Yi Liu created YARN-3055:
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Summary: Fix allTokens issue in DelegationTokenRenewer
Key: YARN-3055
URL: https://issues.apache.org/jira/browse/YARN-3055
Project: Hadoop YARN
Issue Type: Bug
Components: security
Reporter: Yi Liu
Assignee: Yi Liu
In {{removeApplicationFromRenewal}}, when going to remove a token, and the
token is shared by other jobs, we will not cancel the token.
Meanwhile, we should not cancel the _timerTask_, also we should not remove it
from {{allTokens}}. Otherwise for the existing submitted applications which
share this token will not get renew any more, and for new submitted
applications which share this token, the token will be renew immediately.
For example, we have 3 applications: app1, app2, app3. And they share the
token1. See following scenario:
*1).* app1 is submitted firstly, then app2, and then app3. In this case, there
is only one token renewal timer for token1, and is scheduled when app1 is
submitted
*2).* app1 is finished, then the renewal timer is cancelled. token1 will not be
renewed any more, but app2 and app3 still use it, so there is problem.
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