[jira] [Commented] (HDDS-1427) Differentiate log messages by service instance in test output

["mingchao zhao (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDDS-1427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17650664#comment-17650664 ] 

mingchao zhao commented on HDDS-1427:
-------------------------------------

Ozone 1.3.0 had been released and we currently have more than 600 open issues targeted for 1.3.0. I am moving the target field to 1.4.0.

If there is anything needs to be discussed about the Target Version, Please reach out to me via Apache email or Slack.

> Differentiate log messages by service instance in test output
> -------------------------------------------------------------
>
>                 Key: HDDS-1427
>                 URL: https://issues.apache.org/jira/browse/HDDS-1427
>             Project: Apache Ozone
>          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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