Saya memiliki tabel "pelanggan" mysql dan mencoba mengimpor data dari lokasi mysql ke hdfs menggunakan sqoop import. Di bawah ini adalah versi yang saya instal di mesin saya: versi sqoop: 1.4.6 versi hive: 2.3.0 Versi Hadoop: 2.8.1
Perintah impor Sqoop:
sqoop import --connect jdbc:mysql://localhost/localdb --username root --password mnbv@1234 --table customers -m 1 --target-dir /user/hduser/sqoop_import/customers1/
dan ditampilkan di bawah ClassNotFountException:
Tue Oct 31 09:57:21 IST 2017 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.17/10/31 09:57:21 INFO db.DBInputFormat: Using read commited transaction isolation 17/10/31 09:57:21 INFO mapred.MapTask: Processing split: 1=1 AND 1=1
17/10/31 09:57:21 INFO mapred.LocalJobRunner: map task executor complete.
17/10/31 09:57:22 WARN mapred.LocalJobRunner: job_local1437452057_0001java.lang.Exception: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class customers not found
at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:489
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:549)
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class customers not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2216)
at org.apache.sqoop.mapreduce.db.DBConfiguration.getInputClass(DBConfiguration.java:403)
at org.apache.sqoop.mapreduce.db.DataDrivenDBInputFormat.createDBRecordReader(DataDrivenDBInputFormat.java:237)
at org.apache.sqoop.mapreduce.db.DBInputFormat.createRecordReader(DBInputFormat.java:263) at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.<init>(MapTask.java:515)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:758) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:270) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: Class customers not found at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2122)
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2214)
... 12 more
17/10/31 09:57:22 INFO mapreduce.Job: Job job_local1437452057_0001 running in uber mode : false 17/10/31 09:57:22 INFO mapreduce.Job: map 0% reduce 0%
17/10/31 09:57:22 INFO mapreduce.Job: Job job_local1437452057_0001 failed with state FAILED due to: NA 17/10/31 09:57:22 INFO mapreduce.Job: Counters: 0
17/10/31 09:57:22 WARN mapreduce.Counters: Group FileSystemCounters is deprecated. Use org.apache.hadoop.mapreduce.FileSystemCounter instead 17/10/31 09:57:22 INFO mapreduce.ImportJobBase: Transferred 0 bytes in 4.105 seconds (0 bytes/sec)
17/10/31 09:57:22 WARN mapreduce.Counters: Group org.apache.hadoop.mapred.Task$Counter is deprecated. Use org.apache.hadoop.mapreduce.TaskCounter instead 17/10/31 09:57:22 INFO mapreduce.ImportJobBase: Retrieved 0 records.
17/10/31 09:57:22 ERROR tool.ImportTool: Error during import: Import job failed!
Tetapi ketika saya mencoba membuat daftar tabel menggunakan perintah sqoop, itu berfungsi dengan baik dan menampilkan tabel pelanggan. Perintah sendok:
sqoop list-tables --connect jdbc:mysql://localhost/localdb --username root --password mnbv@1234;
Output ditampilkan dengan benar seperti yang ditunjukkan:
17/10/31 10:07:09 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset.
Tue Oct 31 10:07:09 IST 2017 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. customers
apa masalahnya, mengapa sqoop import from table tidak mengenali tabel dari mysql. Mohon bantu saya dalam hal yang sama.
Terima kasih sebelumnya.
