Lookup Manager statistics

For each externally triggered action, the Lookup Manager application writes one or more log entries that include statistics and debug information. These entries are written to a new file every day, and each entry is a text line in the file. The format of the log file is identical to the txt format of the spl.adapter::FileSink operator and contains the following attributes:

  • filename

    The name of the processed file.

  • command

    The external command (init, update, and delete) or internal event names and their results, for example, SUCCESS request:submit.

  • commandStartedAt

    The beginning of the command processing.

  • commandProcessedAt

    The ending of the command processing

  • hostStatistics

    List of strings, where each string provides information on the resource usage for a host in the following format:

    <hostname> segments:{<comma-separated list of segment-info entries>}

    with a segment-info format of:

    [sgmnt:segment<segment name>- repository:<table name>- reserved:<reserved bytes>- free:<free bytes>-free %:<percentage of free bytes>- processed:<number of processed data tuples]

  • logFileDate

    The date of the log entry.

Observing the percentage of free bytes value for each segment is important to identify early a memory bottleneck. Typically, a value less than 30% should be observed carefully and discussed with the development team to identify countermeasures. A value less than 10% is typically a critical value that requires your and the development team's immediate attention to increase the reserved memory and to identify the reason for the low value.