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https://issues.apache.org/jira/browse/HDFS-2481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13134220#comment-13134220
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Sanjay Radia commented on HDFS-2481:
------------------------------------
There are two ports - one for client (dfs client) and the other for the hdfs
service itself (ie datanodes).
The 2nd one was called "serviceRpcServer" and hence to be consistent I called
the first one clientRpcServer.
> Unknown protocol: org.apache.hadoop.hdfs.protocol.ClientProtocol
> ----------------------------------------------------------------
>
> Key: HDFS-2481
> URL: https://issues.apache.org/jira/browse/HDFS-2481
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Sanjay Radia
> Attachments: testFailures1.patch, testFailures2.patch
>
>
> A few unit tests are failing, e.g.
> {noformat}
> Test set: org.apache.hadoop.hdfs.TestDistributedFileSystem
> -------------------------------------------------------------------------------
> Tests run: 7, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 16.813 sec
> <<< FAILURE!
> testAllWithDualPort(org.apache.hadoop.hdfs.TestDistributedFileSystem) Time
> elapsed: 0.254 sec <<< ERROR!
> java.io.IOException: java.io.IOException: Unknown protocol:
> org.apache.hadoop.hdfs.protocol.ClientProtocol
> at
> org.apache.hadoop.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:615)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1517)
> ...
> {noformat}
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