I enabled the "metrics.properties" to use FileContext, in which jvm
metrics values are written to a file as follows:
jvm.metrics: hostName= localhost, processName=MAP, sessionId=, gcCount=10,
gcTimeMillis=130, logError=0, logFatal=0, logInfo=21, logWarn=0,
threadsBlocked=0, threadsNew=0, threadsRunnable=2, threadsTerminated=0,
- Is this line for a single Map jvm ? as the processName=MAP. If so, why
doesn't it show job-id in sessionId ???
- Even though I ran maps and reducers tasks, I only got processName=MAP
/SHUFFLE, nothing for reducers why?