The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 17, 2018

Filed:

May. 28, 2015
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Sujatha Kashyap, Austin, TX (US);

Lisa B. Maurice, Austin, TX (US);

Joseph H. Robichaux, Round Rock, TX (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01); G06F 11/14 (2006.01); G06F 3/06 (2006.01);
U.S. Cl.
CPC ...
G06F 11/1492 (2013.01); G06F 3/06 (2013.01); G06F 3/065 (2013.01); G06F 3/0605 (2013.01); G06F 3/067 (2013.01); G06F 17/30082 (2013.01); G06F 17/30212 (2013.01);
Abstract

In a distributed file system with a number of replicas of a file set to two or more replicas, a computer sets a timer to track a time since a last access to the file, wherein the replicas of the file are distributed across two or more nodes within the distributed file system. Responsive to an access to the file prior to the timer reaching a first timer window threshold, the computer resets the timer. Responsive to the timer matching a first timer window threshold, the computer automatically reduces a number of replicas of the file within the distributed file system, wherein the probability that the file will be accessed prior to the first timer window threshold is greater than the probability that the file will be accessed after the first timer window threshold.


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