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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3021) YARN's delegation-token handling disallows certain trust setups to operate properly over DistCp
Date Tue, 07 Apr 2015 07:01:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-3021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14482713#comment-14482713
] 

Hadoop QA commented on YARN-3021:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12723545/YARN-3021.007.patch
  against trunk revision 3fb5abf.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager:

                  org.apache.hadoop.mapreduce.lib.input.TestLineRecordReader
                  org.apache.hadoop.mapred.TestLineRecordReader
                  org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestCapacitySchedulerQueueACLs
                  org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesFairScheduler
                  org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesApps
                  org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesNodes
                  org.apache.hadoop.yarn.server.resourcemanager.security.TestAMRMTokens
                  org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestAllocationFileLoaderService
                  org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServices
                  org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStoreZKClientConnections
                  org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStore
                  org.apache.hadoop.yarn.server.resourcemanager.recovery.TestLeveldbRMStateStore
                  org.apache.hadoop.yarn.server.resourcemanager.recovery.TestZKRMStateStorePerf
                  org.apache.hadoop.yarn.server.resourcemanager.recovery.TestFSRMStateStore
                  org.apache.hadoop.yarn.server.resourcemanager.TestRMEmbeddedElector

                                      The following test timeouts occurred in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager:

org.apTests
org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesAppsModification

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/7233//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/7233//console

This message is automatically generated.

> YARN's delegation-token handling disallows certain trust setups to operate properly over
DistCp
> -----------------------------------------------------------------------------------------------
>
>                 Key: YARN-3021
>                 URL: https://issues.apache.org/jira/browse/YARN-3021
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.3.0
>            Reporter: Harsh J
>            Assignee: Yongjun Zhang
>         Attachments: YARN-3021.001.patch, YARN-3021.002.patch, YARN-3021.003.patch, YARN-3021.004.patch,
YARN-3021.005.patch, YARN-3021.006.patch, YARN-3021.007.patch, YARN-3021.patch
>
>
> Consider this scenario of 3 realms: A, B and COMMON, where A trusts COMMON, and B trusts
COMMON (one way trusts both), and both A and B run HDFS + YARN clusters.
> Now if one logs in with a COMMON credential, and runs a job on A's YARN that needs to
access B's HDFS (such as a DistCp), the operation fails in the RM, as it attempts a renewDelegationToken(…)
synchronously during application submission (to validate the managed token before it adds
it to a scheduler for automatic renewal). The call obviously fails cause B realm will not
trust A's credentials (here, the RM's principal is the renewer).
> In the 1.x JobTracker the same call is present, but it is done asynchronously and once
the renewal attempt failed we simply ceased to schedule any further attempts of renewals,
rather than fail the job immediately.
> We should change the logic such that we attempt the renewal but go easy on the failure
and skip the scheduling alone, rather than bubble back an error to the client, failing the
app submission. This way the old behaviour is retained.



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