First tests does not work

[Vincent Barat]

Hi, I'm currently starting evaluating Sqoop, and I've trouble doing a simple import export. I use a local Hadoop cluster and LySQL server. This works fine: $ sqoop import --connect jdbc:mysql://localhost/customers --username analytics --password analytics --table application $ sqoop export --connect jdbc:mysql://localhost/customers --username analytics --password analytics --table application_copy --export-dir application But as soon as I try to specify delimiters or use sequence files, I got the following error during export: ... java.lang.RuntimeException: java.io.IOException: WritableName can't load class: application     at org.apache.hadoop.io.SequenceFile$Reader.getValueClass(SequenceFile.java:1673)     at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1613)     at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1486)     at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1475)     at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1470)     at org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader.initialize(SequenceFileRecordReader.java:50)     at org.apache.sqoop.mapreduce.CombineShimRecordReader.initialize(CombineShimRecordReader.java:76)     at org.apache.sqoop.mapreduce.CombineFileRecordReader.initialize(CombineFileRecordReader.java:62)     at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522)     at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)     at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)     at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212) Caused by: java.io.IOException: WritableName can't load class: application     at org.apache.hadoop.io.WritableName.getClass(WritableName.java:73)     at org.apache.hadoop.io.SequenceFile$Reader.getValueClass(SequenceFile.java:1671)     ... 11 more Caused by: java.lang.ClassNotFoundException: application     at java.net.URLClassLoader$1.run(URLClassLoader.java:202)     at java.security.AccessController.doPrivileged(Native Method)     at java.net.URLClassLoader.findClass(URLClassLoader.java:190)     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)     at java.lang.Class.forName0(Native Method)     at java.lang.Class.forName(Class.java:247)     at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:819)     at org.apache.hadoop.io.WritableName.getClass(WritableName.java:71)     ... 12 more I guess that Hadoop tasks cannot find the .class generated, but I cannot figure out how to configure them to find the .class Thanks for your help! -- Vincent Barat CTO Contact info vba...@capptain.com www.capptain.com Cell: +33 6 15 41 15 18 Rennes Office Office: +33 2 99 65 69 13 10 rue Jean-Marie Duhamel 35000 Rennes France Paris Office Office: +33 1 84 06 13 85 Fax: +33 9 57 72 20 18 18 rue Tronchet 75008 Paris France IMPORTANT NOTICE – UBIKOD and CAPPTAIN are registered trademarks of UBIKOD S.A.R.L., all copyrights are reserved. The contents of this email and attachments are confidential and may be subject to legal privilege and/or protected by copyright. Copying or communicating any part of it to others is prohibited and may be unlawful. If you are not the intended recipient you must not use, copy, distribute or rely on this email and should please return it immediately or notify us by telephone. At present the integrity of email across the Internet cannot be guaranteed. Therefore UBIKOD S.A.R.L. will not accept liability for any claims arising as a result of the use of this medium for transmissions by or to UBIKOD S.A.R.L.. UBIKOD S.A.R.L. may exercise any of its rights under relevant law, to monitor the content of all electronic communications. You should therefore be aware that this communication and any responses might have been monitored, and may be accessed by UBIKOD S.A.R.L. The views expressed in this document are that of the individual and may not necessarily constitute or imply its endorsement or recommendation by UBIKOD S.A.R.L. The content of this electronic mail may be subject to the confidentiality terms of a "Non-Disclosure Agreement" (NDA).