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From "Robert Chansler (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-2797) Withdraw CRC upgrade from HDFS
Date Fri, 27 Jun 2008 20:57:45 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2797?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Chansler updated HADOOP-2797:
------------------------------------

    Release Note: Withdrew the upgrade-to-CRC facility. HDFS will no longer support upgrades
from versions without CRCs for block data. Users upgrading from version 0.13 or earlier must
first upgrade to an intermediate (0.14, 0.15, 0.16, 0.17) version before doing upgrade to
version 0.18 or later.  (was: HDFS will no longer support upgrades from versions without CRCs
for block data. Users upgrading from version 0.13 or earlier must first upgrade to an intermediate
(0.14, 0.15, 0.16, 0.17) version before upgrade to 0.18 or later.)

> Withdraw CRC upgrade from HDFS
> ------------------------------
>
>                 Key: HADOOP-2797
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2797
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>    Affects Versions: 0.13.0
>            Reporter: Robert Chansler
>            Assignee: Raghu Angadi
>            Priority: Critical
>             Fix For: 0.18.0
>
>         Attachments: hadoop-14-dfs-dir.tgz, HADOOP-2797.patch, HADOOP-2797.patch, HADOOP-2797.patch,
HADOOP-2797.patch
>
>
> HDFS will no longer support upgrades from versions without CRCs for block data. Users
upgrading from version 0.13 or earlier must first upgrade to an intermediate (0.14, 0.15,
0.16, 0.17) version before upgrade to 0.18 or later.

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