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HDFS-12460. Make addErasureCodingPolicy an idempotent operation. Contributed by Sammi Chen

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This commit is contained in:
Kai Zheng 2017-09-18 18:07:12 +08:00
parent e81596d06d
commit 0f9af246e8
4 changed files with 9 additions and 8 deletions
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7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ErasureCodingPolicyManager.java
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@ -242,14 +242,15 @@ public synchronized ErasureCodingPolicy addPolicy(
policy.getSchema(), policy.getCellSize());
for (ErasureCodingPolicy p : getPolicies()) {
if (p.getName().equals(assignedNewName)) {
throw new HadoopIllegalArgumentException("The policy name " +
assignedNewName + " already exists");
LOG.info("The policy name " + assignedNewName + " already exists");
return p;
}
if (p.getSchema().equals(policy.getSchema()) &&
p.getCellSize() == policy.getCellSize()) {
throw new HadoopIllegalArgumentException("A policy with same schema "
LOG.info("A policy with same schema "
+ policy.getSchema().toString() + " and cell size "
+ p.getCellSize() + " already exists");
return p;
}
}
policy.setName(assignedNewName);

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestErasureCodingPolicies.java
View File

@ -718,7 +718,7 @@ public void testAddErasureCodingPolicies() throws Exception {
policyArray = new ErasureCodingPolicy[]{policy0};
responses = fs.addErasureCodingPolicies(policyArray);
assertEquals(1, responses.length);
assertFalse(responses[0].isSucceed());
assertTrue(responses[0].isSucceed());
// Test add policy successfully
newPolicy =

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNamenodeRetryCache.java
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@ -436,7 +436,7 @@ public void testRetryCacheRebuild() throws Exception {
LightWeightCache<CacheEntry, CacheEntry> cacheSet =
(LightWeightCache<CacheEntry, CacheEntry>) namesystem.getRetryCache().getCacheSet();
assertEquals("Retry cache size is wrong", 26, cacheSet.size());
assertEquals("Retry cache size is wrong", 34, cacheSet.size());
Map<CacheEntry, CacheEntry> oldEntries =
new HashMap<CacheEntry, CacheEntry>();
@ -455,7 +455,7 @@ public void testRetryCacheRebuild() throws Exception {
assertTrue(namesystem.hasRetryCache());
cacheSet = (LightWeightCache<CacheEntry, CacheEntry>) namesystem
.getRetryCache().getCacheSet();
assertEquals("Retry cache size is wrong", 26, cacheSet.size());
assertEquals("Retry cache size is wrong", 34, cacheSet.size());
iter = cacheSet.iterator();
while (iter.hasNext()) {
CacheEntry entry = iter.next();

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestRetryCacheWithHA.java
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@ -166,7 +166,7 @@ public void testRetryCacheOnStandbyNN() throws Exception {
FSNamesystem fsn0 = cluster.getNamesystem(0);
LightWeightCache<CacheEntry, CacheEntry> cacheSet =
(LightWeightCache<CacheEntry, CacheEntry>) fsn0.getRetryCache().getCacheSet();
assertEquals("Retry cache size is wrong", 26, cacheSet.size());
assertEquals("Retry cache size is wrong", 34, cacheSet.size());
Map<CacheEntry, CacheEntry> oldEntries =
new HashMap<CacheEntry, CacheEntry>();
@ -187,7 +187,7 @@ public void testRetryCacheOnStandbyNN() throws Exception {
FSNamesystem fsn1 = cluster.getNamesystem(1);
cacheSet = (LightWeightCache<CacheEntry, CacheEntry>) fsn1
.getRetryCache().getCacheSet();
assertEquals("Retry cache size is wrong", 26, cacheSet.size());
assertEquals("Retry cache size is wrong", 34, cacheSet.size());
iter = cacheSet.iterator();
while (iter.hasNext()) {
CacheEntry entry = iter.next();