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Back to Filebc.cluster.ondemand.read, or Filebc.cluster.ondemand.read Info


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!!! Clustering Support for ON Demand Read
!!! Clustering Support for "On Demand" Read
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!!! On Demand Read, as read only
!!! "On Demand" Read, as read only
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!!!On Demand read with delete
!!! "On Demand" read with delete
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!!!Archive option
!!! a) Archive option
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!!!Without Archive
!!! b) Without Archive
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!!Note: Filelocks (java.nio.channels.FileLock) are used to synchronize access across nodes in the cluster
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{{{
Platform dependencies
This file-locking API is intended to map directly to the native locking facility of the underlying operating system. Thus the locks held on a file should be visible
to all programs that have access to the file, regardless of the language in which those programs are written.
Whether or not a lock actually prevents another program from accessing the content of the locked region is system-dependent and therefore unspecified.
The native file-locking facilities of some systems are merely advisory, meaning that programs must cooperatively observe a known locking protocol in order to
guarantee data integrity. On other systems native file locks are mandatory, meaning that if one program locks a region of a file then other programs are actually
prevented from accessing that region in a way that would violate the lock. On yet other systems, whether native file locks are advisory or mandatory is
configurable on a per-file basis. To ensure consistent and correct behavior across platforms, it is strongly recommended that the locks provided by this API be
used as if they were advisory locks.
}}}
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This page (revision-8) was last changed on 31-Mar-09 15:07 PM, -0700 by sujit