9.2. RegionServer Metrics
9.2.1. hbase.regionserver.blockCacheCount
Block cache item count in memory. This is the number of blocks of storefiles (HFiles) in the cache.
9.2.2. hbase.regionserver.blockCacheFree
Block cache memory available (bytes).
9.2.3. hbase.regionserver.blockCacheHitRatio
Block cache hit ratio (0 to 100). TODO: describe impact to ratio where read requests that have cacheBlocks=false
9.2.4. hbase.regionserver.blockCacheSize
Block cache size in memory (bytes)
9.2.5. hbase.regionserver.compactionQueueSize
Size of the compaction queue. This is the number of stores in the region that have been targeted for compaction.
9.2.6. hbase.regionserver.fsReadLatency_avg_time
Filesystem read latency (ms). This is the average time to read from HDFS.
9.2.7. hbase.regionserver.fsReadLatency_num_ops
TODO
9.2.8. hbase.regionserver.fsSyncLatency_avg_time
Filesystem sync latency (ms)
9.2.9. hbase.regionserver.fsSyncLatency_num_ops
TODO
9.2.10. hbase.regionserver.fsWriteLatency_avg_time
Filesystem write latency (ms)
9.2.11. hbase.regionserver.fsWriteLatency_num_ops
TODO
9.2.12. hbase.regionserver.memstoreSizeMB
Sum of all the memstore sizes in this RegionServer (MB)
9.2.13. hbase.regionserver.regions
Number of regions served by the RegionServer
9.2.14. hbase.regionserver.requests
Total number of read and write requests. Requests correspond to RegionServer RPC calls, thus a single Get will result in 1 request, but a Scan with caching set to 1000 will result in 1 request for each 'next' call (i.e., not each row). A bulk-load request will constitute 1 request per HFile.
9.2.15. hbase.regionserver.storeFileIndexSizeMB
Sum of all the storefile index sizes in this RegionServer (MB)
9.2.16. hbase.regionserver.stores
Number of stores open on the RegionServer. A store corresponds to a column family. For example, if a table (which contains the column family) has 3 regions on a RegionServer, there will be 3 stores open for that column family.
9.2.17. hbase.regionserver.storeFiles
Number of store filles open on the RegionServer. A store may have more than one storefile (HFile).