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From "Inigo Goiri (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11546) Federation Router RPC server
Date Thu, 13 Apr 2017 16:19:41 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11546?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Inigo Goiri updated HDFS-11546:
    Attachment: HDFS-11546-HDFS-10467-005.patch

Tackled [~chris.douglas] comments:
* Fields made final
* Fixed {{RemoteLocationContext#equals}}.
* Changed locking model and other fixes in {{ConnectionPool}}.
* {{ConnectionManager}} to use {{ScheduledThreadPoolExecutor}}.
* {{ConnectionPoolId}} to index connection pools instead of {{String}}.

Open issues:
* How do we link to HADOOP-12077 for {{RouterRpcClient#invokeSequential}} and {{RouterRpcClient#invokeConcurrent}}?
Do I extend the comment there? The current support is basic and it could be extended to mimic
HADOOP-12077 in a subsequent JIRA.
* {{RouterRpcServer}} there are a couple methods that should be reviewed, for example, {{create()}}
and {{getListing()}}.
* What kind of documentation would we add for the TODOs in {{RouterRpcServer}}?
* The values in {{hdfs-site.xml}} are similar to those for the Namenode. I can add some rule
of thumb there for setting them though.

I've been testing these at medium/large scale but I'd like to leave it baking for a week at
least to be confident on the performance of these changes. In the meanwhile, we can continue
with the review.

> Federation Router RPC server
> ----------------------------
>                 Key: HDFS-11546
>                 URL: https://issues.apache.org/jira/browse/HDFS-11546
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs
>    Affects Versions: HDFS-10467
>            Reporter: Inigo Goiri
>            Assignee: Inigo Goiri
>         Attachments: HDFS-11546-HDFS-10467-000.patch, HDFS-11546-HDFS-10467-001.patch,
HDFS-11546-HDFS-10467-002.patch, HDFS-11546-HDFS-10467-003.patch, HDFS-11546-HDFS-10467-004.patch,
> RPC server side of the Federation Router implements ClientProtocol.

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