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Li Bo commented on HDFS-9040: ----------------------------- Implementing a block group writer is a better solution but you have to copy a lot of existing code to the new class, which may be hard to be accepted by community. At beginning I also tried this way but gave up after discussion. Current design and implementation give as few changes as possible to the existing code. > Erasure coding: A BlockGroupDataStreamer to rule all internal blocks streamers > ------------------------------------------------------------------------------ > > Key: HDFS-9040 > URL: https://issues.apache.org/jira/browse/HDFS-9040 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Walter Su > Assignee: Walter Su > > A {{BlockGroupDataStreamer}} to communicate with NN to allocate/update block, > and {{StripedDataStreamer}} s only have to stream blocks to DNs. -- This message was sent by Atlassian JIRA (v6.3.4#6332)