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https://issues.apache.org/jira/browse/HDFS-11887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16031435#comment-16031435
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Mukul Kumar Singh commented on HDFS-11887:
------------------------------------------
Thanks for the comments [~vagarychen] and [~cheersyang]
This current code is based on use of Guava Cache in DFSClientCache.
I will add a test case as suggested :)
> XceiverClientManager should close XceiverClient on eviction from cache
> ----------------------------------------------------------------------
>
> Key: HDFS-11887
> URL: https://issues.apache.org/jira/browse/HDFS-11887
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Reporter: Mukul Kumar Singh
> Assignee: Mukul Kumar Singh
> Attachments: HDFS-11887-HDFS-7240.001.patch
>
>
> XceiverClientManager doesn't close client on eviction which can leak
> resources.
> {code}
> public XceiverClientManager(Configuration conf) {
> .
> .
> .
> public void onRemoval(
> RemovalNotification<String, XceiverClientWithAccessInfo>
> removalNotification) {
> // If the reference count is not 0, this xceiver client should
> not
> // be evicted, add it back to the cache.
> WithAccessInfo info = removalNotification.getValue();
> if (info.hasRefence()) {
> synchronized (XceiverClientManager.this.openClient) {
> XceiverClientManager.this
> .openClient.put(removalNotification.getKey(), info);
> }
> }
> {code}
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