Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Date: Fri, 29 Sep 2017 21:43:10 +0000 (UTC)
From: "Arun Suresh (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12996326.1470847514000.241474.1506721390815@Atlassian.JIRA>
In-Reply-To: <JIRA.12996326.1470847514000@Atlassian.JIRA>
References: <JIRA.12996326.1470847514000@Atlassian.JIRA> <JIRA.12996326.1470847514655@jira-lw-us.apache.org>
Subject: [jira] [Updated] (HDFS-10743) MiniDFSCluster test runtimes can be
 drastically reduce
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
archived-at: Fri, 29 Sep 2017 21:43:27 -0000


     [ https://issues.apache.org/jira/browse/HDFS-10743?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun Suresh updated HDFS-10743:
-------------------------------

Is this still on target for 2.9.0 ? If not, can we we push this out to the next major release ?

> MiniDFSCluster test runtimes can be drastically reduce
> ------------------------------------------------------
>
>                 Key: HDFS-10743
>                 URL: https://issues.apache.org/jira/browse/HDFS-10743
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>    Affects Versions: 2.0.0-alpha
>            Reporter: Daryn Sharp
>            Assignee: Kuhu Shukla
>         Attachments: HDFS-10743.001.patch, HDFS-10743.002.patch, HDFS-10743.003.patch
>
>
> {{MiniDFSCluster}} tests have excessive runtimes.  The main problem appears to be the heartbeat interval.  The NN may have to wait up to 3s (default value) for all DNs to heartbeat, triggering registration, so NN can go active.  Tests that repeatedly restart the NN are severely affected.
> Example for varying heartbeat intervals for {{TestFSImageWithAcl}}:
> * 3s = ~70s -- (disgusting, why I investigated)
> * 1s = ~27s
> * 500ms = ~17s -- (had to hack DNConf for millisecond precision)
> That a 4x improvement in runtime.
> 17s is still excessively long for what the test does.  Further areas to explore when running tests:
> * Reduce numerous sleeps intervals in DN's {{BPServiceActor}}.
> * Ensure heartbeats and initial BR are sent immediately upon (re)registration.


--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org