AS t LIMIT 1 13/02/17 16:23:07 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tbl_1` AS t LIMIT 1 13/02/17 16:23:07 INFO orm.CompilationManager: HADOOP_HOME is /home/yoonhok/development/hadoop-1.1.1 Note: /tmp/sqoop-yoonhok/compile/86a3cab62184ad50a3ae11e7cb0e4f4d/tbl_1.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details. 13/02/17 16:23:08 INFO orm.CompilationManager: Writing jar file: /tmp/sqoop-yoonhok/compile/86a3cab62184ad50a3ae11e7cb0e4f4d/tbl_1.jar 13/02/17 16:23:08 INFO mapreduce.ExportJobBase: Beginning export of tbl_1 13/02/17 16:23:09 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 13/02/17 16:23:09 INFO input.FileInputFormat: Total input paths to process : 1 13/02/17 16:23:09 INFO input.FileInputFormat: Total input paths to process : 1 13/02/17 16:23:09 INFO mapred.JobClient: Cleaning up the staging area file:/tmp/hadoop-yoonhok/mapred/staging/yoonhok1526809600/.staging/job_local_0001 13/02/17 16:23:09 ERROR security.UserGroupInformation: PriviledgedActionException as:yoonhok cause:java.io.FileNotFoundException: File /user/hive/warehouse/tbl_1/000000_0 does not exist. 13/02/17 16:23:09 ERROR tool.ExportTool: Encountered IOException running export job: java.io.FileNotFoundException: File /user/hive/warehouse/tbl_1/000000_0 does not exist. </code></pre> <p>When I check the HDFS, the file exists:</p> <pre><code>hadoop fs -ls /user/hive/warehouse/tbl_1 Found 1 items -rw-r--r-- 1 yoonhok supergroup 240 2013-02-16 18:56 /user/hive/warehouse/tbl_1/000000_0 </code></pre> <p>How can I execute Sqoop in my Java program?</p> <p>I tried Processbuilder and Process, but I don't want to use them.</p> <p>I really want to use the Sqoop API, but I heard that it doesn't exist yet.</p> <p>I read <a href="https://stackoverflow.com/questions/9229611/how-to-use-sqoop-in-java-program">this question</a> but it doesn't work for me.</p>
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