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https://issues.apache.org/jira/browse/HDFS-11036?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Liang updated HDFS-11036:
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Attachment: HDFS-11036-HDFS-7240.004.patch
Thanks [~anu], [~xyao] and [~eddyxu] for the review and comments!
Uploaded v004 patch. In this patch, the cache has been replaced by a Guava
cache instance (thanks [~xyao] for the advice and offline discussion). Some
comments are no longer applicable, while for some others:
{{Could you provide tests for this patch to prove the correctness for the basic
cases?}}
This is definitely something I would like to have. While this JIRA was mainly
to unblock other HDFS-7240 JIRAs. Will file separate JIRA, after all the other
required HDFS-7240 code have been fully checked.
{{I saw you are using container name as key here, would it be an issue if two
clients / pipelines access the same container at the same time?}}
This is actually the purpose of using cache here: if two clients are accessing
the same container, they will use the same connection. And "pipeline" is
actually equal to "container" under the context of this JIRA.
> Ozone : reuse Xceiver connection
> --------------------------------
>
> Key: HDFS-11036
> URL: https://issues.apache.org/jira/browse/HDFS-11036
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Chen Liang
> Assignee: Chen Liang
> Attachments: HDFS-11036-HDFS-7240.001.patch,
> HDFS-11036-HDFS-7240.002.patch, HDFS-11036-HDFS-7240.003.patch,
> HDFS-11036-HDFS-7240.004.patch
>
>
> Currently for every IO operation calling into XceiverClientManager will
> open/close a connection, this JIRA proposes to reuse connection to reduce
> connection setup/shutdown overhead.
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