Hello,
I wish to disable checksum calculation & verification in Hadoop's framework,
I run the TestDfsIO application with the parameter dfs.checksum.type=NULL,
To my best understanding, this was supposed to turnoff check summing in the
framework,
But I received the following error -
...
...
...
14/04/28 14:54:26.433 INFO hdfs.DFSOutputStream (1349) 96232.106,
96232.10464359 : Vanilla DFSOutputStream constructed successfully.
java.lang.ArrayIndexOutOfBoundsException: 0
at org.apache.hadoop.fs.FSOutputSummer.int2byte(FSOutputSummer.java:184)
at
org.apache.hadoop.fs.FSOutputSummer.writeChecksumChunk(FSOutputSummer.java:172)
at
org.apache.hadoop.fs.FSOutputSummer.flushBuffer(FSOutputSummer.java:148)
at
org.apache.hadoop.fs.FSOutputSummer.flushBuffer(FSOutputSummer.java:137)
at
org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:1810)
at
org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:66)
at
org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:99)
at
org.apache.hadoop.io.SequenceFile$Writer.close(SequenceFile.java:1240)
at org.apache.hadoop.fs.TestDFSIO.createControlFile(TestDFSIO.java:304)
at org.apache.hadoop.fs.TestDFSIO.run(TestDFSIO.java:750)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
at org.apache.hadoop.fs.TestDFSIO.main(TestDFSIO.java:649)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:72)
at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:144)
at
org.apache.hadoop.test.MapredTestDriver.run(MapredTestDriver.java:115)
at
org.apache.hadoop.test.MapredTestDriver.main(MapredTestDriver.java:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
14/04/28 14:54:26.581 INFO fs.FileSystem (585) 96232.249, 0.585955522 :
Vanilla distributeFileSystem was closed.
Is seems that the framework does not support disabling the checksum by the
above flag,
Does anybody knows why I get this error?
Is there another way to disable checksum?
Thanks
Amir
