问题
I am developing a java program.
The java program exports data from hive to mysql.
First, I write the code
ProcessBuilder pb = new ProcessBuilder("sqoop-export", "export",
"--connect", "jdbc:mysql://localhost/mydb",
"--hadoop-home", "/home/yoonhok/development/hadoop-1.1.1",
"--table", "mytable",
"--export-dir", "/user/hive/warehouse/tbl_2",
"--username", "yoonhok",
"--password", "1234");
try {
Process p = pb.start();
if (p.waitFor() != 0) {
System.out.println("Error: sqoop-export failed.");
return false;
}
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
It works perfectly.
But I learned a new way of using sqoop in java.
Sqoop doesn't support client api yet.
So I added sqoop lib and just write Sqoop.run()
Second, I write the code again with new way.
String[] str = {"export",
"--connect", "jdbc:mysql://localhost/mydb",
"--hadoop-home", "/home/yoonhok/development/hadoop-1.1.1",
"--table", "mytable",
"--export-dir", "/user/hive/warehouse/tbl_2",
"--username", "yoonhok",
"--password", "1234"
};
if (Sqoop.runTool(str) == 1) {
System.out.println("Error: sqoop-export failed.");
return false;
}
But It doesn't running.
I got error......
13/02/14 16:17:09 WARN tool.BaseSqoopTool: Setting your password on the command-line is insecure. Consider using -P instead.
13/02/14 17:43:12 WARN sqoop.ConnFactory: $SQOOP_CONF_DIR has not been set in the environment. Cannot check for additional configuration.
13/02/14 16:17:09 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset.
13/02/14 16:17:09 INFO tool.CodeGenTool: Beginning code generation
13/02/14 16:17:09 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tbl_2` AS t LIMIT 1
13/02/14 16:17:09 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tbl_2` AS t LIMIT 1
13/02/14 16:17:09 INFO orm.CompilationManager: HADOOP_HOME is /home/yoonhok/development/hadoop-1.1.1
Note: /tmp/sqoop-yoonhok/compile/45dd1a113123726796a4ed4ce10c9110/tbl_2.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
13/02/14 16:17:10 INFO orm.CompilationManager: Writing jar file: /tmp/sqoop-yoonhok/compile/45dd1a113123726796a4ed4ce10c9110/tbl_2.jar
13/02/14 16:17:10 INFO mapreduce.ExportJobBase: Beginning export of tbl_2
13/02/14 16:17:10 WARN mapreduce.ExportJobBase: Input path file:/user/hive/warehouse/tbl_2 does not exist
13/02/14 16:17:11 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
13/02/14 16:17:11 INFO mapred.JobClient: Cleaning up the staging area file:/tmp/hadoop-yoonhok/mapred/staging/yoonhok314601126/.staging/job_local_0001
13/02/14 16:17:11 ERROR security.UserGroupInformation: PriviledgedActionException as:yoonhok cause:org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: file:/user/hive/warehouse/tbl_2
13/02/14 16:17:11 ERROR tool.ExportTool: Encountered IOException running export job: org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: file:/user/hive/warehouse/tbl_2
I saw $SQOOP_CONF_DIR has not been set in the environment.
so I added
SQOOP_CONF_DIR=/home/yoonhok/development/sqoop-1.4.2.bin__hadoop-1.0.0/conf
in the
/etc/environment
And try again, but Error...
13/02/14 16:17:09 WARN tool.BaseSqoopTool: Setting your password on the command-line is insecure. Consider using -P instead.
13/02/14 16:17:09 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset.
