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https://issues.apache.org/jira/browse/HDDS-1427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal reassigned HDDS-1427:
-----------------------------------
Assignee: Arpit Agarwal
> Differentiate log messages by service instance in test output
> -------------------------------------------------------------
>
> Key: HDDS-1427
> URL: https://issues.apache.org/jira/browse/HDDS-1427
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: test
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Priority: Major
>
> When running tests, the log output from multiple services is interleaved.
> This makes it very hard to follow the sequence of events.
> This is especially seen with MiniOzoneChaosCluster which starts 20 DataNodes
> in the same process.
> One way we can do this is by using [Log4j
> NDC|https://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/NDC.html]
> or [slf4j MDC|https://www.slf4j.org/api/org/slf4j/MDC.html] to print the PID
> and thread name/thread ID. It probably won't be a simple change.
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