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Konstantin Shvachko commented on HDFS-6469: ------------------------------------------- You are right, on the client hflush() calls NN's fsync() once in the beginning of each block, because it does not update block's length. Thank you for the correction, Nicholas. > Coordinated replication of the namespace using ConsensusNode > ------------------------------------------------------------ > > Key: HDFS-6469 > URL: https://issues.apache.org/jira/browse/HDFS-6469 > Project: Hadoop HDFS > Issue Type: New Feature > Components: namenode > Affects Versions: 3.0.0 > Reporter: Konstantin Shvachko > Assignee: Konstantin Shvachko > Attachments: CNodeDesign.pdf > > > This is a proposal to introduce ConsensusNode - an evolution of the NameNode, > which enables replication of the namespace on multiple nodes of an HDFS > cluster by means of a Coordination Engine. -- This message was sent by Atlassian JIRA (v6.2#6252)