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https://issues.apache.org/jira/browse/HDFS-6776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14108209#comment-14108209
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Haohui Mai commented on HDFS-6776:
----------------------------------
bq. Now with this config introduced, and since we dedicate NullToken exception
to be thrown when insecure cluster is asked for delegation token, there is not
much functionality difference between NullToken or dummy token.
WebHdfsFileSystem is the wrong place to have this configuration. If distcp
fails to work with other filesystems that have the same issue, are you
modifying all of them that get delegation tokens from insecure clusters and
throwing NullToken for every possible filesystem implementation?
Just to clarify, I'm not necessarily pushing the dummy token proposal. It is
just something that I've tried and worked. Can you please look at whether you
can fix distcp? To me this is the right place to fix, though it might be
nontrivial because yarn / mr require DTs as well.
> distcp from insecure cluster (source) to secure cluster (destination) doesn't
> work
> ----------------------------------------------------------------------------------
>
> Key: HDFS-6776
> URL: https://issues.apache.org/jira/browse/HDFS-6776
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.3.0, 2.5.0
> Reporter: Yongjun Zhang
> Assignee: Yongjun Zhang
> Attachments: HDFS-6776.001.patch, HDFS-6776.002.patch,
> HDFS-6776.003.patch, HDFS-6776.004.patch, HDFS-6776.004.patch,
> HDFS-6776.005.patch, HDFS-6776.006.NullToken.patch,
> HDFS-6776.006.NullToken.patch, HDFS-6776.007.patch, HDFS-6776.008.patch
>
>
> Issuing distcp command at the secure cluster side, trying to copy stuff from
> insecure cluster to secure cluster, and see the following problem:
> {code}
> hadoopuser@yjc5u-1 ~]$ hadoop distcp webhdfs://<insure-cluster>:<port>/tmp
> hdfs://<sure-cluster>:8020/tmp/tmptgt
> 14/07/30 20:06:19 INFO tools.DistCp: Input Options:
> DistCpOptions{atomicCommit=false, syncFolder=false, deleteMissing=false,
> ignoreFailures=false, maxMaps=20, sslConfigurationFile='null',
> copyStrategy='uniformsize', sourceFileListing=null,
> sourcePaths=[webhdfs://<insecure-cluster>:<port>/tmp],
> targetPath=hdfs://<secure-cluster>:8020/tmp/tmptgt, targetPathExists=true}
> 14/07/30 20:06:19 INFO client.RMProxy: Connecting to ResourceManager at
> <secure-clister>:8032
> 14/07/30 20:06:20 WARN ssl.FileBasedKeyStoresFactory: The property
> 'ssl.client.truststore.location' has not been set, no TrustStore will be
> loaded
> 14/07/30 20:06:20 WARN security.UserGroupInformation:
> PriviledgedActionException as:hadoopu...@xyz.com (auth:KERBEROS)
> cause:java.io.IOException: Failed to get the token for hadoopuser,
> user=hadoopuser
> 14/07/30 20:06:20 WARN security.UserGroupInformation:
> PriviledgedActionException as:hadoopu...@xyz.com (auth:KERBEROS)
> cause:java.io.IOException: Failed to get the token for hadoopuser,
> user=hadoopuser
> 14/07/30 20:06:20 ERROR tools.DistCp: Exception encountered
> java.io.IOException: Failed to get the token for hadoopuser, user=hadoopuser
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
> at
> org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
> at
> org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.toIOException(WebHdfsFileSystem.java:365)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$600(WebHdfsFileSystem.java:84)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.shouldRetry(WebHdfsFileSystem.java:618)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:584)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:438)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner$1.run(WebHdfsFileSystem.java:466)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1554)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.run(WebHdfsFileSystem.java:462)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getDelegationToken(WebHdfsFileSystem.java:1132)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getDelegationToken(WebHdfsFileSystem.java:218)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getAuthParameters(WebHdfsFileSystem.java:403)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.toUrl(WebHdfsFileSystem.java:424)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractFsPathRunner.getUrl(WebHdfsFileSystem.java:640)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:565)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:438)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner$1.run(WebHdfsFileSystem.java:466)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1554)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.run(WebHdfsFileSystem.java:462)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getHdfsFileStatus(WebHdfsFileSystem.java:781)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getFileStatus(WebHdfsFileSystem.java:796)
> at org.apache.hadoop.fs.Globber.getFileStatus(Globber.java:57)
> at org.apache.hadoop.fs.Globber.glob(Globber.java:248)
> at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:1623)
> at
> org.apache.hadoop.tools.GlobbedCopyListing.doBuildListing(GlobbedCopyListing.java:77)
> at org.apache.hadoop.tools.CopyListing.buildListing(CopyListing.java:81)
> at
> org.apache.hadoop.tools.DistCp.createInputFileListing(DistCp.java:342)
> at org.apache.hadoop.tools.DistCp.execute(DistCp.java:154)
> at org.apache.hadoop.tools.DistCp.run(DistCp.java:121)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at org.apache.hadoop.tools.DistCp.main(DistCp.java:390)
> Caused by: org.apache.hadoop.ipc.RemoteException(java.io.IOException): Failed
> to get the token for hadoopuser, user=hadoopuser
> at
> org.apache.hadoop.hdfs.web.JsonUtil.toRemoteException(JsonUtil.java:159)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:334)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$200(WebHdfsFileSystem.java:84)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:570)
> ... 30 more
> [hadoopuser@yjc5u-1 ~]$
> {code}
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