Mark Curtis created CASSANDRA-12226:
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Summary: Nodetool tpstats output could benefit from "events since"
information
Key: CASSANDRA-12226
URL: https://issues.apache.org/jira/browse/CASSANDRA-12226
Project: Cassandra
Issue Type: Improvement
Components: Tools
Reporter: Mark Curtis
Priority: Minor
The output of tools like {{nodetool tpstats}} are very useful for seeing
historical counters of things like dropped mutations etc.
What would be very useful (if possible of course) is something above these to
say "since <x>" to help the user understand how long these stats apply and when
we started collecting them.
This might extend to other outputs like histograms, even if these are more like
"since you last run this" it might still be useful.
Here's an example:
{code}
Pool Name Active Pending Completed Blocked All
time blocked
CounterMutationStage 0 0 0 0
0
ReadStage 0 0 111284390 0
0
RequestResponseStage 0 0 297011175 0
0
MutationStage 0 0 134532012 0
0
ReadRepairStage 0 0 742114 0
0
GossipStage 0 0 5639150 0
0
CacheCleanupExecutor 0 0 0 0
0
MigrationStage 0 0 315 0
0
ValidationExecutor 0 0 482844 0
0
Sampler 0 0 0 0
0
MemtableReclaimMemory 0 0 164619 0
0
InternalResponseStage 0 0 792376 0
0
AntiEntropyStage 0 0 5402052 0
0
MiscStage 0 0 1197 0
0
CommitLogArchiver 0 0 0 0
0
MemtableFlushWriter 0 0 164564 0
0
PendingRangeCalculator 0 0 70 0
0
MemtablePostFlush 0 0 811892 0
0
CompactionExecutor 7 11 3250908 0
0
AntiEntropySessions 4 218 142144 0
0
HintedHandoff 2 7 602 0
0
Native-Transport-Requests 0 0 97372556 0
34
Dropped messages since 2016-07-18 01:00:04
Message type Dropped
RANGE_SLICE 0
READ_REPAIR 0
PAGED_RANGE 0
BINARY 0
READ 0
MUTATION 0
_TRACE 179705
REQUEST_RESPONSE 0
COUNTER_MUTATION 0
{code}
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