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https://issues.apache.org/jira/browse/HDFS-8337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14579953#comment-14579953
]
Yongjun Zhang commented on HDFS-8337:
-------------------------------------
Many thanks [~tucu00]!
Good to know this workaround, and hope we can commit the patch soon!
> httpfs doesn't work with creates from a jar with kerberos
> ---------------------------------------------------------
>
> Key: HDFS-8337
> URL: https://issues.apache.org/jira/browse/HDFS-8337
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: HDFS, hdfs-client, security, webhdfs
> Reporter: Yongjun Zhang
> Assignee: Yongjun Zhang
> Attachments: HDFS-8337.001.patch, HDFS-8337.002.patch,
> HDFS-8337.003.patch
>
>
> In a secure cluster, running a simple program:
> {code}
> import org.apache.hadoop.conf.*;
> import org.apache.hadoop.fs.*;
> import org.apache.hadoop.security.*;
> class Foo {
> public static void main(String args[]) throws Exception {
> FileSystem fs = FileSystem.get(new
> java.net.URI("webhdfs://<host>:14000/"), new Configuration());
> System.out.println(fs.listStatus(new Path("/"))[0]);
> java.io.OutputStream os = fs.create(new Path("/tmp/foo"));
> os.write('a');
> os.close();
> }
> }
> {code}
> Basically to access httpfs via webhdfs, the following exception is thrown:
> {code}
> [systest@yj52s ~]$ /usr/java/jdk1.7.0_67-cloudera/bin/java -cp $(hadoop
> classpath):. Foo
> 15/05/06 23:51:38 WARN ssl.FileBasedKeyStoresFactory: The property
> 'ssl.client.truststore.location' has not been set, no TrustStore will be
> loaded
> Exception in thread "main"
> org.apache.hadoop.ipc.RemoteException(com.sun.jersey.api.ParamException$QueryParamException):
> java.lang.IllegalArgumentException: No enum constant
> org.apache.hadoop.fs.http.client.HttpFSFileSystem.Operation.GETDELEGATIONTOKEN
> at
> org.apache.hadoop.hdfs.web.JsonUtil.toRemoteException(JsonUtil.java:163)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:354)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$200(WebHdfsFileSystem.java:91)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:608)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:458)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner$1.run(WebHdfsFileSystem.java:487)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.run(WebHdfsFileSystem.java:483)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getDelegationToken(WebHdfsFileSystem.java:1299)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getDelegationToken(WebHdfsFileSystem.java:237)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getAuthParameters(WebHdfsFileSystem.java:423)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.toUrl(WebHdfsFileSystem.java:444)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractFsPathRunner.getUrl(WebHdfsFileSystem.java:691)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:603)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:458)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner$1.run(WebHdfsFileSystem.java:487)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.run(WebHdfsFileSystem.java:483)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.listStatus(WebHdfsFileSystem.java:1277)
> at Foo.main(Foo.java:7)
> {code}
> Thanks [~qwertymaniac] and [~caseyjbrotherton] for reporting the issue.
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