Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: hdfs-issues@hadoop.apache.org
Date: Thu, 9 Apr 2015 21:20:12 +0000 (UTC)
From: "Zhe Zhang (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12819836.1428614254000.46064.1428614412302@Atlassian.JIRA>
In-Reply-To: <JIRA.12819836.1428614254000@Atlassian.JIRA>
References: <JIRA.12819836.1428614254000@Atlassian.JIRA>
 <JIRA.12819836.1428614254957@arcas>
Subject: [jira] [Updated] (HDFS-8117) More accurate verification in
 SimulatedFSDataset: replace DEFAULT_DATABYTE with patterned data
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


     [ https://issues.apache.org/jira/browse/HDFS-8117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhe Zhang updated HDFS-8117:
----------------------------
    Attachment: HDFS-8117.000.patch

> More accurate verification in SimulatedFSDataset: replace DEFAULT_DATABYTE with patterned data
> ----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-8117
>                 URL: https://issues.apache.org/jira/browse/HDFS-8117
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-8117.000.patch
>
>
> Currently {{SimulatedFSDataset}} uses a single {{DEFAULT_DATABYTE}} to simulate _all_ block content. This is not accurate because the return of this byte just means the read request has hit an arbitrary position in an arbitrary simulated block.
> This JIRA aims to improve it with a more accurate verification. When position {{p}} of a simulated block {{b}} is accessed, the returned byte is {{b}}'s block ID plus {{p}}, moduled by the max value of a byte.


--
This message was sent by Atlassian JIRA
(v6.3.4#6332)