Wang, Xinglong created YARN-10735:
-------------------------------------
Summary: Unmanaged AM is won't populate AMRMToken to
ApplicationReport in secure cluster
Key: YARN-10735
URL: https://issues.apache.org/jira/browse/YARN-10735
Project: Hadoop YARN
Issue Type: Bug
Reporter: Wang, Xinglong
Assignee: Wang, Xinglong
With kerberos enabled, NPE will be reported when launching UnmanagedAMLauncher.
It is due to there is no AMRMToken is returned in ApplicationReport. After a
while investigation, it turns out that RMAppImpl has a bad if condition inside
createAndGetApplicationReport
{code:java}
21/04/14 02:46:01 INFO unmanagedamlauncher.UnmanagedAMLauncher: Initializing
Client
21/04/14 02:46:02 INFO unmanagedamlauncher.UnmanagedAMLauncher: Starting Client
21/04/14 02:46:02 INFO client.AHSProxy: Connecting to Application History
server at /0.0.0.0:10200
21/04/14 02:46:02 INFO unmanagedamlauncher.UnmanagedAMLauncher: Setting up
application submission context for ASM
21/04/14 02:46:02 INFO client.ConfiguredRMFailoverProxyProvider: Failing over
to rm2
21/04/14 02:46:02 INFO unmanagedamlauncher.UnmanagedAMLauncher: Setting
unmanaged AM
21/04/14 02:46:02 INFO unmanagedamlauncher.UnmanagedAMLauncher: Submitting
application to ASM
21/04/14 02:46:03 INFO impl.YarnClientImpl: Submitted application
application_1618393442264_0002
21/04/14 02:46:04 INFO unmanagedamlauncher.UnmanagedAMLauncher: Got application
report from ASM for, appId=2,
appAttemptId=appattempt_1618393442264_0002_000001, clientToAMToken=Token {
kind: YARN_CLIENT_TOKEN, service: }, appDiagnostics=AM container is launched,
waiting for AM container to Register with RM, appMasterHost=N/A,
appQueue=hdmi-default, appMasterRpcPort=-1, appStartTime=1618393562917,
yarnAppState=ACCEPTED, distributedFinalState=UNDEFINED, appTrackingUrl=N/A,
appUser=b_carmel
21/04/14 02:46:04 INFO unmanagedamlauncher.UnmanagedAMLauncher: Launching AM
with application attempt id appattempt_1618393442264_0002_000001
21/04/14 02:46:04 FATAL unmanagedamlauncher.UnmanagedAMLauncher: Error running
Client
java.lang.NullPointerException
at
org.apache.hadoop.yarn.applications.unmanagedamlauncher.UnmanagedAMLauncher.launchAM(UnmanagedAMLauncher.java:186)
at
org.apache.hadoop.yarn.applications.unmanagedamlauncher.UnmanagedAMLauncher.run(UnmanagedAMLauncher.java:354)
at
org.apache.hadoop.yarn.applications.unmanagedamlauncher.UnmanagedAMLauncher.main(UnmanagedAMLauncher.java:111)
{code}
{code:java}
public ApplicationReport createAndGetApplicationReport(String clientUserName,
boolean allowAccess) {
......
if (currentAttempt != null &&
currentAttempt.getAppAttemptState() == RMAppAttemptState.LAUNCHED) {
if (getApplicationSubmissionContext().getUnmanagedAM() &&
clientUserName != null && getUser().equals(clientUserName)) {
Token<AMRMTokenIdentifier> token = currentAttempt.getAMRMToken();
if (token != null) {
amrmToken = BuilderUtils.newAMRMToken(token.getIdentifier(),
token.getKind().toString(), token.getPassword(),
token.getService().toString());
}
}
}
{code}
clientUserName is fullName of a kerberos principle like a...@domain.com whereas
getUser() will return the username recorded in RMAppImpl which is short name.
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