Examples with HddsDatanodeService org.apache.hadoop.ozone.HddsDatanodeService used on opensource projects

Example 41 with HddsDatanodeService

use of org.apache.hadoop.ozone.HddsDatanodeService in project ozone by apache.

the class TestDatanodeHddsVolumeFailureToleration method testDNCorrectlyHandlesVolumeFailureOnStartup.

@Test
public void testDNCorrectlyHandlesVolumeFailureOnStartup() throws Exception {
    HddsDatanodeService dn = datanodes.get(0);
    OzoneContainer oc = dn.getDatanodeStateMachine().getContainer();
    MutableVolumeSet volSet = oc.getVolumeSet();
    StorageVolume vol0 = volSet.getVolumesList().get(0);
    StorageVolume vol1 = volSet.getVolumesList().get(1);
    File volRootDir0 = vol0.getStorageDir();
    File volRootDir1 = vol1.getStorageDir();
    // simulate bad volumes <= tolerated
    DatanodeTestUtils.simulateBadRootDir(volRootDir0);
    // restart datanode to test
    cluster.restartHddsDatanode(0, true);
    // no exception is good
    // fail a second volume
    DatanodeTestUtils.simulateBadRootDir(volRootDir1);
    // restart datanode to test
    try {
        cluster.restartHddsDatanode(0, true);
        Assert.fail();
    } catch (RuntimeException e) {
        Assert.assertTrue(e.getMessage().contains("Can't start the HDDS datanode plugin"));
    }
    // restore bad volumes
    DatanodeTestUtils.restoreBadRootDir(volRootDir0);
    DatanodeTestUtils.restoreBadRootDir(volRootDir1);
}