This method enables the workaround for unmapping the buffers from address space after closing {@link IndexInput}, that is mentioned in the bug report. This hack may fail on non-Sun JVMs. It forcefully unmaps the buffer on close by using an undocumented internal cleanup functionality.

NOTE: Enabling this is completely unsupported by Java and may lead to JVM crashs if

is closed while another thread is still accessing it (SIGSEGV).

is

CopyC#

false

and the workaround cannot be enabled.

public virtual void SetUseUnmap(
	bool useUnmapHack
)

Public Overridable Sub SetUseUnmap ( _
	useUnmapHack As Boolean _
)

public:
virtual void SetUseUnmap(
	bool useUnmapHack
)