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Konstantin Shvachko commented on HDFS-7647: ------------------------------------------- Yes, I would go with simple. That is, sort DatanodeIDs, then use the mapping to reorganize storages. The mapping of course could be an index array as Arpit suggested. > DatanodeManager.sortLocatedBlocks() sorts DatanodeIDs but not StorageIDs > ------------------------------------------------------------------------ > > Key: HDFS-7647 > URL: https://issues.apache.org/jira/browse/HDFS-7647 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 2.6.0 > Reporter: Milan Desai > Assignee: Milan Desai > > DatanodeManager.sortLocatedBlocks() sorts the array of DatanodeIDs inside > each LocatedBlock, but does not touch the array of StorageIDs and > StorageTypes. As a result, the DatanodeIDs and StorageIDs/StorageTypes are > mismatched. The method is called by FSNamesystem.getBlockLocations(), so the > client will not know which StorageID/Type corresponds to which DatanodeID. -- This message was sent by Atlassian JIRA (v6.3.4#6332)