[
https://issues.apache.org/jira/browse/HDFS-6038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13918659#comment-13918659
]
Tsz Wo (Nicholas), SZE commented on HDFS-6038:
----------------------------------------------
We use uint32 for the layoutVersion in StorageInfoProto. So let's do the same
for StartLogSegmentRequestProto. Patch looks good other than that.
> JournalNode hardcodes NameNodeLayoutVersion in the edit log file
> ----------------------------------------------------------------
>
> Key: HDFS-6038
> URL: https://issues.apache.org/jira/browse/HDFS-6038
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, ha, hdfs-client, namenode
> Reporter: Haohui Mai
> Assignee: Jing Zhao
> Attachments: HDFS-6038.000.patch
>
>
> In HA setup, the JNs receive edit logs (blob) from the NN and write into edit
> log files. In order to write well-formed edit log files, the JNs prepend a
> header for each edit log file.
> The problem is that the JN hard-codes the version (i.e.,
> {{NameNodeLayoutVersion}} in the edit log, therefore it generates incorrect
> edit logs when the newer release bumps the {{NameNodeLayoutVersion}} during
> rolling upgrade.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
