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From "Yiqun Lin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11712) Ozone: Reuse ObjectMapper instance to improve the performance
Date Thu, 27 Apr 2017 14:36:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yiqun Lin updated HDFS-11712:
-----------------------------
    Attachment: HDFS-11712-HDFS-7240.001.patch

> Ozone: Reuse ObjectMapper instance to improve the performance
> -------------------------------------------------------------
>
>                 Key: HDFS-11712
>                 URL: https://issues.apache.org/jira/browse/HDFS-11712
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Yiqun Lin
>            Assignee: Yiqun Lin
>         Attachments: HDFS-11712-HDFS-7240.001.patch
>
>
> In the ozone, there are many places using {{ObjectMapper}} to do the object-json transformation.
From the page of {{ObjectMapper}} (https://github.com/FasterXML/jackson-docs/wiki/Presentation:-Jackson-Performance),
{{ObjectMapper}} is a heavy-weight object, it not a good bevahiour  to create this instance
everywhere.



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