Race condition in Slab.java that occurs due to spinlock unlocking early.
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Key: HBASE-4278
URL: https://issues.apache.org/jira/browse/HBASE-4278
Project: HBase
Issue Type: Sub-task
Reporter: Li Pi
Assignee: Li Pi
Just a race condition in 4027. Occurs due to a spinlock that happens if the
slab allocator is empty. When the slab allocator gets gets a slice of memory
returned, if multiple threads are locked, both can be freed at the same time,
leading one to throw an exception.
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