chenxu14 commented on a change in pull request #479: HBASE-22802 Avoid temp
ByteBuffer allocation in FileIOEngine#read
URL: https://github.com/apache/hbase/pull/479#discussion_r313478218
##########
File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
##########
@@ -689,7 +691,7 @@ private void freeEntireBuckets(int
completelyFreeBucketsNeeded) {
// this set is small around O(Handler Count) unless something else is
wrong
Set<Integer> inUseBuckets = new HashSet<>();
backingMap.forEach((k, be) -> {
- if (be.isRpcRef()) {
+ if (ioEngine.usesSharedMemory() && be.isRpcRef()) {
Review comment:
make sense
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