[ https://issues.apache.org/jira/browse/HDFS-259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923328#action_12923328 ]
Konstantin Shvachko commented on HDFS-259: ------------------------------------------ > This patch simply removes the code that creates this directory and looks for > it. Not so easy. You should guarantee that it throws an exception, when somebody tries to upgrade from a very old version. The exception should explain what steps are required to get to current version. That is why I think removing isConversionNeeded() is a mistake. Let me know if you need old images for testing. I keep those handy just in case. > Remove intentionally corrupt 0.13 directory layout creation > ----------------------------------------------------------- > > Key: HDFS-259 > URL: https://issues.apache.org/jira/browse/HDFS-259 > Project: Hadoop HDFS > Issue Type: Sub-task > Affects Versions: 0.22.0 > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Attachments: hdfs-259.txt > > > Given that 0.13 is incredibly old at this point, I think the likelihood of > anyone trying to start an 0.20+ namenode on an 0.13 directly layout is > essentially nil. The intentionally-corrupt "${dfs.name.dir}/image/" directory > just serves to confuse new users at this point, so I propose removing it. > If no one objects, I'll submit a patch. If there are objections, I propose at > least adding a README explaining its purpose (same text as in the corrupt > fsimage file) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.