This is for your Option 4:
you can take a look at HDFS-3077
In this umbrella JIRA, work is going actively.
@Ted, thanks for adding the link.
On Wed, Sep 5, 2012 at 4:39 AM, Uma Maheswara Rao G <[EMAIL PROTECTED]>wrote:
> Hi Sujee,
> Thanks a lot for your interest on HA.
> for #1
> If you can invest on NFS filers, it is another option. If you want to try
> this, you can use released Hadoop-2 version and try.
> but above #2 and #3 will avoid this external hardware dependency.
> for #2 you can take a look at HDFS-3399
> We are testing with BookeKeeper from last 2/3 months and going well. BK
> is progressing on autorecovery and security parts. Almost auto recoverry
> done(BOOKKEEPER-237) and will be released in BK 4.2 version very soon. BK
> already started work on security part as well. Also this integration part
> will come out with next hadoop-2 release as well. Also attached tested
> scenarios in HDFS-3399 for your reference if you want to take a look.
> Also there is one subTask in that umbrella JIRA for user manual
> for #3 you can take a look at HDFS-3077
> In this umbrella JIRA work is going on actively.
> for #4
> I am not sure any one working on it.
> The advantage here is, you can plugin the shared storage whichever you
> On Wed, Sep 5, 2012 at 4:07 AM, Sujee Maniyam <[EMAIL PROTECTED]> wrote:
>> Hello devs,
>> I am trying to understand the current state / direction of namenode
>> HA implementation.
>> For using shared directory, I see the following options
>> and https://issues.apache.org/jira/browse/HDFS-3278)
>> 1) rely on external HA filer
>> 2) multiple edit directories
>> 3) book keeper
>> 4) keep edits in HDFS / quorum based
>> is there going to be an 'official / supported' method, or it is going
>> to be a configurable choice when setting up a cluster?