The parameters in the sections below are set at the system level and thus do not
apply to any specific component.
General
| Config |
Meaning |
Default |
heron.check.tmaster.location.interval.sec |
The interval, in seconds, after which to check if the topology master location has been fetched or not |
120 |
heron.metrics.export.interval |
The interval, in seconds, at which components export metrics to the topology’s Metrics Manager |
|
Logging
| Config |
Meaning |
Default |
heron.logging.directory |
The relative path to the logging directory |
log-files |
heron.logging.maximum.size.mb |
The maximum log file size (in megabytes) |
100 |
heron.logging.maximum.files |
The maximum number of log files |
5 |
heron.logging.prune.interval.sec |
The time interval, in seconds, at which Heron prunes log files |
300 |
heron.logging.flush.interval.sec |
The time interval, in seconds, at which Heron flushes log files |
10 |
heron.logging.err.threshold |
The threshold level to log error |
3 |