openinx commented on a change in pull request #268: HBASE-22491 Separate the
heap HFileBlock and offheap HFileBlock because the heap block won't need refCnt
and save into prevBlocks list before shipping
URL: https://github.com/apache/hbase/pull/268#discussion_r289338766
##########
File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
##########
@@ -763,7 +738,7 @@ public long heapSize() {
/**
* @return true to indicate the block is allocated from JVM heap, otherwise
from off-heap.
*/
- boolean isOnHeap() {
+ public boolean isOnHeap() {
return buf.hasArray();
Review comment:
Thought about this before, our ByteBuffAllocator won't allocate pooled heap
BB , also if allocate a offheap BB, then it must be a pooled one. That's to
say, heapBB = exclusiveBB, offheapBB = sharedBB. So if it's a heapBB, then
must be a exclusiveBB..
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