[jira] [Created] (HDFS-5884) LoadDelegator should use IOUtils.readFully() to read the magic header

[Haohui Mai (JIRA)]

Haohui Mai created HDFS-5884:
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             Summary: LoadDelegator should use IOUtils.readFully() to read the 
magic header
                 Key: HDFS-5884
                 URL: https://issues.apache.org/jira/browse/HDFS-5884
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Haohui Mai
            Assignee: Haohui Mai


Currently FSImageFormat.LoadDelegator reads the magic header using 
{FileInputStream.read()}. It does not guarantee that the magic header is fully 
read. It should use IOUtils.readFully() instead.



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