Title |
Metric |
Unit |
Description |
GC count |
YGC |
- |
Young GC count |
FGC |
- |
Full GC count |
GC time |
FGCT |
s |
Full GC time |
GCT |
s |
Garbage collection time |
YGCT |
s |
Young GC time |
Memory zone proportion |
S0 |
% |
Percentage of used Survivor 0 memory |
E |
% |
Percentage of used Eden memory |
CCS |
% |
Percentage of used compressed class space memory |
S1 |
% |
Percentage of used Survivor 1 memory |
O |
% |
Percentage of used Old memory |
M |
% |
Percentage of used Metaspace memory |
JVM logs |
LogFatal |
- |
Number of Fatal logs |
LogError |
- |
Number of Error logs |
LogWarn |
- |
Number of Warn logs |
LogInfo |
- |
Number of Info logs |
JVM memory |
MemNonHeapUsedM |
MB |
Non-heap memory size used by process |
MemNonHeapCommittedM |
MB |
Non-heap memory size committed to process |
MemHeapUsedM |
MB |
Heap memory size used by process |
MemHeapCommittedM |
MB |
Heap memory size committed to process |
MemHeapMaxM |
MB |
Maximum heap memory size available to process |
MemMaxM |
MB |
Maximum memory size available to process |
JVM threads |
ThreadsNew |
- |
Number of threads in NEW status |
ThreadsRunnable |
- |
Number of threads in RUNNABLE status |
ThreadsBlocked |
- |
Number of threads in BLOCKED status |
ThreadsWaiting |
- |
Number of threads in WAITING status |
ThreadsTimedWaiting |
- |
Number of threads in TIMED WAITING status |
ThreadsTerminated |
- |
Number of threads currently in TERMINATED status |
Regions |
regionCount |
- |
Number of regions |
Region localization |
percentFilesLocal |
% |
Percentage of HFiles on the local HDFS data node in the region |
Region replica localization |
percentFilesLocalSecondaryRegions |
% |
Percentage of HFiles on the local HDFS data node in the region replica |
RPC authentications |
authenticationFailures |
- |
Number of RPC authentication failures |
authenticationSuccesses |
- |
Number of RPC authentication successes |
RPC connections |
numOpenConnections |
- |
Number of RPC connections |
RPC exceptions |
FailedSanityCheckException |
- |
Number of FailedSanityCheckException exceptions |
NotServingRegionException |
- |
Number of NotServingRegionException exceptions |
OutOfOrderScannerNextException |
- |
Number of OutOfOrderScannerNextException exceptions |
RegionMovedException |
- |
Number of RegionMovedException exceptions |
RegionTooBusyException |
- |
Number of RegionTooBusyException exceptions |
UnknownScannerException |
- |
Number of UnknownScannerException exceptions |
RPC handlers |
numActiveHandler |
- |
Number of active RPC handlers |
numActiveWriteHandler |
- |
Number of active read RPC handlers |
numActiveReadHandler |
- |
Number of active write RPC handlers |
numActiveScanHandler |
- |
Number of active scan RPC handlers |
RPC queue requests |
numCallsInPriorityQueue |
- |
Number of requests in the priority queue |
numCallsInReplicationQueue |
- |
Number of RPC requests in the replication queue |
numCallsInPriorityQueue |
- |
Number of requests in the general queue |
numCallsInWriteQueue |
- |
Number of RPC calls in the write call queue |
numCallsInReadQueue |
- |
Number of RPC calls in the read call queue |
numCallsInScanQueue |
- |
Number of RPC calls in the scan call queue |
WAL files |
hlogFileCount |
- |
Number of WAL files |
WAL file size |
hlogFileSize |
Byte |
WAL file size |
MemStore size |
memStoreSize |
MB |
MemStore size |
Stores |
storeCount |
- |
Number of stores |
StoreFiles |
storeFileCount |
- |
Number of StoreFiles |
StoreFile size |
storeFileSize |
MB |
StoreFile size |
Disk write rate |
flushedCellsSize |
bytes/s |
Disk write rate |
Average latency |
Append_mean |
ms |
Average Append latency |
Replay_mean |
ms |
Average Replay latency |
Get_mean |
ms |
Average GET latency |
updatesBlockedTime |
ms |
Number of milliseconds updates have been blocked so the memstore can be flushed |
RegionServer disk writes |
FlushTime_num_ops |
- |
Number of MemStore flushes |
Requests in operation queue |
splitQueueLength |
- |
Length of the split queue |
compactionQueueLength |
- |
Length of the compaction queue |
flushQueueLength |
- |
Length of the region flush queue |
Replay operations |
Replay_num_ops |
- |
Number of Replay operations |
Slow operations |
slowAppendCount |
- |
Number of Append requests that took over 1s to complete |
slowDeleteCount |
- |
Number of Delete requests that took over 1s to complete |
slowGetCount |
- |
Number of Get requests that took over 1s to complete |
slowIncrementCount |
- |
Number of Increment requests that took over 1s to complete |
slowPutCount |
- |
Number of Put requests that took over 1s to complete |
Split request |
splitRequestCount |
- |
Number of split requested |
splitSuccessCount |
- |
Number of successfully executed splits |
Cache blocks |
blockCacheCount |
- |
Number of blocks in the block cache |
blockCacheHitCount |
- |
Number of block cache hits |
blockCacheMissCount |
- |
Number of block cache misses |
Cache read hit rate |
blockCacheExpressHitPercent |
% |
Cache read hit rate |
Memory size used by the cache block |
blockCacheSize |
Byte |
Memory size used by the cache block |
Index size |
staticBloomSize |
Byte |
Uncompressed size of static bloom filters |
staticIndexSize |
Byte |
Uncompressed size of static indexes |
storeFileIndexSize |
Byte |
Size of indexes in StoreFiles on disk |
Received bytes |
receivedBytes |
bytes/s |
Received bytes |
sentBytes |
bytes/s |
Sent bytes |
Read and write requests |
Total |
count/s |
Total number of requests. When there are scan requests, this value will be smaller than the sum of read and write requests |
Read |
count/s |
Number of read requests |
Write |
count/s |
Number of write requests |
Append_num_ops |
count/s |
Number of Append requests |
Mutate_num_ops |
count/s |
Number of Mutate requests |
Delete_num_ops |
count/s |
Number of Delete requests |
Increment_num_ops |
count/s |
Number of Increment requests |
Get_num_ops |
count/s |
Number of Get requests |
Put_num_ops |
count/s |
Number of Put requests |
ScanTime_num_ops |
count/s |
Scan requests (time) |
ScanSize_num_ops |
count/s |
Scan requests (size) |
Mutations |
mutationsWithoutWALCount |
- |
Number of mutations |
Mutation size |
mutationsWithoutWALSize |
Byte |
Mutation size |
Process start time |
regionServerStartTime |
s |
Process start time |
Log sync |
source.sizeOfLogQueue |
- |
Total length of synced logs |
Sync duration |
source.ageOfLastShippedOp |
ms |
Sync duration |
Requests |
ReadRequestCount |
count/s |
Read requests/s |
WriteRequestCount |
count/s |
Write requests/s |
Requests |
Read |
count/s |
Read requests/s |
Write |
count/s |
Write requests/s |
Store size |
memstoreSize |
Byte |
MemStore size |
storeFileSize |
Byte |
StoreFile size |
Table-level request latency |
getTime_99th_percentile |
ms |
99th percentile of request processing latency |
scanTime_99th_percentile |
ms |
99th percentile of request processing latency |
putTime_99th_percentile |
ms |
99th percentile of request processing latency |
incrementTime_99th_percentile |
ms |
99th percentile of request processing latency |
appendTime_99th_percentile |
ms |
99th percentile of request processing latency |
deleteTime_99th_percentile |
ms |
99th percentile of request processing latency |
Request processing latency |
99th_percentile |
ms |
99th percentile of request processing latency |
99.9th_percentile |
ms |
99.9% request processing latency |
Request queueing latency |
99th_percentile |
ms |
99th percentile of request queueing latency |
99.9th_percentile |
ms |
99.9% request queueing latency |
Scan size |
max |
bytes |
Maximum scan size |
mean |
bytes |
Average scan size |
min |
bytes |
Minimum scan size |
Scan time |
max |
s |
Maximum scan time |
mean |
s |
Average scan time |
min |
s |
Minimum scan time |
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