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Posted to hdfs-issues@hadoop.apache.org by "Simbarashe Dzinamarira (Jira)" <ji...@apache.org> on 2022/12/21 19:21:00 UTC
[jira] [Assigned] (HDFS-16876) Connection manager should not remove namespaceStateId from shared RouterStateIdContext during pool cleanup.
[ https://issues.apache.org/jira/browse/HDFS-16876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Simbarashe Dzinamarira reassigned HDFS-16876:
---------------------------------------------
Assignee: Simbarashe Dzinamarira
> Connection manager should not remove namespaceStateId from shared RouterStateIdContext during pool cleanup.
> -----------------------------------------------------------------------------------------------------------
>
> Key: HDFS-16876
> URL: https://issues.apache.org/jira/browse/HDFS-16876
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: rbf
> Reporter: Simbarashe Dzinamarira
> Assignee: Simbarashe Dzinamarira
> Priority: Critical
>
> When cleaning up stale connection pools, the ConnectionManager also removes the associated namespaceStateId from the shared map in the RouterStateIdContext. This is incorrect because this namespaceStateId may still be referenced by other connection pools.
> The consequences of this premature removal include
> * No FederatedRouterState being sent back to clients.
> * PoolAlignmentContext objects keeping references to namespaceStateIds that's aren't in the shared map.
> https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/ConnectionManager.java#L457
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