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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5639) rpc scheduler abstraction
Date Sat, 07 Dec 2013 04:47:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13842073#comment-13842073
] 

Hadoop QA commented on HDFS-5639:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12617519/HDFS-5639-2.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 9 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-common-project/hadoop-common
hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.server.blockmanagement.TestBlocksWithNotEnoughRacks

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/5671//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5671//console

This message is automatically generated.

> 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-5639-2.patch, 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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