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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5639) rpc scheduler abstraction
Date Fri, 06 Dec 2013 18:57:36 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5639?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Ming Ma updated HDFS-5639:

    Attachment: HDFS-5639.patch

> rpc scheduler abstraction
> -------------------------
>                 Key: HDFS-5639
>                 URL: https://issues.apache.org/jira/browse/HDFS-5639
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ming Ma
>         Attachments: HDFS-5639.patch
> We have run into various issues in namenode and hbase w.r.t. rpc handling in multi-tenant
clusters. The examples are
> https://issues.apache.org/jira/i#browse/HADOOP-9640
>  https://issues.apache.org/jira/i#browse/HBASE-8836
> There are different ideas on how to prioritize rpc requests. It could be based on user
id, or whether it is read request or write request, or it could use specific rule like datanode's
RPC is more important than client RPC.
> We want to enable people to implement and experiiment different rpc schedulers.

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