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  1. Hadoop HDFS
  2. HDFS-6904

YARN unable to renew delegation token fetched via webhdfs due to incorrect service port

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.6.0
    • Component/s: webhdfs
    • Labels:
      None
    • Target Version/s:

      Description

      YARN is unable to renew delegation tokens obtained via the WebHDFS REST API. The scenario is as follows -

      1. User creates a delegation token using the WebHDFS REST API
      2. User passes this token to YARN as part of app submission(via the YARN REST API)
      3. When YARN tries to renew this delegation token, it fails because the token service is pointing to the RPC port but the token kind is WebHDFS.

      The exception is

      2014-08-19 03:12:54,733 WARN  security.DelegationTokenRenewer (DelegationTokenRenewer.java:handleDTRenewerAppSubmitEvent(661)) - Unable to add the application to the delegation token renewer.
      java.io.IOException: Failed to renew token: Kind: WEBHDFS delegation, Service: NameNodeIP:8020, Ident: (WEBHDFS delegation token 2222 for hrt_qa)
              at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer.handleAppSubmitEvent(DelegationTokenRenewer.java:394)
              at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer.access$5(DelegationTokenRenewer.java:357)
              at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$DelegationTokenRenewerRunnable.handleDTRenewerAppSubmitEvent(DelegationTokenRenewer.java:657)
              at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$DelegationTokenRenewerRunnable.run(DelegationTokenRenewer.java:638)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
              at java.lang.Thread.run(Thread.java:745)
      Caused by: java.io.IOException: Unexpected HTTP response: code=-1 != 200, op=RENEWDELEGATIONTOKEN, message=null
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:331)
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$200(WebHdfsFileSystem.java:90)
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:598)
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:448)
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner$1.run(WebHdfsFileSystem.java:477)
              at java.security.AccessController.doPrivileged(Native Method)
              at javax.security.auth.Subject.doAs(Subject.java:415)
              at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.run(WebHdfsFileSystem.java:473)
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.renewDelegationToken(WebHdfsFileSystem.java:1318)
              at org.apache.hadoop.hdfs.web.TokenAspect$TokenManager.renew(TokenAspect.java:73)
              at org.apache.hadoop.security.token.Token.renew(Token.java:377)
              at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$1.run(DelegationTokenRenewer.java:477)
              at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer$1.run(DelegationTokenRenewer.java:1)
              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.yarn.server.resourcemanager.security.DelegationTokenRenewer.renewToken(DelegationTokenRenewer.java:473)
              at org.apache.hadoop.yarn.server.resourcemanager.security.DelegationTokenRenewer.handleAppSubmitEvent(DelegationTokenRenewer.java:392)
              ... 6 more
      Caused by: java.io.IOException: The error stream is null.
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.jsonParse(WebHdfsFileSystem.java:304)
              at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:329)
              ... 24 more
      2014-08-19 03:12:54,735 DEBUG event.AsyncDispatcher (AsyncDispatcher.java:dispatch(164)) - Dispatching the event org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppRejectedEvent.EventType: APP_REJECTED
      

      I suspect the issue is that the Namenode generates a delegation token of kind WebHDFS but doesn't change the service port. When YARN tries to renew the delegation token, it ends up trying to contact WebHDFS on the RPC port.

      From NamenodeWebHdfsMethods.java

          case GETDELEGATIONTOKEN:
          {
            if (delegation.getValue() != null) {
              throw new IllegalArgumentException(delegation.getName()
                  + " parameter is not null.");
            }
            final Token<? extends TokenIdentifier> token = generateDelegationToken(
                namenode, ugi, renewer.getValue());
            final String js = JsonUtil.toJsonString(token);
            return Response.ok(js).type(MediaType.APPLICATION_JSON).build();
          }
      

      which in turn calls

        private Token<? extends TokenIdentifier> generateDelegationToken(
            final NameNode namenode, final UserGroupInformation ugi,
            final String renewer) throws IOException {
          final Credentials c = DelegationTokenSecretManager.createCredentials(
              namenode, ugi, renewer != null? renewer: ugi.getShortUserName());
          final Token<? extends TokenIdentifier> t = c.getAllTokens().iterator().next();
          Text kind = request.getScheme().equals("http") ? WebHdfsFileSystem.TOKEN_KIND
              : SWebHdfsFileSystem.TOKEN_KIND;
          t.setKind(kind);
          return t;
        }
      

      The command we used to get the delegation token is -

      curl -i -k -s --negotiate -u : 'http://NameNodeHost:50070/webhdfs/v1?op=GETDELEGATIONTOKEN&renewer=yarn'
      

        Attachments

        1. HDFS-6904.1.patch
          5 kB
          Jitendra Nath Pandey
        2. HDFS-6904.2.patch
          15 kB
          Jitendra Nath Pandey
        3. HDFS-6904.3.patch
          17 kB
          Jitendra Nath Pandey
        4. HDFS-6904.4.patch
          18 kB
          Jitendra Nath Pandey

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              • Assignee:
                jnp Jitendra Nath Pandey
                Reporter:
                vvasudev Varun Vasudev
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                Dates

                • Created:
                  Updated:
                  Resolved: