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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4055) TestAuditLogs is flaky
Date Wed, 17 Oct 2012 04:40:03 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins updated HDFS-4055:
------------------------------

    Summary: TestAuditLogs is flaky  (was: TestAuditLogs has some chances to fail.)
    
> TestAuditLogs is flaky
> ----------------------
>
>                 Key: HDFS-4055
>                 URL: https://issues.apache.org/jira/browse/HDFS-4055
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Binglin Chang
>            Assignee: Binglin Chang
>         Attachments: HDFS-4055-TestAuditLogs-bug.patch
>
>
> {code}
>     InputStream istream = webfs.open(file);
>     int val = istream.read();
>     istream.close();
>     verifyAuditLogsRepeat(true, 3);
>     assertTrue("failed to read from file", val >= 0);
> {code}
> {code}
>     byte[] toWrite = new byte[bufferLen];
>     Random rb = new Random(seed);
>     long bytesToWrite = fileLen;
>     while (bytesToWrite>0) {
>       rb.nextBytes(toWrite);
> {code}
> InputStream.read() return the first byte of the file, the bytes in the file is generated
in using Random.nextBytes(), so you get 1/256 chance the first byte is 0, so some times it
may fail.

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