MapReduce logs support various levels. You can configure
the log levels for the MapReduce service and tasks.
Note: To configure the log level for debugging EGO components (such as the SD and SIM) and SOAM components (such as the PEM and LIM), use the egosh debug and the soamlog commands, respectively.
You can set log levels to any of the following values:
| Level |
Description |
| DEBUG |
Logs all debug-level and informational messages. |
| INFO |
Logs all informational messages and more serious messages. This is the default log level. |
| WARN |
Logs only those messages that are warnings or more serious messages. This is the default level of debug information. |
| ERROR |
Logs only those messages that indicate error conditions or more serious messages. |
| FATAL |
Logs only those messages in which the system is unusable. |
To modify the level of the log printed to the console, change the value of the
log4j.rootLogger property in the log configuration file:
| Component |
Log configuration file |
| MapReduce service |
$PMR_HOME/conf/pmr-env.sh |
| MapReduce task |
$PMR_HOME/conf/pmr.properties |
| MapReduce API |
$PMR_HOME/conf/pmr.properties |
| MapReduce client |
$PMR_HOME/conf/pmr.properties |
| Shuffle daemon |
$PMR_HOME/conf/mrss.log4j.properties |