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Posted to hdfs-dev@hadoop.apache.org by "dragon (JIRA)" <ji...@apache.org> on 2016/03/15 09:14:34 UTC

[jira] [Created] (HDFS-9976) CLONE - Erasure Coding: consolidate streamer coordination logic and handle failure when writing striped blocks

dragon created HDFS-9976:
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             Summary: CLONE - Erasure Coding: consolidate streamer coordination logic and handle failure when writing striped blocks
                 Key: HDFS-9976
                 URL: https://issues.apache.org/jira/browse/HDFS-9976
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: hdfs-client
            Reporter: dragon
            Assignee: Tsz Wo Nicholas Sze
             Fix For: HDFS-7285


In *stripping* case, for (6, 3)-Reed-Solomon, a client writes to 6 data blocks and 3 parity blocks concurrently.  We need to handle datanode or network failures when writing a EC BlockGroup.

We also refactor the existing code in DFSStripedOutputStream and StripedDataStreamer.



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