Managing data objects

A system, comprising:

• one or more processors;
• and
• a computer-readable storage medium comprising logic instructions which, when executed by the one or more processors, configure the one or more processors to perform operations comprising:
• detecting, in a storage manager of a node of the distributed computer system, an input/output (I/O) request comprising a received object signature that uniquely identifies a data object stored in an object container of the distributed computer system;
• generating, from a first portion of the received object signature, a first mapping to a bucket in an on-disk cache table, the bucket comprising a predetermined number of slots in the on-disk cache table;
• generating, from a second portion of the received object signature, a second mapping to a starting slot of the bucket;
• and
• selectively managing the input/output (I/O) operation based upon an object signature value associated with the starting slot of the bucket.

A processor-based method to implement recovery operations for a read cache in a distributed computer system, the method comprising:

• reading a data object from an on-disk object location;
• generating an object signature that uniquely identifies the data object;
• generating, from a first portion of the received object signature, a first mapping to a bucket in an on-disk cache table, the bucket comprising a predetermined number of slots in the on-disk cache table;
• generating, from a second portion of the received object signature, a second mapping to a starting slot of the bucket;
• and
• comparing the starting slot position with the on-disk object location to determine whether the data object is a valid object.

A system, comprising:

• one or more processors;
• and
• a computer-readable storage medium comprising logic instructions which, when executed by the one or more processors, configure the one or more processors to perform operations comprising:
• reading a data object from an on-disk object location;
• generating an object signature that uniquely identifies the data object;
• generating, from a first portion of the received object signature, a first mapping to a bucket in an on-disk cache table, the bucket comprising a predetermined number of slots in the on-disk cache table;
• generating, from a second portion of the received object signature, a second mapping to a starting slot of the bucket;
• and
• comparing the starting slot position with the on-disk object location to determine whether the data object is a valid object.