[HDFS-8975] Erasure coding : Fix random failure in TestSafeModeWithStripedFile

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: HDFS-7285
• Hadoop Flags: Reviewed
• Assignee: J.Andreina
• Reporter: J.Andreina
• Created: 27/Aug/15 08:59
• Updated: 30/Sep/15 19:38
• Resolved: 12/Sep/15 08:01

Description

TestSafeModeWithStripedFile#testStripedFile0 fails randomly because:

In below code they are restarting DN and even before DN registration happens to NN, block report is triggered and following operation fails

i) Safemode safe block is counted (which is coming as 0 randomly , eventhough one block is safe )
ii) Check for NN in safemode.

      cluster.restartDataNode(dnprops.remove(0));
      cluster.triggerBlockReports();
      assertEquals(1, NameNodeAdapter.getSafeModeSafeBlocks(nn));

     dnProperty = dnprops.remove(0);
    restartDN(dnProperty,nameNodeAddress);
    assertFalse(nn.isInSafeMode());