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https://issues.apache.org/jira/browse/HDFS-15380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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tomscut updated HDFS-15380:
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Attachment: (was: PATCH)
> Could not fetch real remote ip in RouterWebHdfsMethods.java
> -----------------------------------------------------------
>
> Key: HDFS-15380
> URL: https://issues.apache.org/jira/browse/HDFS-15380
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 3.1.0
> Reporter: tomscut
> Priority: Minor
> Labels: router, webhdfs
> Attachments: HDFS-15380.001.patch
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> We plan to add audit log for hdfs router, then we fetch remote ip via
> Server.getRemoteIp(), but the result is "localhost/127.0.0.1".
>
> "REMOTE_ADDRESS" in RouterWebHdfsMethods.java is a ThreadLocal field, setting
> in construction method RouterWebHdfsMethods() and init(). When we call method
> Server.getRemoteIp() to fetch remote ip, the thread would be changed, so the
> ThreadLocal field "REMOTE_ADDRESS" is null, and would be passed to
> "localhost/127.0.0.1" via InetAddress.getByName().
>
> So we can change this field "REMOTE_ADDRESS" to a String value, just like
> NamenodeWebHdfsMethods does.
>
> {code:java}
> 2020-05-27 19:15:18,797 INFO router.RouterWebHdfsMethods
> (RouterWebHdfsMethods.java:<init>(138)) - RouterWebHdfsMethods
> REMOTE_ADDRESS: 14.39.39.28, current thread: qtp476579021-10902020-05-27
> 19:15:18,827 INFO router.RouterWebHdfsMethods
> (RouterWebHdfsMethods.java:init(150)) - init REMOTE_ADDRESS: 14.39.39.28,
> current thread: qtp476579021-10902020-05-27 19:15:18,836 INFO
> router.RouterWebHdfsMethods (RouterWebHdfsMethods.java:getRemoteAddr(170)) -
> getRemoteAddr REMOTE_ADDRESS: null, current thread: IPC Server handler 75 on
> 88882020-05-27 19:15:18,837 INFO router.RouterWebHdfsMethods
> (RouterWebHdfsMethods.java:getRemoteAddr(170)) - getRemoteAddr
> REMOTE_ADDRESS: null, current thread: IPC Server handler 75 on 88882020-05-27
> 19:15:18,883 INFO router.RouterWebHdfsMethods
> (RouterWebHdfsMethods.java:reset(164)) - reset REMOTE_ADDRESS: null, current
> thread: IPC Server handler 75 on 8888
> {code}
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