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https://issues.apache.org/jira/browse/BOOKKEEPER-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13414475#comment-13414475
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Uma Maheswara Rao G commented on BOOKKEEPER-300:
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Check the similar discussion about DN format in HDFS. HDFS-107.
If you see, DN also can not start, if you format namenode due to incompatible
namespace IDs. In that case, Admins carefully, have to clean their storage
directories.
We have decided that just have to provide the automation script to delete the
storage directories.
Now, by looking at your patch, you are doing both the jobs in format. Actually
metadata formation is not required to do in all the nodes. That will be just
one time job if I understand your idea correctly. In one node, you will create
metadata directories and from other nodes again you will recreate them and
continue the same in remaining nodes?
Do we need to separate this jobs cleanly? Otherwise someone need to give the
metadata format confirmation for first node and should skip for remaining. This
may not quit correct right?
{quote}
leaving other nodes ( cookies, LAYOOUT ) as it is
{quote}
Sijie can give thoughts on this.
I guess LAYOUT files may contain some version related stuff as well. So, take a
case, I have formatted the cluster and installed the newer version of BKs and
trying to start the cluster. Then we may get incompatible format issues because
LAYOUT may have older version related stuff right? Since I have formatted
cluster, I should not have any active info which is related to older.
Hi All, could you also please participate in the discussion for better ideas?
> Create Bookie format command
> ----------------------------
>
> Key: BOOKKEEPER-300
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-300
> Project: Bookkeeper
> Issue Type: New Feature
> Components: bookkeeper-server
> Affects Versions: 4.1.0
> Reporter: Rakesh R
> Attachments: BOOKKEEPER-300.patch
>
>
> Provide a bookie format command. Then the admin would just have to run the
> command on each machine, which will prepare the bookie env
> +Zookeeper paths (znodes):+
> - ledger's root path
> - bookie's available path
> +Directories:+
> - Journal directories
> - Ledger directories
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