Sorry this took so long, but Mikael you are absolutely right that some of these metrics are non-sensible in name. I created a ticket: https://issues.apache.org/jira/browse/HBASE-5301
The "flushSize", and "flushTime" ones (flushSize_avg_time, flushSize_num_ops, flushTime_avg_time, flushTime_num_ops) would be better off being treated as "flush_avg_time", "flush_num_ops", and "flushSize_avg". I updated the metrics where I could in another ticket. On 11/22/11 6:37 PM, "Doug Meil" <doug.m...@explorysmedical.com> wrote: > >Thanks Mikael for the review. I'll put it in the docs queue. > > > > >On 11/22/11 5:23 PM, "Mikael Sitruk" <mikael.sit...@gmail.com> wrote: > >>Hi >> >>I have enabled metrics on Hbase cluster (0.90.1), and mapped the metrics >>to >>3 categories (missing, Present but not documented/Incomplete >>documentation,Ok) according to their status in the book ( >>http://hbase.apache.org/book.html#hbase_metrics). Is it possible to >>udpate >>the book accordingly? >>It seems also that rpc metrics are not documented at all. >> >>And now some questions on the metrics: >>I can see some metrics present a num_ops and avg_time suffix (like rpc) >>but >>it seems that for certain metrics is it totally unclear (to me at least) >>or >>their name is missleading - for example what >>means compactionTime_avg_time/compactionTime_num_ops? or >>flushSize_avg_time >>and flushSize_num_ops? I mean I would have understood compaction_avg_time >>and flushSize or flush_avg_time. >> >>Also how can we know the unit of measure of metrics (beside >>memstoreSizeMB >>and storefileIndexSizeMB that explicitly tell the UOM)? >> >>Missing: >> >>blockCacheEvictedCount >>blockCacheHitCachingRatio >>blockCacheHitCount >>blockCacheMissCount >>compactionSize_avg_time >>compactionSize_num_ops >>compactionTime_avg_time >>compactionTime_num_ops >>flushQueueSize >>flushSize_avg_time >>flushSize_num_ops >>flushTime_avg_time >>flushTime_num_ops >> >> >> >>Present but not documented/Incomplete documentation: >> >>blockCacheHitRatio >>fsReadLatency_num_ops >>fsSyncLatency_num_ops >>fsWriteLatency_num_ops >> >> >>Ok: >> >>blockCacheCount >>blockCacheFree >>blockCacheSize >>compactionQueueSize >>fsReadLatency_avg_time >>fsSyncLatency_avg_time >>fsWriteLatency_avg_time >>regions >>requests >>memstoreSizeMB >>storefiles >>stores >>storefileIndexSizeMB >> >> >> >>Regards, >>Mikael.S > > >
