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https://issues.apache.org/jira/browse/HDFS-5574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14516940#comment-14516940
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Binglin Chang commented on HDFS-5574:
-------------------------------------
Strange, the test error is caused by NoSuchMethodError, which should not happen
if code is compiled successfully, is there any bug in test-patch process?
{code}
java.lang.NoSuchMethodError:
org.apache.hadoop.fs.FSInputChecker.readAndDiscard(I)I
at
org.apache.hadoop.hdfs.RemoteBlockReader.read(RemoteBlockReader.java:128)
at
org.apache.hadoop.hdfs.DFSInputStream$ByteArrayStrategy.doRead(DFSInputStream.java:740)
at
org.apache.hadoop.hdfs.DFSInputStream.readBuffer(DFSInputStream.java:796)
at
org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:856)
at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:899)
at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:700)
at
org.apache.hadoop.hdfs.TestDFSInputStream.testSkipInner(TestDFSInputStream.java:61)
at
org.apache.hadoop.hdfs.TestDFSInputStream.testSkipWithRemoteBlockReader(TestDFSInputStream.java:76)
{code}
> Remove buffer copy in BlockReader.skip
> --------------------------------------
>
> Key: HDFS-5574
> URL: https://issues.apache.org/jira/browse/HDFS-5574
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Binglin Chang
> Assignee: Binglin Chang
> Priority: Trivial
> Attachments: HDFS-5574.006.patch, HDFS-5574.007.patch,
> HDFS-5574.008.patch, HDFS-5574.v1.patch, HDFS-5574.v2.patch,
> HDFS-5574.v3.patch, HDFS-5574.v4.patch, HDFS-5574.v5.patch
>
>
> BlockReaderLocal.skip and RemoteBlockReader.skip uses a temp buffer to read
> data to this buffer, it is not necessary.
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