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Konstantin Boudnik commented on HADOOP-7045: -------------------------------------------- +1 patch looks good! > TestDU fails on systems with local file systems with extended attributes > ------------------------------------------------------------------------ > > Key: HADOOP-7045 > URL: https://issues.apache.org/jira/browse/HADOOP-7045 > Project: Hadoop Common > Issue Type: Bug > Components: fs > Reporter: Eli Collins > Assignee: Eli Collins > Priority: Minor > Fix For: 0.23.0 > > Attachments: hadoop-7045-1.patch > > > The test reports that the file takes an extra 4k on disk: > {noformat} > Testcase: testDU took 5.74 sec > FAILED > expected:<32768> but was:<36864> > junit.framework.AssertionFailedError: expected:<32768> but was:<36864> > at org.apache.hadoop.fs.TestDU.testDU(TestDU.java:79) > {noformat} > This is because du reports 32k for the file and 4k because the file system it > lives on uses extended attributes. > {noformat} > common-branch-0.20 $ dd if=/dev/zero of=data bs=4096 count=8 > 8+0 records in > 8+0 records out > 32768 bytes (33 kB) copied, 9.6e-05 seconds, 341 MB/s > common-branch-0.20 $ du data > 36 data > common-branch-0.20 $ du --apparent-size data > 32 data > {noformat} > We should modify the test to allow for some extra on-disk slack. The on-disk > usage could also be smaller if the file data is all zeros or compression is > enabled. The test currently handles the former by writing random data, we're > punting on the latter. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.