[HDFS-4055] TestAuditLogs is flaky

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.3-alpha
• Hadoop Flags: Reviewed
• Assignee: Binglin Chang
• Reporter: Binglin Chang
• Created: 15/Oct/12 20:32
• Updated: 15/Feb/13 13:11
• Resolved: 17/Oct/12 04:40

Description

    InputStream istream = webfs.open(file);
    int val = istream.read();
    istream.close();

    verifyAuditLogsRepeat(true, 3);
    assertTrue("failed to read from file", val >= 0);

    byte[] toWrite = new byte[bufferLen];
    Random rb = new Random(seed);
    long bytesToWrite = fileLen;
    while (bytesToWrite>0) {
      rb.nextBytes(toWrite);

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.

Issue Links

• duplicates: HDFS-3984 TestAuditLogs#testAuditWebHdfs flaky