Re: [Updated] RE: current direction in namenode HA

2012-09-25 Thread Todd Lipcon
The quorum-based journal implementation is in HDFS-3077, soon to be merged to trunk. The BookKeeper-based implementation has been developed on trunk under a contrib/ module. Thanks -Todd On Tue, Sep 25, 2012 at 3:34 PM, Sujee Maniyam wrote: > and what branch is this work going into? > thanks >

Re: [Updated] RE: current direction in namenode HA

2012-09-25 Thread Sujee Maniyam
and what branch is this work going into? thanks Sujee On Mon, Sep 10, 2012 at 4:18 PM, Sujee Maniyam wrote: > Thanks very much for all your input! Much appreciated... >

Re: [Updated] RE: current direction in namenode HA

2012-09-10 Thread Sujee Maniyam
Thanks very much for all your input! Much appreciated...

[Updated] RE: current direction in namenode HA

2012-09-04 Thread Uma Maheswara Rao G
details in that JIRA. Regards, Uma From: Sujee Maniyam [su...@sujee.net] Sent: Wednesday, September 05, 2012 4:07 AM To: hdfs-dev@hadoop.apache.org Subject: current direction in namenode HA Hello devs, I am trying to understand the current state / direction

Re: current direction in namenode HA

2012-09-04 Thread Uma Maheswara Rao G
small correction: 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. Regards, Uma On Wed, Sep 5, 2012 at 4:39 AM, Uma Maheswara Rao G wrote: > Hi Sujee, > > Thanks a lot for your interest on HA. >

Re: current direction in namenode HA

2012-09-04 Thread Ted Yu
Uma: Attachment is stripped in this mailing list. I guess you were trying to attach this file: https://issues.apache.org/jira/secure/attachment/12538911/BKTestDoc.pdf On Tue, Sep 4, 2012 at 4:09 PM, Uma Maheswara Rao G wrote: > Hi Sujee, > > Thanks a lot for your interest on HA. > > for #1 > If y

Re: current direction in namenode HA

2012-09-04 Thread Uma Maheswara Rao G
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

Re: current direction in namenode HA

2012-09-04 Thread Aaron T. Myers
Hi Sujee, On Tue, Sep 4, 2012 at 3:37 PM, Sujee Maniyam wrote: > I am trying to understand the current state / direction of namenode > HA implementation. > Thanks for the interest. > > For using shared directory, I see the following options > (from > http://www.cloudera.com/blog/2012/03/high

current direction in namenode HA

2012-09-04 Thread Sujee Maniyam
Hello devs, I am trying to understand the current state / direction of namenode HA implementation. For using shared directory, I see the following options (from http://www.cloudera.com/blog/2012/03/high-availability-for-the-hadoop-distributed-file-system-hdfs/ and https://issues.apache.org/j