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From "Binglin Chang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4055) TestAuditLogs has some chances to fail.
Date Mon, 15 Oct 2012 20:33:04 GMT
Binglin Chang created HDFS-4055:
-----------------------------------

             Summary: TestAuditLogs has some chances to fail.
                 Key: HDFS-4055
                 URL: https://issues.apache.org/jira/browse/HDFS-4055
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Binglin Chang


{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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