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https://issues.apache.org/jira/browse/HDDS-1153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16806921#comment-16806921
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Steve Loughran commented on HDDS-1153:
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Adding opentracing support is going to be good for hadoop, but at the same
time, if this starts to span more things than just ozone, please, pull it up
into HADOOP-15566 for more discussion.
> Make tracing instrumentation configurable
> -----------------------------------------
>
> Key: HDDS-1153
> URL: https://issues.apache.org/jira/browse/HDDS-1153
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Reporter: Elek, Marton
> Assignee: Kitti Nanasi
> Priority: Major
> Labels: newbie, pull-request-available
> Attachments: HDDS-1153.001.patch
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> TracingUtil.createProxy is a helper method to create a proxy instance with
> tracing support.
> The proxy instance implements the same interface as the original class and
> delegates all the method calls to the original instance but it also sends
> tracing information to the tracing server.
> By default it's not a big overhead as the tracing libraries can be configured
> to send tracing only with some low probability.
> But to make it more safe we can make it optional. With a global
> 'hdds.tracing.enabled' configuration variable (can be true by default) we can
> adjust the behavior of TracingUtil.createProxy.
> If the tracing is disabled the TracingUtil.createProxy should return with the
> 'delegate' parameter instead of a proxy.
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