Alarms¶

This table is created by the Alarm Recorder and uses the trigger time, parameter name and sequence number as primary key:

CREATE TABLE alarms(
    triggerTime TIMESTAMP,
    parameter STRING,
    seqNum INT,
    PRIMARY KEY(
        triggerTime,
        parameter,
        seqNum
    )
) table_format=compressed;

Where the columns are:

• triggerTime

  the time when the alarm has been triggered. Until an alarm is acknowledged, there will not be a new alarm generated for that parameter (even if it were to go back in limits)
• parameter

  the fully qualified name of the parameter for which the alarm has been triggered.
• seqNum

  a sequence number increasing with each new triggered alarm. The sequence number will reset to 0 at Yamcs restart.