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Posted to common-issues@hadoop.apache.org by "Ayappan (JIRA)" <ji...@apache.org> on 2015/01/06 10:11:34 UTC

[jira] [Created] (HADOOP-11462) TestSocketIOTimeout needs change for PowerPC platform

Ayappan created HADOOP-11462:
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             Summary: TestSocketIOTimeout needs change for PowerPC platform
                 Key: HADOOP-11462
                 URL: https://issues.apache.org/jira/browse/HADOOP-11462
             Project: Hadoop Common
          Issue Type: Bug
          Components: test
    Affects Versions: 2.5.2
         Environment: PowerPC
            Reporter: Ayappan


TestSocketIOWithTimeout uses a block size of 4192 bytes to simulate a partial write. This seems to be a valid in x86 architecture where the default minimum blocksize is 4096. 
This testcase fails in PowerPC where the default minimum block size is 65536 bytes (64KB). So for PowerPC, using a blocksize little more than 64K , say 65555(65536 + 19) holds good for this scenario.
I attached a patch here where i made it very general by introducing NativeIO.POSIX.getCacheManipulator().getOperatingSystemPageSize() to get the page size.
I tested my patch in both ppc64 and x86 linux machines.



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