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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8619) Erasure Coding: revisit replica counting for striped blocks
Date Thu, 18 Jun 2015 00:23:02 GMT
Jing Zhao created HDFS-8619:
-------------------------------

             Summary: Erasure Coding: revisit replica counting for striped blocks
                 Key: HDFS-8619
                 URL: https://issues.apache.org/jira/browse/HDFS-8619
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Jing Zhao
            Assignee: Jing Zhao


Currently we use the same {{BlockManager#countNodes}} method for striped blocks, which simply
treat each internal block as a replica. However, for a striped block, we may have more complicated
scenario, e.g., we have multiple replicas of the first internal block while we miss some other
internal blocks. Using the current {{countNodes}} methods can lead to wrong decision in these
scenarios.



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