HBase - Tables
These metrics reflect data on the table level. The HBase - Tables dashboards and data help you compare load distribution and resource usage among tables in a cluster at different points of time.
| Row | Metrics |
Description |
|---|---|---|
|
NUM REGIONS/STORES |
Num Regions |
Number of regions for the table(s). |
|
Num Stores |
Number of stores for the table(s). | |
|
TABLE SIZE |
Table Size |
Total size of the data (store files and MemStore) for the table(s). |
|
Average Region Size |
Average size of the region for the table(s). Average Region Size is calculated from average of average region sizes reported by each RegionServer (may not be the true average). | |
|
MEMSTORE SIZE | MemStore Size |
Total MemStore size of the table(s). |
STORE FILES |
Store File Size |
Total size of the store files (data files) for the table(s). |
|
Num Store Files |
Total number of store files for the table(s). | |
|
STORE FILE AGE |
Max Store File Age |
Maximum age of store files for the table(s). As compactions rewrite data, store files are also rewritten. Max Store File Age is calculated from the maximum of all maximum store file ages reported by each RegionServer. |
|
Min Store File Age |
Minimum age of store files for the table(s). As compactions rewrite data, store files are also rewritten. Min Store File Age is calculated from the minimum of all minimum store file ages reported by each RegionServer. | |
|
Average Store File Age |
Average age of store files for the table(s). As compactions rewrite data, store files are also rewritten. Average Store File Age is calculated from the average of average store file ages reported by each RegionServer. | |
|
Num Reference Files - Total on All |
Total number of reference files for the table(s). | |
|
NUM TOTAL REQUESTS |
Num Total Requests /s on Tables |
Total number of requests (both read and write) per second for the table(s). |
|
NUM READ REQUESTS |
Num Read Requests /s |
Total number of read requests per second for the table(s). |
|
NUM WRITE REQUESTS |
Num Write Requests /s |
Total number of write requests per second for the table(s). |
|
NUM FLUSHES |
Num Flushes /s |
Total number of flushes per second for the table(s). |
|
FLUSHED BYTES |
Flushed MemStore Bytes |
Total number of flushed MemStore bytes for the table(s). |
|
Flushed Output Bytes | Total number of flushed output bytes for the table(s). | |
|
FLUSH TIME HISTOGRAM |
Flush Time Mean |
Mean latency for Flush operation for the table(s). |
|
Flush Time Median | Median latency for Flush operation for the table(s). | |
|
Flush Time 95th Percentile |
95th percentile latency for Flush operation for the table(s). | |
|
Flush Time Max |
Maximum latency for Flush operation for the table(s). | |
|
FLUSH MEMSTORE SIZE HISTOGRAM |
Flush MemStore Size Mean |
Mean size of the MemStore for Flush operation for the table(s). |
|
Flush MemStore Size Median | Median size of the MemStore for Flush operation for the table(s). | |
|
Flush Output Size 95th Percentile |
95th percentile size of the MemStore for Flush operation for the table(s). | |
|
Flush MemStore Size Max |
Max size of the MemStore for Flush operation for the table(s). | |
|
FLUSH OUTPUT SIZE HISTOGRAM |
Flush Output Size Mean |
Mean size of the output file for Flush operation for the table(s). |
|
Flush Output Size Median | Median size of the output file for Flush operation for the table(s). | |
|
Flush Output Size 95th Percentile |
95th percentile size of the output file for Flush operation for the table(s). | |
|
Flush Output Size Max |
Max size of the output file for Flush operation for the table(s). |