Examples with FSNamesystem org.apache.hadoop.hdfs.server.namenode.FSNamesystem used on opensource projects

Example 76 with FSNamesystem

use of org.apache.hadoop.hdfs.server.namenode.FSNamesystem in project hadoop by apache.

the class TestHASafeMode method testEnterSafeModeInSBNShouldNotThrowNPE.

/**
   * Test case for enter safemode in standby namenode, when it is already in startup safemode.
   * It is a regression test for HDFS-2747.
   */
@Test
public void testEnterSafeModeInSBNShouldNotThrowNPE() throws Exception {
    banner("Starting with NN0 active and NN1 standby, creating some blocks");
    DFSTestUtil.createFile(fs, new Path("/test"), 3 * BLOCK_SIZE, (short) 3, 1L);
    // Roll edit log so that, when the SBN restarts, it will load
    // the namespace during startup and enter safemode.
    nn0.getRpcServer().rollEditLog();
    banner("Creating some blocks that won't be in the edit log");
    DFSTestUtil.createFile(fs, new Path("/test2"), 5 * BLOCK_SIZE, (short) 3, 1L);
    banner("Deleting the original blocks");
    fs.delete(new Path("/test"), true);
    banner("Restarting standby");
    restartStandby();
    FSNamesystem namesystem = nn1.getNamesystem();
    String status = namesystem.getSafemode();
    assertTrue("Bad safemode status: '" + status + "'", status.startsWith("Safe mode is ON."));
    NameNodeAdapter.enterSafeMode(nn1, false);
    assertTrue("Failed to enter into safemode in standby", namesystem.isInSafeMode());
    NameNodeAdapter.enterSafeMode(nn1, false);
    assertTrue("Failed to enter into safemode in standby", namesystem.isInSafeMode());
}

Example 77 with FSNamesystem

use of org.apache.hadoop.hdfs.server.namenode.FSNamesystem in project hadoop by apache.

the class TestHASafeMode method testEnterSafeModeInANNShouldNotThrowNPE.

/**
   * Test case for enter safemode in active namenode, when it is already in startup safemode.
   * It is a regression test for HDFS-2747.
   */
@Test
public void testEnterSafeModeInANNShouldNotThrowNPE() throws Exception {
    banner("Restarting active");
    DFSTestUtil.createFile(fs, new Path("/test"), 3 * BLOCK_SIZE, (short) 3, 1L);
    restartActive();
    nn0.getRpcServer().transitionToActive(new StateChangeRequestInfo(RequestSource.REQUEST_BY_USER));
    FSNamesystem namesystem = nn0.getNamesystem();
    String status = namesystem.getSafemode();
    assertTrue("Bad safemode status: '" + status + "'", status.startsWith("Safe mode is ON."));
    NameNodeAdapter.enterSafeMode(nn0, false);
    assertTrue("Failed to enter into safemode in active", namesystem.isInSafeMode());
    NameNodeAdapter.enterSafeMode(nn0, false);
    assertTrue("Failed to enter into safemode in active", namesystem.isInSafeMode());
}