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https://issues.apache.org/jira/browse/HDFS-15249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17071455#comment-17071455
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Toshihiro Suzuki edited comment on HDFS-15249 at 3/31/20, 4:37 AM:
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[~weichiu] Thank you for taking a look at this. Actually, I didn't see any
Exceptions from this issue. When I checked the source code for another issue, I
found this issue. Thanks.
was (Author: brfrn169):
[~weichiu] Thank you for taking look at this. Actually, I didn't see any
Exceptions from this issue. When I checked the source code for another issue, I
found this issue. Thanks.
> 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.
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