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https://issues.apache.org/jira/browse/HDFS-13539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Chen updated HDFS-13539:
-----------------------------
Description:
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. (Because {{currentLocatedBlock.getLocations()}} cannot be
null - {{LocatedBlock}} constructor checks {{locs}} and would assign a
{{EMPTY_LOCS}} if it's null)
Original exception is masked by the NPE.
was:
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.
> 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
> Priority: Major
> 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. (Because {{currentLocatedBlock.getLocations()}}
> cannot be null - {{LocatedBlock}} constructor checks {{locs}} and would
> assign a {{EMPTY_LOCS}} if it's null)
> Original exception is masked by the NPE.
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