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https://issues.apache.org/jira/browse/HDDS-1154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-1154:
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Labels: pull-request-available (was: )
> Add tracing to the client side of StorageContainerLocationProtocol and
> OzoneManagerProtocol
> -------------------------------------------------------------------------------------------
>
> Key: HDDS-1154
> URL: https://issues.apache.org/jira/browse/HDDS-1154
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Elek, Marton
> Assignee: Elek, Marton
> Priority: Major
> Labels: pull-request-available
>
> The best way to display the network performance in the tracing server is to
> start a new span (=save tracing information) on both of the client and and
> server side.
> This issue is about improving the client side tracing of OzoneManager and
> StorageLocationManager.
> The easiest way to turn on tracing for a class which implements an interface
> is to create a java proxy with TracingUtil.createProxy. With this utility we
> can execute the required tracing methods (create span/close span) around the
> original methods without adding any boilerplate code.
> Thanks to the current design hadoop rpc calls are create by the
> *ClientSideTranslatorPB classes which implements the original protocol
> interface (eg. StorageContainerLocationProtocolClientSideTranslatorPB
> implements StorageContainerLocationProtocol) which means that it can easily
> instrumented by TracingUtil.createProxy.
> The only thing what we need is to use the interface everywhere
> (StorageContainerLocationProtocol) instead of the implementation
> (ClientSideTranslator) as a client.
> The only required method which is not published in the ClientSideTranslator
> is the close method. With adding the close method to the interface (extends
> Closable) we are able to use the interface everywhere which can be
> instrumented to send the tracing information.
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