Alejandro Abdelnur created YARN-1321:
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Summary: NMTokenCache should not be a singleton
Key: YARN-1321
URL: https://issues.apache.org/jira/browse/YARN-1321
Project: Hadoop YARN
Issue Type: Bug
Components: client
Affects Versions: 2.2.0
Reporter: Alejandro Abdelnur
Assignee: Alejandro Abdelnur
Priority: Blocker
Fix For: 2.2.1
NMTokenCache is a singleton. Because of this, if running multiple AMs in a
single JVM NMTokens for the same node from different AMs step on each other and
starting containers fail due to mismatch tokens.
The error observed in the client side is something like:
{code}
ERROR org.apache.hadoop.security.UserGroupInformation:
PriviledgedActionException as:llama (auth:PROXY) via llama (auth:SIMPLE)
cause:org.apache.hadoop.yarn.exceptions.YarnException: Unauthorized request to
start container.
NMToken for application attempt : appattempt_1382038445650_0002_000001 was used
for starting container with container token issued for application attempt :
appattempt_1382038445650_0001_000001
{code}
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