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From "Aaron T. Myers" <...@cloudera.com>
Subject Re: Merge Namenode HA feature to 0.23
Date Wed, 07 Mar 2012 16:38:28 GMT
Likewise, +1 to merging all of those. HADOOP-7717 and HDFS-2430 are hard
requirements for the HA work, and the rest of those seem like strict
improvements to me. If they make the merge easier, then by all means do it.

I don't think you need to wait a day, either. I doubt anyone will object to
merging these to 0.23.

Thanks a lot, Suresh.

--
Aaron T. Myers
Software Engineer, Cloudera



On Wed, Mar 7, 2012 at 1:12 AM, Suresh Srinivas <suresh@hortonworks.com>wrote:

> Thanks Eli for the list. I have merged the bugs you identified to 0.23. I
> am in the process of merging HA change. I have several conflicts, stemming
> from the changes that are no in 0.23. Pushing following jiras to 0.23 will
> make the merge easier. I believe these are mostly straight forward changes:
>
> HADOOP-7557 Make IPC header be extensible
> HDFS-3003. Remove getHostPortString() from NameNode, replace it with
> NetUtils.getHostPortString().
> HADOOP-8108. Move method getHostPortString() from NameNode to NetUtils.
> HDFS-2764. TestBackupNode is racy.
> HDFS-2430. The number of failed or low-resource volumes the NN can tolerate
> should be configurable.
> HADOOP-7358. Improve log levels when exceptions caught in RPC handler.
> HDFS-2410. Further cleanup of hardcoded configuration keys and values.
> HDFS-2285. BackupNode should reject requests to modify namespace.
> HADOOP-7729. Send back valid HTTP response if user hits IPC port with HTTP
> GET.
> HADOOP-7717. Move handling of concurrent client fail-overs to
> RetryInvocationHandler
>
> If no one gets back to me in a day, I will start merging these to 0.23.
>
> On Sun, Mar 4, 2012 at 9:43 AM, Eli Collins <eli@cloudera.com> wrote:
>
> > Hey Suresh,
> >
> > +1  Sounds great. Thanks for volunteering!
> >
> > You'll probably want to merge HDFS-1580,  HDFS-1765, HDFS-2158,
> > HDFS-2188, HDFS-2334, HDFS-2476, HDFS-2477, and HDFS-2495 to branch-23
> > first as these conflict and the patch will contain a bunch of non-HA
> > stuff.
> >
> > Thanks,
> > Eli
> >
> > On Fri, Mar 2, 2012 at 6:15 PM, Suresh Srinivas <suresh@hortonworks.com>
> > wrote:
> > > Namenode HA (HDFS-1623) feature is now in trunk (yay!). It adds support
> > for
> > > namenode high availability with active and standby namenodes, with
> manual
> > > failover. I propose merging this feature to 0.23 branch. Recently
> > Nicholas
> > > merged protocol buffers/wire compatibility changes to 0.23. Merging
> > > Namenode HA into 0.23 will make it a significant release.
> > >
> > > I plan to complete this by next week after running some
> > nightly/regressions
> > > tests. Early next week, I plan to attach a 0.23 merge patch to
> HDFS-1623
> > > jira for people interested in reviewing the patch.
> > >
> > > Please vote.
> > >
> > > Regards,
> > > Suresh
> >
>

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