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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11846) Ozone: Fix Http connection leaks in ozone clients
Date Fri, 26 May 2017 17:55:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16026586#comment-16026586

Anu Engineer commented on HDFS-11846:

[~xyao] thanks for committing this and [~cheersyang] Thanks for fixing this issue. A minor
question, It looks like we have brought in a *Nullable* annotation from *avro* , should we
do that ? 

{{import org.apache.avro.reflect.Nullable}}

If this is not intentional, I will file a jira to clean up this dependency later. I am +1
on this commit.

> Ozone: Fix Http connection leaks in ozone clients
> -------------------------------------------------
>                 Key: HDFS-11846
>                 URL: https://issues.apache.org/jira/browse/HDFS-11846
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>             Fix For: HDFS-7240
>         Attachments: HDFS-11846-HDFS-7240.001.patch, HDFS-11846-HDFS-7240.002.patch
> There are several problems
> # Http clients in {{OzoneVolume}}, {{OzoneBucket}} and {{OzoneClient}} are created per
request, per [Reuse of HttpClient instance|http://hc.apache.org/httpclient-3.x/performance.html#Reuse_of_HttpClient_instance]
doc, proposed to reuse the http client instance to reduce the over head.
> # Some resources in these classes were not properly cleaned up. E.g the http connection,
HttpGet/HttpPost requests.
> This jira's purpose is to fix these issues and investigate how we can improve the client.

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