You are viewing a plain text version of this content. The canonical link for it is here.
Posted to mapreduce-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2012/12/08 01:01:20 UTC
[jira] [Updated] (MAPREDUCE-4862) Inconsistent synchronization in
yarn.server.rm.security.DelegationTokenRenewal
[ https://issues.apache.org/jira/browse/MAPREDUCE-4862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Karthik Kambatla updated MAPREDUCE-4862:
----------------------------------------
Description:
yarn.s.rm.security.DelegationTokenRenewer uses TimerTask/Timer. When such a timer task is canceled, already scheduled tasks run to completion. The task should check for such cancellation before running. Also, delegationTokens needs to be synchronized on all accesses.
was:
mapreduce.security.token.DelegationTokenRenewal synchronizes on removeDelegationToken, but fails to synchronize on addToken, and renewing tokens in run().
This inconsistency is exposed by frequent failures of TestDelegationTokenRenewal:
{noformat}
Error Message
renew wasn't called as many times as expected expected:<4> but was:<5>
Stacktrace
junit.framework.AssertionFailedError: renew wasn't called as many times as expected expected:<4> but was:<5>
at org.apache.hadoop.mapreduce.security.token.TestDelegationTokenRenewal.testDTRenewal(TestDelegationTokenRenewal.java:317)
at org.apache.hadoop.mapreduce.security.token.TestDelegationTokenRenewal.testDTRenewalAfterClose(TestDelegationTokenRenewal.java:338)
{noformat}
> Inconsistent synchronization in yarn.server.rm.security.DelegationTokenRenewal
> ------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4862
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4862
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: security
> Affects Versions: 1.1.1
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
>
> yarn.s.rm.security.DelegationTokenRenewer uses TimerTask/Timer. When such a timer task is canceled, already scheduled tasks run to completion. The task should check for such cancellation before running. Also, delegationTokens needs to be synchronized on all accesses.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira