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HDFS-5405. Fix possible RetryCache hang for caching RPC handlers in FSNamesystem. (Contributed by Andrew Wang)

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1535282 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew Wang 2013-10-24 05:40:28 +00:00
parent 4004a42d53
commit 222dbfe2ce
2 changed files with 13 additions and 10 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-4949.txt
View File

@ -118,3 +118,6 @@ HDFS-4949 (Unreleased)
HDFS-5404. Resolve regressions in Windows compatibility on HDFS-4949
branch. (Chris Nauroth via Andrew Wang)
HDFS-5405. Fix possible RetryCache hang for caching RPC handlers in
FSNamesystem. (wang)

20
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
View File

@ -6922,16 +6922,16 @@ void removeSnapshottableDirs(List<INodeDirectorySnapshottable> toRemove) {
PathBasedCacheDescriptor addPathBasedCacheDirective(
PathBasedCacheDirective directive) throws IOException {
checkOperation(OperationCategory.WRITE);
final FSPermissionChecker pc = isPermissionEnabled ?
getPermissionChecker() : null;
CacheEntryWithPayload cacheEntry =
RetryCache.waitForCompletion(retryCache, null);
if (cacheEntry != null && cacheEntry.isSuccess()) {
return (PathBasedCacheDescriptor) cacheEntry.getPayload();
}
final FSPermissionChecker pc = isPermissionEnabled ?
getPermissionChecker() : null;
boolean success = false;
PathBasedCacheDescriptor result = null;
checkOperation(OperationCategory.WRITE);
writeLock();
try {
checkOperation(OperationCategory.WRITE);
@ -6957,14 +6957,14 @@ PathBasedCacheDescriptor addPathBasedCacheDirective(
}
void removePathBasedCacheDescriptor(Long id) throws IOException {
checkOperation(OperationCategory.WRITE);
final FSPermissionChecker pc = isPermissionEnabled ?
getPermissionChecker() : null;
CacheEntry cacheEntry = RetryCache.waitForCompletion(retryCache);
if (cacheEntry != null && cacheEntry.isSuccess()) {
return;
}
final FSPermissionChecker pc = isPermissionEnabled ?
getPermissionChecker() : null;
boolean success = false;
checkOperation(OperationCategory.WRITE);
writeLock();
try {
checkOperation(OperationCategory.WRITE);
@ -6988,10 +6988,10 @@ void removePathBasedCacheDescriptor(Long id) throws IOException {
BatchedListEntries<PathBasedCacheDescriptor> listPathBasedCacheDescriptors(
long startId, String pool, String path) throws IOException {
checkOperation(OperationCategory.READ);
final FSPermissionChecker pc = isPermissionEnabled ?
getPermissionChecker() : null;
BatchedListEntries<PathBasedCacheDescriptor> results;
checkOperation(OperationCategory.READ);
readLock();
boolean success = false;
try {
@ -7010,13 +7010,13 @@ BatchedListEntries<PathBasedCacheDescriptor> listPathBasedCacheDescriptors(
}
public void addCachePool(CachePoolInfo req) throws IOException {
checkOperation(OperationCategory.WRITE);
final FSPermissionChecker pc = isPermissionEnabled ?
getPermissionChecker() : null;
CacheEntry cacheEntry = RetryCache.waitForCompletion(retryCache);
if (cacheEntry != null && cacheEntry.isSuccess()) {
return; // Return previous response
}
checkOperation(OperationCategory.WRITE);
writeLock();
boolean success = false;
try {
@ -7043,13 +7043,13 @@ public void addCachePool(CachePoolInfo req) throws IOException {
}
public void modifyCachePool(CachePoolInfo req) throws IOException {
checkOperation(OperationCategory.WRITE);
final FSPermissionChecker pc =
isPermissionEnabled ? getPermissionChecker() : null;
CacheEntry cacheEntry = RetryCache.waitForCompletion(retryCache);
if (cacheEntry != null && cacheEntry.isSuccess()) {
return; // Return previous response
}
checkOperation(OperationCategory.WRITE);
writeLock();
boolean success = false;
try {
@ -7076,13 +7076,13 @@ public void modifyCachePool(CachePoolInfo req) throws IOException {
}
public void removeCachePool(String cachePoolName) throws IOException {
checkOperation(OperationCategory.WRITE);
final FSPermissionChecker pc =
isPermissionEnabled ? getPermissionChecker() : null;
CacheEntry cacheEntry = RetryCache.waitForCompletion(retryCache);
if (cacheEntry != null && cacheEntry.isSuccess()) {
return; // Return previous response
}
checkOperation(OperationCategory.WRITE);
writeLock();
boolean success = false;
try {