Jacques Nadeau created ARROW-7495:
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Summary: [Java] Remove "empty" concept from ArrowBuf, replace with
custom referencemanager
Key: ARROW-7495
URL: https://issues.apache.org/jira/browse/ARROW-7495
Project: Apache Arrow
Issue Type: Task
Reporter: Jacques Nadeau
With the introduction of ReferenceManager in the codebase, the need for a
separate ArrowBuf is no longer necessary. Instead, once can create a new
reference manager that is used for the empty ArrowBuf. For reminder/review,
empty arrowbufs have a special behavior in that they don't actually have any
reference counting semantics and always stay at one. This allow us to better
troubleshoot unallocated memory than what would otherwise be an NPE after
calling ValueVector.clear()
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