[
https://issues.apache.org/jira/browse/HDFS-2795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon reassigned HDFS-2795:
---------------------------------
Assignee: Todd Lipcon (was: Aaron T. Myers)
> HA: Standby NN takes a long time to recover from a dead DN starting up
> ----------------------------------------------------------------------
>
> Key: HDFS-2795
> URL: https://issues.apache.org/jira/browse/HDFS-2795
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: data-node, ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Aaron T. Myers
> Assignee: Todd Lipcon
> Priority: Critical
>
> To reproduce:
> # Start an HA cluster with a DN.
> # Write several blocks to the FS with replication 1.
> # Shutdown the DN
> # Wait for the NNs to declare the DN dead. All blocks will be
> under-replicated.
> # Restart the DN.
> Note that upon restarting the DN, the active NN will immediately get all
> block locations from the initial BR. The standby NN will not, and instead
> will slowly add block locations for a subset of the previously-missing blocks
> on every DN heartbeat.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
