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Jing Zhao commented on HDFS-8823: --------------------------------- +1 for the latest patch. > Move replication factor into individual blocks > ---------------------------------------------- > > Key: HDFS-8823 > URL: https://issues.apache.org/jira/browse/HDFS-8823 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Haohui Mai > Assignee: Haohui Mai > Attachments: HDFS-8823.000.patch, HDFS-8823.001.patch, > HDFS-8823.002.patch, HDFS-8823.003.patch, HDFS-8823.004.patch, > HDFS-8823.005.patch, HDFS-8823.006.patch > > > This jira proposes to record the replication factor in the {{BlockInfo}} > class. The changes have two advantages: > * Decoupling the namespace and the block management layer. It is a > prerequisite step to move block management off the heap or to a separate > process. > * Increased flexibility on replicating blocks. Currently the replication > factors of all blocks have to be the same. The replication factors of these > blocks are equal to the highest replication factor across all snapshots. The > changes will allow blocks in a file to have different replication factor, > potentially saving some space. -- This message was sent by Atlassian JIRA (v6.3.4#6332)