Zheng Hu created HBASE-21957:
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Summary: Unify refCount of BucketEntry and refCount of
hbase.nio.ByteBuff into one
Key: HBASE-21957
URL: https://issues.apache.org/jira/browse/HBASE-21957
Project: HBase
Issue Type: Sub-task
Reporter: Zheng Hu
Assignee: Zheng Hu
After HBASE-12295, we have block with MemoryType.SHARED or
MemoryType.EXCLUSIVE, the block in offheap BucketCache will be shared, and have
an reference count to track its life cycle. If no rpc reference to the shared
block, then the block can be evicted.
while after the HBASE-21916, we introduced an refcount for ByteBuff, then I
think we can unify the two into one. tried to fix this when preparing patch
for HBASE-21879, but seems can be different sub-task, and it won't affect the
main logic of HBASE-21879, so create a seperate one.
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