本文整理汇总了Java中org.apache.hadoop.hdfs.protocol.datatransfer.ReplaceDatanodeOnFailure.DEFAULT属性的典型用法代码示例。如果您正苦于以下问题：Java ReplaceDatanodeOnFailure.DEFAULT属性的具体用法？Java ReplaceDatanodeOnFailure.DEFAULT怎么用？Java ReplaceDatanodeOnFailure.DEFAULT使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.apache.hadoop.hdfs.protocol.datatransfer.ReplaceDatanodeOnFailure的用法示例。
在下文中一共展示了ReplaceDatanodeOnFailure.DEFAULT属性的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testDefaultPolicy
/** Test DEFAULT ReplaceDatanodeOnFailure policy. */
@Test
public void testDefaultPolicy() throws Exception {
final ReplaceDatanodeOnFailure p = ReplaceDatanodeOnFailure.DEFAULT;
final DatanodeInfo[] infos = new DatanodeInfo[5];
final DatanodeInfo[][] datanodes = new DatanodeInfo[infos.length + 1][];
datanodes[0] = new DatanodeInfo[0];
for(int i = 0; i < infos.length; ) {
infos[i] = DFSTestUtil.getLocalDatanodeInfo(50020 + i);
i++;
datanodes[i] = new DatanodeInfo[i];
System.arraycopy(infos, 0, datanodes[i], 0, datanodes[i].length);
}
final boolean[] isAppend = {true, true, false, false};
final boolean[] isHflushed = {true, false, true, false};
for(short replication = 1; replication <= infos.length; replication++) {
for(int nExistings = 0; nExistings < datanodes.length; nExistings++) {
final DatanodeInfo[] existings = datanodes[nExistings];
Assert.assertEquals(nExistings, existings.length);
for(int i = 0; i < isAppend.length; i++) {
for(int j = 0; j < isHflushed.length; j++) {
final int half = replication/2;
final boolean enoughReplica = replication <= nExistings;
final boolean noReplica = nExistings == 0;
final boolean replicationL3 = replication < 3;
final boolean existingsLEhalf = nExistings <= half;
final boolean isAH = isAppend[i] || isHflushed[j];
final boolean expected;
if (enoughReplica || noReplica || replicationL3) {
expected = false;
} else {
expected = isAH || existingsLEhalf;
}
final boolean computed = p.satisfy(
replication, existings, isAppend[i], isHflushed[j]);
try {
Assert.assertEquals(expected, computed);
} catch(AssertionError e) {
final String s = "replication=" + replication
+ "\nnExistings =" + nExistings
+ "\nisAppend =" + isAppend[i]
+ "\nisHflushed =" + isHflushed[j];
throw new RuntimeException(s, e);
}
}
}
}
}
}
示例2: testDefaultPolicy
/**
* Test DEFAULT ReplaceDatanodeOnFailure policy.
*/
@Test
public void testDefaultPolicy() throws Exception {
final ReplaceDatanodeOnFailure p = ReplaceDatanodeOnFailure.DEFAULT;
final DatanodeInfo[] infos = new DatanodeInfo[5];
final DatanodeInfo[][] datanodes = new DatanodeInfo[infos.length + 1][];
datanodes[0] = new DatanodeInfo[0];
for (int i = 0; i < infos.length; ) {
infos[i] = DFSTestUtil.getLocalDatanodeInfo(50020 + i);
i++;
datanodes[i] = new DatanodeInfo[i];
System.arraycopy(infos, 0, datanodes[i], 0, datanodes[i].length);
}
final boolean[] isAppend = {true, true, false, false};
final boolean[] isHflushed = {true, false, true, false};
for (short replication = 1; replication <= infos.length; replication++) {
for (int nExistings = 0; nExistings < datanodes.length; nExistings++) {
final DatanodeInfo[] existings = datanodes[nExistings];
Assert.assertEquals(nExistings, existings.length);
for (boolean anIsAppend : isAppend) {
for (boolean anIsHflushed : isHflushed) {
final int half = replication / 2;
final boolean enoughReplica = replication <= nExistings;
final boolean noReplica = nExistings == 0;
final boolean replicationL3 = replication < 3;
final boolean existingsLEhalf = nExistings <= half;
final boolean isAH = anIsAppend || anIsHflushed;
final boolean expected;
if (enoughReplica || noReplica || replicationL3) {
expected = false;
} else {
expected = isAH || existingsLEhalf;
}
final boolean computed =
p.satisfy(replication, existings, anIsAppend, anIsHflushed);
try {
Assert.assertEquals(expected, computed);
} catch (AssertionError e) {
final String s =
"replication=" + replication + "\nnExistings =" + nExistings +
"\nisAppend =" + anIsAppend + "\nisHflushed =" +
anIsHflushed;
throw new RuntimeException(s, e);
}
}
}
}
}
}