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https://issues.apache.org/jira/browse/HADOOP-14601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16066245#comment-16066245
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Steve Loughran commented on HADOOP-14601:
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I just checked about object mapper thread safety and yes, once configured it's
thread safe: no reason not to do this. Let's see what yetus says
> Azure: Reuse ObjectMapper
> -------------------------
>
> Key: HADOOP-14601
> URL: https://issues.apache.org/jira/browse/HADOOP-14601
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fa/azure
> Reporter: Mingliang Liu
> Assignee: Mingliang Liu
> Attachments: HADOOP-14601.000.patch
>
>
> Currently there are a few places in {{hadoop-azure}} module that uses creates
> {{ObjectMapper}} for each request/call. We should re-use the object mapper
> for performance purpose.
> The general caveat is about thread safety; I think the change will be safe
> though.
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