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From "Elek, Marton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDDS-1333) OzoneFileSystem can't work with spark/hadoop2.7 because incompatible security classes
Date Mon, 25 Mar 2019 16:08:00 GMT

    [ https://issues.apache.org/jira/browse/HDDS-1333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16800842#comment-16800842
] 

Elek, Marton commented on HDDS-1333:
------------------------------------

Yes, we should discuss again the effort to support older hadoop2 branches.

I have an idea to create a workaround: I created a simplified version of the OzoneFileSystem:

{code}
public class OzoneFileSystemSimplified extends FileSystem {
   //all the existing implementation except the file token magic
}
{code}

And the real file system is just an extension:

{code}
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class OzoneFileSystem extends OzoneFileSystemSimplified
    implements KeyProviderTokenIssuer {

  @Override
  public KeyProvider getKeyProvider() throws IOException {
    return getAdapter().getKeyProvider();
  }

  @Override
  public URI getKeyProviderUri() throws IOException {
    return getAdapter().getKeyProviderUri();
  }

  @Override
  public DelegationTokenIssuer[] getAdditionalTokenIssuers()
      throws IOException {
    KeyProvider keyProvider = getKeyProvider();
    if (keyProvider instanceof DelegationTokenIssuer) {
      return new DelegationTokenIssuer[]{(DelegationTokenIssuer)keyProvider};
    }
    return null;
  }

}
{code}

As of now I am testing this change, but I have some other problem (`java.lang.NoClassDefFoundError:
org/apache/hadoop/fs/StorageStatistics`) which should be solved to test everything all together.


Still working on this.



> OzoneFileSystem can't work with spark/hadoop2.7 because incompatible security classes
> -------------------------------------------------------------------------------------
>
>                 Key: HDDS-1333
>                 URL: https://issues.apache.org/jira/browse/HDDS-1333
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>            Reporter: Elek, Marton
>            Priority: Major
>
> The current ozonefs compatibility layer is broken by: HDDS-1299.
> The spark jobs (including hadoop 2.7) can't be executed any more:
> {code}
> 2019-03-25 09:50:08 INFO  StateStoreCoordinatorRef:54 - Registered StateStoreCoordinator
endpoint
> Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/crypto/key/KeyProviderTokenIssuer
>         at java.lang.ClassLoader.defineClass1(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
>         at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
>         at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
>         at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>         at java.lang.Class.forName0(Native Method)
>         at java.lang.Class.forName(Class.java:348)
>         at org.apache.hadoop.conf.Configuration.getClassByNameOrNull(Configuration.java:2134)
>         at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2099)
>         at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193)
>         at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2654)
>         at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2667)
>         at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:94)
>         at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2703)
>         at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2685)
>         at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:373)
>         at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295)
>         at org.apache.spark.sql.execution.streaming.FileStreamSink$.hasMetadata(FileStreamSink.scala:45)
>         at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:332)
>         at org.apache.spark.sql.DataFrameReader.loadV1Source(DataFrameReader.scala:223)
>         at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:211)
>         at org.apache.spark.sql.DataFrameReader.text(DataFrameReader.scala:715)
>         at org.apache.spark.sql.DataFrameReader.textFile(DataFrameReader.scala:757)
>         at org.apache.spark.sql.DataFrameReader.textFile(DataFrameReader.scala:724)
>         at org.apache.spark.examples.JavaWordCount.main(JavaWordCount.java:45)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:498)
>         at org.apache.spark.deploy.JavaMainApplication.start(SparkApplication.scala:52)
>         at org.apache.spark.deploy.SparkSubmit.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:849)
>         at org.apache.spark.deploy.SparkSubmit.doRunMain$1(SparkSubmit.scala:167)
>         at org.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:195)
>         at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:86)
>         at org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:924)
>         at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:933)
>         at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
> Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.crypto.key.KeyProviderTokenIssuer
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>         ... 43 more
> {code}



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