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https://issues.apache.org/jira/browse/HDFS-534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741924#action_12741924
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Tom White commented on HDFS-534:
--------------------------------
HDFS doesn't depend on Avro directly, Common does, so really we should be using
Ivy's transitive dependency support (so that by depending on Common, Ivy will
pull in the jars that Common depends on, such as Avro, Jets3t, etc). This
requires HADOOP-5107, so the approach in this issue is fine in the meantime.
> Required avro classes are missing
> ---------------------------------
>
> Key: HDFS-534
> URL: https://issues.apache.org/jira/browse/HDFS-534
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.21.0
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.21.0
>
> Attachments: h534_20090810.patch, h534_20090810b.patch
>
>
> Some tests like TestDFSIO are failing:
> {noformat}
> java.lang.NoClassDefFoundError: org/apache/avro/io/DatumReader
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:247)
> at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:837)
> at
> org.apache.hadoop.io.serializer.SerializationFactory.add(SerializationFactory.java:66)
> at
> org.apache.hadoop.io.serializer.SerializationFactory.<init>(SerializationFactory.java:58)
> at org.apache.hadoop.io.SequenceFile$Writer.init(SequenceFile.java:916)
> at
> org.apache.hadoop.io.SequenceFile$Writer.<init>(SequenceFile.java:852)
> at org.apache.hadoop.io.SequenceFile.createWriter(SequenceFile.java:385)
> at org.apache.hadoop.io.SequenceFile.createWriter(SequenceFile.java:276)
> at org.apache.hadoop.fs.TestDFSIO.createControlFile(TestDFSIO.java:134)
> at org.apache.hadoop.fs.TestDFSIO.testIOs(TestDFSIO.java:114)
> at org.apache.hadoop.fs.TestDFSIO.testIOs(TestDFSIO.java:99)
> Caused by: java.lang.ClassNotFoundException: org.apache.avro.io.DatumReader
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> {noformat}
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