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https://issues.apache.org/jira/browse/HDFS-2922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eli Collins updated HDFS-2922:
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Target Version/s: (was: HA branch (HDFS-1623))
Fix Version/s: HA branch (HDFS-1623)
> HA: close out operation categories
> ----------------------------------
>
> Key: HDFS-2922
> URL: https://issues.apache.org/jira/browse/HDFS-2922
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Eli Collins
> Assignee: Eli Collins
> Fix For: HA branch (HDFS-1623)
>
> Attachments: hdfs-2922.txt, hdfs-2922.txt, hdfs-2922.txt,
> hdfs-2922.txt
>
>
> We need to close out the NN operations categories.
> The following operations should be left as is, ie not failover, as it's
> reasonable to call these on a standby, and we just need to update the TODO
> with a comment:
> - {{setSafeMode}} (Might want to force the standby out of safemode)
> - {{restoreFailedStorage}} (Might want to tell the standby to restore the
> shared edits dir)
> - {{saveNamespace}}, {{metaSave}} (Could imagine calling these on a standby
> eg in a recovery scenario)
> - {{refreshNodes}} (Decommissioning needs to refresh the standby)
> The following operations should be checked for READ, as neither should need
> to be called on standby, will failover unless stale reads are enabled:
> - {{getTransactionID}}, {{getEditLogManifest}} (we don't checkoint the
> standby)
> The following operations should be checked for WRITE, as they should not be
> called on a standby, ie should always failover:
> - {{finalizeUpgrade}}, {{distributedUpgradeProgress}} (should not be able to
> upgrade the standby)
> - {{setBalancerBandwidth}} (balancer should failover)
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