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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12537) Ozone: Reduce key creation overhead in Corona
Date Thu, 28 Sep 2017 23:00:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16185070#comment-16185070
] 

Anu Engineer commented on HDFS-12537:
-------------------------------------

[~ljain] Looks very good to me. Thanks for getting this done. Two very minor comments.

1. Can we make the OptimizeWrite the default option so while testing I don't have to specify
that. So the option will be reverse like "DoNotUseFastWrite" or something. I will tell you
when not to use that fast option.
2. Can we please add the Date time of the execution itself. So example, if I look at a json
file later, I would like to know date and time when the execution happened.

With those changes, the patch looks good to me.

cc: [~nandakumar131]





> Ozone: Reduce key creation overhead in Corona
> ---------------------------------------------
>
>                 Key: HDFS-12537
>                 URL: https://issues.apache.org/jira/browse/HDFS-12537
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Lokesh Jain
>            Assignee: Lokesh Jain
>         Attachments: HDFS-12537-HDFS-7240.001.patch, HDFS-12537-HDFS-7240.002.patch
>
>
> Currently Corona creates random key values for each key. This creates a lot of overhead.
An option should be provided to use a single key value.



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