Demuxer for Chukwa 0.4 is a mapreduce job acting as ETL process to convert the data into semi structure format for further processing. For Chukwa trunk with HBase, demux is running as part of collector for ETL. Hence, there is no need to run demux process.
regards, Eric On Oct 25, 2011, at 3:49 PM, SALAMI Patrick wrote: > Also, while we are chatting, I was hoping to understand the role of the > demuxer. I am assuming that HICC pulls all of its data from HBase. If using > HBase, is it still necessary to run the demuxer? I didn't see any mention of > it in the latest quick start guide. > > Thanks! > > Patrick > > -----Original Message----- > From: Eric Yang [mailto:[email protected]] On Behalf Of Eric Yang > Sent: Tuesday, October 25, 2011 2:45 PM > To: [email protected] > Subject: Re: Chukwa trunk does not write to HBase > > Hadoop trunk will require a different configuration than the one described in > the Quick_Start guide. > > 1. Apply this patch: HADOOP-7436, and rebuild hadoop. > 2. Copy hadoop-metrics2.properties enclosed in this message to HADOOP_CONF_DIR > > Restart hadoop. You might need to match the HBase table schema with the > metrics emitted by Hadoop metrics 2 framework. > Hope this helps. > > > This message contains confidential information and is intended only for the > individual(s) named. If you are not the named addressee you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately by e-mail if you have received this e-mail by mistake and delete > this e-mail from your system.
