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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2922) HA: close out operation categories
Date Fri, 10 Feb 2012 12:57:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13205422#comment-13205422
] 

Hudson commented on HDFS-2922:
------------------------------

Integrated in Hadoop-Hdfs-HAbranch-build #74 (See [https://builds.apache.org/job/Hadoop-Hdfs-HAbranch-build/74/])
    HDFS-2922. HA: close out operation categories. Contributed by Eli Collins

eli : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1242572
Files : 
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryInvocationHandler.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-1623.txt
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DistributedFileSystem.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java

                
> 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
>         Attachments: 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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