[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-09-10 Thread Dmitry Salychev (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14128133#comment-14128133 ] Dmitry Salychev commented on HDFS-6469: --- Will failure of CoordinationEngine cause

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-09-10 Thread Konstantin Boudnik (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14128169#comment-14128169 ] Konstantin Boudnik commented on HDFS-6469: -- No, active-active model has strong

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-09-10 Thread Konstantin Boudnik (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14128172#comment-14128172 ] Konstantin Boudnik commented on HDFS-6469: -- So, any feedback on the urge of having

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-09-03 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14120723#comment-14120723 ] Konstantin Shvachko commented on HDFS-6469: --- Thanks for the thoughts, Sanjay. I

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-09-03 Thread Todd Lipcon (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14120753#comment-14120753 ] Todd Lipcon commented on HDFS-6469: --- bq. Total of 12 nodes, but with only one being

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-09-03 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14120771#comment-14120771 ] Konstantin Shvachko commented on HDFS-6469: --- Sanjay, we have been back and forth

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-09-03 Thread Konstantin Boudnik (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14120851#comment-14120851 ] Konstantin Boudnik commented on HDFS-6469: -- bq, One really needs a paxos library

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-08-26 Thread Sanjay Radia (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14111655#comment-14111655 ] Sanjay Radia commented on HDFS-6469: My thoughts: * I do believe that Paxos based NN

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-08-25 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14110057#comment-14110057 ] Konstantin Shvachko commented on HDFS-6469: --- Heads up on further actions. The

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-24 Thread Konstantin Boudnik (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14073745#comment-14073745 ] Konstantin Boudnik commented on HDFS-6469: -- Almost as in a couple of months from

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-22 Thread Ravi Prakash (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14070061#comment-14070061 ] Ravi Prakash commented on HDFS-6469: Cos had mentioned during the meetup that there was

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-21 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14069598#comment-14069598 ] Konstantin Shvachko commented on HDFS-6469: --- ??to be practical it needs to be an

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-21 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14069597#comment-14069597 ] Konstantin Shvachko commented on HDFS-6469: --- ??A customer can use just QJM (which

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-21 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14069612#comment-14069612 ] Konstantin Shvachko commented on HDFS-6469: --- Sanjay, the discussion can go on for

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-15 Thread Sanjay Radia (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14062502#comment-14062502 ] Sanjay Radia commented on HDFS-6469: bq. I meant that if you use QJM then every update

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-15 Thread Sanjay Radia (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14062559#comment-14062559 ] Sanjay Radia commented on HDFS-6469: Todd said: bq. a fully usable solution would be

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-10 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14057235#comment-14057235 ] Konstantin Shvachko commented on HDFS-6469: --- [~atm] requested an answer to Todd's

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-09 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14056634#comment-14056634 ] Konstantin Shvachko commented on HDFS-6469: --- You are right, on the client

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-08 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14054545#comment-14054545 ] Konstantin Shvachko commented on HDFS-6469: --- Sanjay, by not increasing journaling

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-08 Thread Tsz Wo Nicholas Sze (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14055002#comment-14055002 ] Tsz Wo Nicholas Sze commented on HDFS-6469: --- hflush() does not necessarily

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-07-01 Thread Sanjay Radia (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14049227#comment-14049227 ] Sanjay Radia commented on HDFS-6469: Wrt to double journaling bq. If I follow your

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-06-24 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14042133#comment-14042133 ] Konstantin Shvachko commented on HDFS-6469: --- Maysam, most of your questions are

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-06-14 Thread Maysam Yabandeh (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14031686#comment-14031686 ] Maysam Yabandeh commented on HDFS-6469: --- Very interesting document indeed! I think as

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-06-10 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14027179#comment-14027179 ] Konstantin Shvachko commented on HDFS-6469: --- h4. Coordinated reads The

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-06-09 Thread Todd Lipcon (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14026135#comment-14026135 ] Todd Lipcon commented on HDFS-6469: --- I have a few concerns about this: h3. Fine grained

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-06-07 Thread Lohit Vijayarenu (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14020875#comment-14020875 ] Lohit Vijayarenu commented on HDFS-6469: Still reading design document. One

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-06-07 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14021017#comment-14021017 ] Konstantin Shvachko commented on HDFS-6469: --- Suresh, your questions are right to

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-06-07 Thread Konstantin Shvachko (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14021021#comment-14021021 ] Konstantin Shvachko commented on HDFS-6469: --- Lohit, you are right this phrase

[jira] [Commented] (HDFS-6469) Coordinated replication of the namespace using ConsensusNode

2014-06-06 Thread Suresh Srinivas (JIRA)
[ https://issues.apache.org/jira/browse/HDFS-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14020375#comment-14020375 ] Suresh Srinivas commented on HDFS-6469: --- I had a cursory look at the document. I am