Patents by Inventor Anjan Kumar Amirishetty

Anjan Kumar Amirishetty has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190012244
    Abstract: Techniques are described herein for quick identification of a set of units of data for which recovery operations are to be performed to redo or undo changes made by the failed node. When a lock is requested by an instance, lock information for the lock request is replicated by another instance. If the instance fails, the other instance may use the replicated lock information to determine a set of data blocks for recovery operations. The set of data blocks is available in memory of a recovery instance when a given node fails, and does not have to be completely generated by scanning a redo log.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 10, 2019
    Inventors: Anjan Kumar Amirishetty, Yunrui Li, Tolga Yurek, Wilson Wai Shun Chan
  • Publication number: 20180300204
    Abstract: Techniques related to instance recovery using Bloom filters are disclosed. A multi-node node database management system (DBMS) includes a first database server instance and a second database server instance. A recovery set includes a set of data blocks that have been modified by a first database server instance and not persisted. A Bloom filter is generated to indicate whether data blocks are excluded from the recovery set. The Bloom filter is sent to the second database server instance, which determines whether the Bloom filter indicates that a particular data block is excluded from the recovery set. Based on determining that the Bloom filter indicates that the particular data block is excluded from the recovery set, access to the particular data block is granted.
    Type: Application
    Filed: April 17, 2017
    Publication date: October 18, 2018
    Inventors: Anjan Kumar Amirishetty, Yunrui Li, Tolga Yurek, Wilson Wai Shun Chan