Data processing apparatus, method and computer program with optimized key-pointing operation for log record storage
AssigneeInternational Business Machines Corporation
InventorsJohn Anthony Beaven, Amanda Elizabeth Chessell, Martin Mulholland, David John Vines
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Abstract
A data processing apparatus has a direct access non-volatile memory storage device having a plurality of extent files for storing log records therein; an allocating unit for allocating a current extent file to be used for storing log records; a writing unit for writing log records into the current extent file until the current extent file cannot store any further log records; and a key-pointing unit for performing a key-pointing operation on the written log records when the writing unit has reached the point where no further log records can be stored in the current extent file.
Claims9
A data processing apparatus comprising:
- a direct access non-volatile memory storage device having a plurality of extent files for storing log records therein;
- allocating means for allocating a current extent file to be used for storing log records;
- writing means for writing log records into the current extent file until the current extent file cannot store any further log records;
- and
- key-pointing means for performing a key-pointing operation on the written log records when the writing means has reached the point where no further log records can be stored in the current extent file.
A computer program product stored on a computer-readable storage medium for running on a data processing system, the data processing system having a direct access non-volatile memory storage device having a plurality of extent files for storing log records therein, the program product for carrying out the following steps when run on the data processing system:
- allocating a current extent file to be used for storing log records;
- writing log records into the current extent file until the current extent file cannot store any further log records;
- and
- performing a key-pointing operation on the written log records when the writing means has reached the point where no further log records can be stored in the current extent file.
A data processing method being carried out on a data processing system, the data processing system having a direct access non-volatile memory storage device having a plurality of extent files for storing log records therein, the method having steps of:
- allocating a current extent file to be used for storing log records;
- writing log records into the current extent file until the current extent file cannot store any further log records;
- and
- performing a key-pointing operation on the written log records when the writing means has reached the point where no further log records can be stored in the current extent file.
Dependencies are inferred from the claim text.