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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12949) Add HTrace to the s3a connector
Date Tue, 21 Nov 2017 10:03:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16260508#comment-16260508
] 

Steve Loughran commented on HADOOP-12949:
-----------------------------------------

Revisiting this

* yes, it would be good. 
* let's not worry about UA headers initially; a later iteration.
* more important: linking across jobs on long lived processes, e.g Spark, Hive LLAP. We want
those tools to create a context, it to propagate over with their queries, and the store clients
to pick that up.

Making a subclass of the S3A phase IV work, targeting Hadoop 3.1. 

Patches welcome!

> Add HTrace to the s3a connector
> -------------------------------
>
>                 Key: HADOOP-12949
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12949
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Madhawa Gunasekara
>            Assignee: Madhawa Gunasekara
>
> Hi All, 
> s3, GCS, WASB, and other cloud blob stores are becoming increasingly important in Hadoop.
But we don't have distributed tracing for these yet. It would be interesting to add distributed
tracing here. It would enable collecting really interesting data like probability distributions
of PUT and GET requests to s3 and their impact on MR jobs, etc.
> I would like to implement this feature, Please shed some light on this 
> Thanks,
> Madhawa



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