In case anybody wants estimates of medians, Mahout has some easily
extractable code to compute medians and first and third quartiles without
keeping lots of data around. As a side effect, it computes averages and
standard deviations as well.
I don't think that such a small thing as this warrants
Tim:
You should get a copy of Lars' book. Then you'd know what the below
are (smile).
Quoting:
"A commonly used metric in HBase is called time varying rate, which
not only tracks the number of events, but also how long each event
took to complete. A TVR exposes four values. [Below] shows the
I am collecting hbase stats from jmx.
Here's an example of the compaction stats from one of the region servers...
compactionQueueSize 0
compactionSizeAvgTime 19349729
compactionSizeMaxTime 566512933
compactionSizeMinTime 0
compactionSizeNumOps8
compactionTimeAvgTime 83
compactionT
