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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-13539) DFSInputStream NPE when reportCheckSumFailure
Date Tue, 08 May 2018 22:33:01 GMT
Xiao Chen created HDFS-13539:
--------------------------------

             Summary: DFSInputStream NPE when reportCheckSumFailure
                 Key: HDFS-13539
                 URL: https://issues.apache.org/jira/browse/HDFS-13539
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Xiao Chen
            Assignee: Xiao Chen
         Attachments: HDFS-13539.01.patch

We have seem the following exception with DFSStripedInputStream.
{noformat}
readDirect: FSDataInputStream#read error:
NullPointerException: java.lang.NullPointerException
        at org.apache.hadoop.hdfs.DFSStripedInputStream.readWithStrategy(DFSStripedInputStream.java:402)
        at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:831)
        at org.apache.hadoop.fs.FSDataInputStream.read(FSDataInputStream.java:147)
{noformat}
Line 402 is {{reportCheckSumFailure}}, and {{currentLocatedBlock}} is the only possible null
object.

Original exception is masked by the NPE.



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