[
https://issues.apache.org/jira/browse/HADOOP-9932?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Aaron T. Myers reassigned HADOOP-9932:
--------------------------------------
Assignee: Aaron T. Myers (was: Kihwal Lee)
> Improper synchronization in RetryCache
> --------------------------------------
>
> Key: HADOOP-9932
> URL: https://issues.apache.org/jira/browse/HADOOP-9932
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Kihwal Lee
> Assignee: Aaron T. Myers
> Priority: Blocker
> Fix For: 3.0.0, 2.1.1-beta
>
> Attachments: HADOOP-9932.patch, HADOOP-9932.patch
>
>
> In LightWeightCache#evictExpiredEntries(), the precondition check can fail.
> [~patwhitey2007] ran a HA failover test and it occurred while the SBN was
> catching up with edits during a transition to active. This caused NN to
> terminate.
> Here is my theory: If an RPC handler calls waitForCompletion() and it happens
> to remove the head of the queue in get(), it will race with
> evictExpiredEntries() frrom put().
--
This message was sent by Atlassian JIRA
(v6.1#6144)
