Specify each parameter in the following format:

parameter-name=value

• The value cannot be followed by spaces or a character string (such as a comment).
  Anything that follows the value will be considered part of the value.
  
• A line containing only a parameter name and no value will be ignored.

You can specify any file name. This file name must be specified in the stream.propertyFiles parameter in the applicable query group property file.

This file must be stored in the following directory:

working-directory\conf\

This file specifies tuning parameters for a stream in a query group. You create this file for a stream only if you want to specify tuning parameters specifically for the stream.

The table below lists and describes the parameters that can be specified and their default values. For details about the parameters, see 8.8.2 Details of the parameters in the stream property file.

Table 8-6 Specifiable parameters and their default values (stream property file)

No.	Parameter name	Description	Default value	Permitted value range	Whether or not changeable during restart#1
1	stream.filterCondition	Specifies a conditional expression for using the timestamp adjustment function to filter tuples.	Value specified in the query group property file#2	--	Y
2	stream.filterMode	Specifies whether the timestamp adjustment function is to be used to filter tuples: unuse: Does not filter tuples. condition: Filters tuples.	Value specified in the query group property file#2	unuse or condition	Y
3	stream.freeInputQueueSizeThreshold	Specifies a threshold value (%) for the available size with respect to the maximum number of elements used in the input stream queue.	Value specified in the query group property file#2	Integer from 1 to 99	Y
4	stream.freeInputQueueSizeThresholdOutputMessage	Specifies whether a warning message is to be output to the SDP server's message log: true: Outputs warning message. false: Does not output warning message.	Value specified in the query group property file#2	true or false	Y
5	stream.maxKeepTupleCount	Specifies the maximum number of tuples that can be retained by the timestamp adjustment function.	Value specified in the query group property file#2	Integer from 1 to 1048576	Y
6	stream.streamName	Specifies the stream name.	None	--	Y
7	stream.timestampAccuracy	Specifies the time units and time adjustment range for the timestamp adjustment function.	Value specified in the query group property file#2	See 8.8.2(7) stream.timestampAccuracy={{sec|msec|usec},time-adjustment-range|unuse}.	Y
8	stream.timestampPosition	Specifies the name of the time-data column in tuples.	Value specified in the query group property file#2	See 8.8.2(8) stream.timestampPosition=time-data-column-name.	Y
9	tpl.backupFileCount	Specifies the maximum number of backup generations to be retained for the tuple log file.	Value specified in the query group property file#2	Integer from 0 to 10	Y
10	tpl.bufferCount	Specifies the number of tuple log buffers.	Value specified in the query group property file#2	Integer from 3 to 512	Y
11	tpl.bufferSize	Specifies the maximum size of a tuple log buffer (in kilobytes).	Value specified in the query group property file#2	Integer from 1 to 2048000	Y
12	tpl.fileCount	Specifies the maximum number of tuple log files.	Value specified in the query group property file#2	Integer from 3 to 512	Y
13	tpl.fileSize	Specifies the maximum size of a tuple log file (in megabytes).	Value specified in the query group property file#2	Integer from 1 to 2048	Y
14	tpl.outputLevel	Specifies the tuple log output level: 1: Outputs tuple logs for the tuples that are stored in the stream queue. 2: Outputs tuple logs for the tuples that are discarded due to out-of-sequence time. 3: Outputs tuple logs for tuples with levels 1 and 2.	Value specified in the query group property file#2	Integer from 1 to 3	Y
15	tpl.outputTrigger	Specifies the tuple log file output timing: BUFFER: Outputs tuple logs to a file when the buffer being used to collect the current tuple logs in the target stream becomes full. NONE: Does not output tuple logs to a file or perform buffering of tuple logs.	Value specified in the query group property file#2	BUFFER or NONE	Y
16	tpl.useOverwrite	Specifies whether the buffer is to be overwritten in the event of a full tuple log buffer: true: Overwrites the tuple log buffer. false: Does not overwrite the tuple log buffer.	Value specified in the query group property file#2	true or false	Y

Legend:

--: Not applicable

Y: Changeable

#1

Indicates whether (Y) or not (N) the parameter's setting can be changed when the query group is started by the sdpcqlstart command with the -reload option specified.

#2

If no value is specified in the query group property file, the default value for the query group property file is used.

• To change contents of a stream property file after you have registered a query group, use the following procedure:
  
  1. Delete the registered query group.
  2. Edit the property file.
  3. Re-register the query group.
  However, you do not need to delete the query group to change the values of the parameters for which Y is shown in the column Whether or not changeable during restart in the table in (5) Specifiable parameters; instead, you can follow the procedure below to change any of these parameter values:
  
  1. Terminate the query group.
  2. Edit the property file.
  3. Restart the query group with the sdpcqlstart command with the -reload option specified.