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https://issues.apache.org/jira/browse/HDFS-2731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13222693#comment-13222693
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Todd Lipcon commented on HDFS-2731:
-----------------------------------
Here's an example output:
{code}
=====================================================
About to bootstrap Standby ID nn2 from:
Nameservice ID: nameserviceId1
Other Namenode ID: nn1
Other NN's HTTP address: todd-w510:50081
Other NN's IPC address: todd-w510/127.0.0.1:8021
Namespace ID: 1273108605
Block pool ID: BP-2075569167-127.0.0.1-1330663690093
Cluster ID: CID-d2c547b6-1a29-4bd9-a1fa-d5fdba8120f1
Layout version: -40
=====================================================
Re-format filesystem in /tmp/name2-name ? (Y or N) y
Re-format filesystem in /tmp/name2-name2 ? (Y or N) y
12/03/05 14:34:53 INFO namenode.NNStorage: Storage directory /tmp/name2-name
has been successfully formatted.
12/03/05 14:34:53 INFO namenode.NNStorage: Storage directory /tmp/name2-name2
has been successfully formatted.
12/03/05 14:34:54 INFO namenode.TransferFsImage: Downloaded file
fsimage.ckpt_0000000000000000026 size 143 bytes.
12/03/05 14:34:54 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at todd-w510/127.0.0.1
************************************************************/
{code}
If the directories don't exist, the confirmation prompt is not printed.
The above manual test also was run with security enabled.
> HA: Autopopulate standby name dirs if they're empty
> ---------------------------------------------------
>
> Key: HDFS-2731
> URL: https://issues.apache.org/jira/browse/HDFS-2731
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: ha
> Affects Versions: 0.24.0
> Reporter: Aaron T. Myers
> Assignee: Todd Lipcon
> Attachments: hdfs-2731.txt
>
>
> To setup a SBN we currently format the primary then manually copy the name
> dirs to the SBN. The SBN should do this automatically. Specifically, on NN
> startup, if HA with a shared edits dir is configured and populated, if the
> SBN has empty name dirs it should downloads the image and log from the
> primary (as an optimization it could copy the logs from the shared dir). If
> the other NN is still in standby then it should fail to start as it does
> currently.
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