[
https://issues.apache.org/jira/browse/HDFS-15249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17071448#comment-17071448
]
Wei-Chiu Chuang commented on HDFS-15249:
----------------------------------------
[~brfrn169] I assume you saw ConcurrentModificationException thrown in the
DataNode. Can you post the stacktrace for future reference?
> ThrottledAsyncChecker is not thread-safe.
> -----------------------------------------
>
> Key: HDFS-15249
> URL: https://issues.apache.org/jira/browse/HDFS-15249
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: federation
> Reporter: Toshihiro Suzuki
> Assignee: Toshihiro Suzuki
> Priority: Major
>
> ThrottledAsyncChecker should be thread-safe because it can be used by
> multiple threads when we have multiple namespaces.
> *checksInProgress* and *completedChecks* are respectively HashMap and
> WeakHashMap which are not thread-safe. So we need to put them in synchronized
> block whenever we access them.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