13/02/14 16:17:09 INFO tool.CodeGenTool: Beginning code generation
13/02/14 16:17:09 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tbl_2` AS t LIMIT 1
13/02/14 16:17:09 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tbl_2` AS t LIMIT 1
13/02/14 16:17:09 INFO orm.CompilationManager: HADOOP_HOME is /home/yoonhok/development/hadoop-1.1.1
Note: /tmp/sqoop-yoonhok/compile/45dd1a113123726796a4ed4ce10c9110/tbl_2.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
13/02/14 16:17:10 INFO orm.CompilationManager: Writing jar file: /tmp/sqoop-yoonhok/compile/45dd1a113123726796a4ed4ce10c9110/tbl_2.jar
13/02/14 16:17:10 INFO mapreduce.ExportJobBase: Beginning export of tbl_2
13/02/14 16:17:10 WARN mapreduce.ExportJobBase: Input path file:/user/hive/warehouse/tbl_2 does not exist
13/02/14 16:17:11 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
13/02/14 16:17:11 INFO mapred.JobClient: Cleaning up the staging area file:/tmp/hadoop-yoonhok/mapred/staging/yoonhok314601126/.staging/job_local_0001
13/02/14 16:17:11 ERROR security.UserGroupInformation: PriviledgedActionException as:yoonhok cause:org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: file:/user/hive/warehouse/tbl_2
13/02/14 16:17:11 ERROR tool.ExportTool: Encountered IOException running export job: org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: file:/user/hive/warehouse/tbl_2
I think that Export-dir is problem.
I use "/user/hive/warehouse/tbl_2".
And When I run "hadoop fs -ls /user/hive/warehouse/", the table "tbl_2" exist.
I think that
"Input path does not exist: file:/user/hive/warehouse/tbl_2" is not ok.
"Input path does not exist: hdfs:/user/hive/warehouse/tbl_2" is ok.
But I don't know how can I fix it.
Ok just before I got a hint.
And I edited 'export-dir'
--export-dir hdfs://localhost:9000/user/hive/warehouse/tbl_2
But... It's error... T.T
13/02/15 15:17:20 WARN tool.BaseSqoopTool: Setting your password on the command-line is insecure. Consider using -P instead.
13/02/15 15:17:20 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset.
13/02/15 15:17:20 INFO tool.CodeGenTool: Beginning code generation
13/02/15 15:17:20 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tbl_2` AS t LIMIT 1
13/02/15 15:17:20 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM `tbl_2` AS t LIMIT 1
13/02/15 15:17:20 INFO orm.CompilationManager: HADOOP_HOME is /home/yoonhok/development/hadoop-1.1.1/libexec/..
Note: /tmp/sqoop-yoonhok/compile/697590ee9b90c022fb8518b8a6f1d86b/tbl_2.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
13/02/15 15:17:22 INFO orm.CompilationManager: Writing jar file: /tmp/sqoop-yoonhok/compile/697590ee9b90c022fb8518b8a6f1d86b/tbl_2.jar
13/02/15 15:17:22 INFO mapreduce.ExportJobBase: Beginning export of tbl_2
13/02/15 15:17:22 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
13/02/15 15:17:23 INFO input.FileInputFormat: Total input paths to process : 1
13/02/15 15:17:23 INFO input.FileInputFormat: Total input paths to process : 1
13/02/15 15:17:23 INFO mapred.JobClient: Cleaning up the staging area file:/tmp/hadoop-yoonhok/mapred/staging/yoonhok922915382/.staging/job_local_0001
13/02/15 15:17:23 ERROR security.UserGroupInformation: PriviledgedActionException as:yoonhok cause:java.io.FileNotFoundException: File /user/hive/warehouse/tbl_2/000000_0 does not exist.
13/02/15 15:17:23 ERROR tool.ExportTool: Encountered IOException running export job: java.io.FileNotFoundException: File /user/hive/warehouse/tbl_2/000000_0 does not exist.
When I checked hdfs,
hadoop fs -ls /user/hive/warehouse/tbl_2
or
hadoop fs -ls hdfs://localhost:9000/user/hive/warehouse/tbl_2
the file exist.
-rw-r--r-- 1 yoonhok supergroup 14029022 2013-02-15 12:16 /user/hive/warehouse/tbl_2/000000_0
I try in the shell command in terminal
sqoop-export --connect jdbc:mysql://localhost/detector --table tbl_2 --export-dir hdfs://localhost:9000/user/hive/warehouse/tbl_2 --username yoonhok --password 1234
It's work.
What's problem?
I don't know.
Could you help me?
回答1:
You need to load and provide your Hadoop configuration files. By default they are read from classpath, but you might be able to override this by Configuration.setDefaultResource (without guarantees).
来源：https://stackoverflow.com/questions/14870139/sqoop-export-error-causeorg-apache-hadoop-mapreduce-lib-input-invalidinputexc