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HBASE-28211 BucketCache.blocksByHFile may leak on allocationFailure or if we reach io errors tolerated #5530

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Merged
merged 1 commit into from
Nov 29, 2023
Merged

HBASE-28211 BucketCache.blocksByHFile may leak on allocationFailure or if we reach io errors tolerated #5530

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12 changes: 6 additions & 6 deletions hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
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Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,7 @@ public class BucketCache implements BlockCache, HeapSize {
*/
transient final IdReadWriteLock<Long> offsetLock;

private final NavigableSet<BlockCacheKey> blocksByHFile = new ConcurrentSkipListSet<>((a, b) -> {
final NavigableSet<BlockCacheKey> blocksByHFile = new ConcurrentSkipListSet<>((a, b) -> {
int nameComparison = a.getHfileName().compareTo(b.getHfileName());
if (nameComparison != 0) {
return nameComparison;
Expand Down Expand Up @@ -643,12 +643,14 @@ void blockEvicted(BlockCacheKey cacheKey, BucketEntry bucketEntry, boolean decre
blocksByHFile.remove(cacheKey);
if (decrementBlockNumber) {
this.blockNumber.decrement();
if (ioEngine.isPersistent()) {
removeFileFromPrefetch(cacheKey.getHfileName());
}
}
if (evictedByEvictionProcess) {
cacheStats.evicted(bucketEntry.getCachedTime(), cacheKey.isPrimary());
}
if (ioEngine.isPersistent()) {
removeFileFromPrefetch(cacheKey.getHfileName());
setCacheInconsistent(true);
}
}
Expand Down Expand Up @@ -1083,6 +1085,7 @@ public void run() {
*/
protected void putIntoBackingMap(BlockCacheKey key, BucketEntry bucketEntry) {
BucketEntry previousEntry = backingMap.put(key, bucketEntry);
blocksByHFile.add(key);
if (previousEntry != null && previousEntry != bucketEntry) {
previousEntry.withWriteLock(offsetLock, () -> {
blockEvicted(key, previousEntry, false, false);
Expand Down Expand Up @@ -1163,10 +1166,6 @@ void doDrain(final List<RAMQueueEntry> entries, ByteBuffer metaBuff) throws Inte
index++;
continue;
}
BlockCacheKey cacheKey = re.getKey();
if (ramCache.containsKey(cacheKey)) {
blocksByHFile.add(cacheKey);
}
// Reset the position for reuse.
// It should be guaranteed that the data in the metaBuff has been transferred to the
// ioEngine safely. Otherwise, this reuse is problematic. Fortunately, the data is already
Expand Down Expand Up @@ -1517,6 +1516,7 @@ private void disableCache() {
if (!ioEngine.isPersistent() || persistencePath == null) {
// If persistent ioengine and a path, we will serialize out the backingMap.
this.backingMap.clear();
this.blocksByHFile.clear();
this.fullyCachedFiles.clear();
this.regionCachedSizeMap.clear();
}
Expand Down
4 changes: 4 additions & 0 deletions ...-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestBucketWriterThread.java
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Expand Up @@ -122,6 +122,8 @@ public void testTooBigEntry() throws InterruptedException {
Mockito.when(tooBigCacheable.getSerializedLength()).thenReturn(Integer.MAX_VALUE);
this.bc.cacheBlock(this.plainKey, tooBigCacheable);
doDrainOfOneEntry(this.bc, this.wt, this.q);
assertTrue(bc.blocksByHFile.isEmpty());
assertTrue(bc.getBackingMap().isEmpty());
}

/**
Expand All @@ -138,6 +140,8 @@ public void testIOE() throws IOException, InterruptedException {
Mockito.any(), Mockito.any(), Mockito.any(), Mockito.any());
this.q.add(spiedRqe);
doDrainOfOneEntry(bc, wt, q);
assertTrue(bc.blocksByHFile.isEmpty());
assertTrue(bc.getBackingMap().isEmpty());
// Cache disabled when ioes w/o ever healing.
assertTrue(!bc.isCacheEnabled());
}
Expand Down